Hard ware of the Mobile

Fuse:
There are 2 types of fuse in mobile cicruit.

1. Normal fuse: to control the full voltage of the circuit is the main work of the normal fuse

&

2.thermal fuse:

Mobile Software basic things

To change the IME number by software:

First install the easy phone software then clik on the software,
Nokia>Double click>(DCT4)(DCT3) for black & white display.
DCT4 Unlock>Repair>com no slect >read phone import. If mobile lock then will show 4 boxes sequentially.and will be shown close in every boxes> click the open.

The locks of mobile: there are 3 types of mobile locks.
1. SIM locks/country Locks/SP Locks.
2. Phone Lock/User Lock.
3. PIN code lock/PUK code Lock.

SIM Locks/Country Locks/Sp Locks: Generraly Mobile phone companies locks the sim>(if any SIM stolesn, other wise claimed from the owner of the sim company.)and also we can take another sim its the real owner of the sim btu the first one will be locked if replaced the sim. Some times SIM Shows that country lock becasue of the mobile set is bringed from antoehr country, and nto well designed for the every country then it needs to be flash by some software like Om files Etc.and generay its designed for some specific country.SP lock(Service Provider Lock) Generally mobile phone companies does this when tehy sees soem one trying to make the balance code wronly more than the expected tiems then tehy locks this for som ehours that is SP lock.

Phone Lock:
we can lock our phone by our wish in the system of mobile options.

Pin/Puk Lock:some times using wrongly the mobiles phone that can be got in PIN/PUC lock. that tiem there are PIN and/PUK number with the SIM crds with soem papers use thsoe and put those in the cell phone. then it will be ok.

Cell-phone Network Technologies: 3G

3G technology is the latest in mobile communications. 3G stands for "third generation" -- this makes analog cellular technology generation one and digital/PCS generation two. 3G technology is intended for the true multimedia cell phone -- typically called smartphones -- and features increased bandwidth and transfer rates to accommodate Web-based applications and phone-based audio and video files.

Sony Ericsson V800 3G phone

3G comprises several cellular access technologies. The three most common ones as of 2005 are:

CDMA2000 - based on 2G Code Division Multiple Access (see Cellular Access Technologies)
WCDMA (UMTS) - Wideband Code Division Multiple Access
TD-SCDMA - Time-division Synchronous Code-division Multiple Access

3G networks have potential transfer speeds of up to 3 Mbps (about 15 seconds to download a 3-minute MP3 song). For comparison, the fastest 2G phones can achieve up to 144Kbps (about 8 minutes to download a 3-minute song). 3G's high data rates are ideal for downloading information from the Internet and sending and receiving large, multimedia files. 3G phones are like mini-laptops and can accommodate broadband applications like video conferencing, receiving streaming video from the Web, sending and receiving faxes and instantly downloading e-mail messages with attachments.

Of course, none of this would be possible without those soaring towers that carry cell-phone signals from phone to phone.

CDMA

CDMA

takes an entirely different approach from TDMA. CDMA, after digitizing data, spreads it out over the entire available bandwidth. Multiple calls are overlaid on each other on the channel, with each assigned a unique sequence code. CDMA is a form of spread spectrum, which simply means that data is sent in small pieces over a number of the discrete frequencies available for use at any time in the specified range

In CDMA, each phone's data has a unique code.

2G is a cell phone network protocol. Click here to learn about network protocols for Smartphones.

All of the users transmit in the same wide-band chunk of spectrum. Each user's signal is spread over the entire bandwidth by a unique spreading code. At the receiver, that same unique code is used to recover the signal. Because CDMA systems need to put an accurate time-stamp on each piece of a signal, it references the GPS system for this information.

Between eight and 10 separate calls can be carried in the same channel space as one analog AMPS call. CDMA technology is the basis for Interim Standard 95 (IS-95) and operates in both the 800-MHz and 1900-MHz frequency bands.Ideally, TDMA and CDMA are transparent to each other. In practice, high-power CDMA signals raise the noise floor for TDMA receivers, and high-power TDMA signals can cause overloading and jamming of CDMA receivers.2G is a cell phone network protocol. Click here to learn about network protocols for Smartphones.

GSM

TDM­A is also used as the access technology for Global System for Mobile communications (GSM).

However, GSM implements TDMA in a somewhat different and incompatible way from IS-136. Think of GSM and IS-136 as two different operating systems that work on the same processor, like Windows and Linux both working on an Intel Pentium III. GSM systems use encryption to make phone calls more secure. GSM operates in the 900-MHz and 1800-MHz bands in Europe and Asia and in the 850-MHz and 1900-MHz (sometimes referred to as 1.9-GHz) band in the United States. It is used in digital cellular and PCS-based systems. GSM is also the basis for Integrated Digital Enhanced Network (IDEN), a popular system introduced by Motorola and used by Nextel.

GSM is the international standard in Europe, Australia and much of Asia and Africa. In covered areas, cell-phone users can buy one phone that will work anywhere where the standard is supported. To connect to the specific service providers in these different countries, GSM users simply switch subscriber identification module (SIM) cards. SIM cards are small removable disks that slip in and out of GSM cell phones. They store all the connection data and identification numbers you need to access a particular wireless service provider. ­

Unfortunately, the 850MHz/1900-MHz GSM phones used in the United States are not compatible with the international system. If you live in the United States and need to have cell-phone access when you're overseas, you can either buy a tri-band or quad-band GSM phone and use it both at home and when traveling or just buy a GSM 900MHz/1800MHz cell phone for traveling. You can get 900MHz/1800MHz GSM phones from Planet Omni, an online electronics firm based in California. They offer a wide selection of Nokia, Motorola and Ericsson GSM phones. They don't sell international SIM cards, however. You can pick up prepaid SIM cards for a wide range of countries at Telestial.com.

TDMA

TDMA is the access method used by the Electronics Industry Alliance and the Telecommunications Industry Association for Interim Standard 54 (IS-54) and Interim Standard 136 (IS-136).

Using TDMA, a narrow band that is 30 kHz wide and 6.7 milliseconds long is split time-wise into three time slots.

Narrow band means "channels" in the traditional sense. Each conversation gets the radio for one-third of the time.

This is possible because voice data that has been converted to digital information is compressed so that it takes up significantly less transmission space.

Therefore, TDMA has three times the capacity of an analog system using the same number of channels. TDMA systems operate in either the 800-MHz (IS-54) or 1900-MHz (IS-136) frequency bands.

TDMA splits a frequency into time slots.

Cell Phone Network Technologies:

There are three common technologies used by 2G cell-phone networks for transmitting information (we'll discuss 3G technologies in the 3G section):
Frequency division multiple access (FDMA)
Time division multiple access (TDMA)
Code division multiple access (CDMA)

Although these technologies sound very intimidating, you can get a good sense of how they work just by breaking down the title of each one.
The first word tells you what the access method is. The second word, division, lets you know that it splits calls based on that access method.
FDMA puts each call on a separate frequency.

TDMA assigns each call a certain portion of time on a designated frequency.

CDMA gives a unique code to each call and spreads it over the available frequencies. The last part of each name is multiple access. This simply means that more than one user can utilize each cell.
FDMA separates the spectrum into distinct voice channels by splitting it into uniform chunks of bandwidth. To better understand FDMA, think of radio stations: Each station sends its signal at a different frequency within the available band. FDMA is used mainly for analog transmission. While it is certainly capable of carrying digital information, FDMA is not considered to be an efficient method for

In FDMA, each phone uses a different frequency.

The cell-phone speaker, microphone and battery backup

Cell phones have such tiny speakers and microphones that it is incredible how well most of them reproduce sound. As you can see in the picture above, the speaker is about the size of a dime and the microphone is no larger than the watch battery beside it.

Speaking of the watch battery, this is used by the cell phone's internal clock chip.

The microprocessor

The microprocessor handles all of the housekeeping chores for the keyboard and display, deals with command and control signaling with the base station and also coordinates the rest of the functions on the board.The ROM and Flash memory chips provide storage for the phone's operating system and customizable features, such as the phone directory.

The radio frequency (RF) and power section handles power management and recharging, and also deals with the hundreds of FM channels. Finally, the RF amplifiers handle signals traveling to and from the antenna.

The display has grown considerably in size as the number of features in cell phones have increased. Most current phones offer built-in phone directories, calculators and games. And many of the phones incorporate some type of PDA or Web browser

The Flash memory card on the circuit board

The back of the circuit board

The back of the circuit board
In the photos above, you see several computer chips. Let's talk about what some of the individual chips do. The analog-to-digital and digital-to-analog conversion chips translate the outgoing audio signal from analog to digital and the incoming signal from digital back to analog. You can learn more about A-to-D and D-to-A conversion and its importance to digital audio in How Compact Discs Work. The digital signal processor (DSP) is a highly customized processor designed to perform signal-manipulation calculations at high speed. ­
The microprocessor handles all of the housekeeping chores for the keyboard and display, deals with command and control signaling with the base station and also coordinates the rest of the functions on the board.

How mobile/cell phones works

Inside a Digital Cell Phone
On a "complexity per cubic inch" scale, cell phones are some of the most intricate devices people use on a daily basis. Modern digital cell phones can process millions of calculations per second in order to compress and decompress the voice stream.

The parts of a cell phone
If you take a basic digital cell phone apart, you find that it contains just a few individual parts:
An amazing circuit board containing the brains of the phone
An antenna
A liquid crystal display (LCD)
A keyboard (not unlike the one you find in a TV remote control)
A microphone
A speaker
A battery
The circuit board is the heart of the system. Here is one from a typical Nokia digital Phone

http://www.nokia.com.bd/home

Worlds GSM Network

World GSM Network

Afghanistan (GSM 900/1800)Albania (GSM 900/1800)Algeria (GSM 900/1800)American Samoa (GSM 1900)Andorra (GSM 900)Angola (GSM 900)Antigua & Barbuda (GSM 1900)Argentina (GSM 900/1900)Armenia (GSM 900)Aruba (GSM 900/1800/1900)Australia (GSM 900/1800/3G)Azerbaijan (GSM 900)Bahrain (GSM 900)Bangladesh (GSM 900)Belarus (GSM 900)Belgium (GSM 900/1800)Belize (GSM 1900)Benin (GSM 900)Bermuda (GSM 1900)Bolivia (GSM 1900)Bosnia Herzegovina (GSM 900)Botswana (GSM 900)Brazil(GSM 1800)Brunei Darussalam (GSM 900)Bulgaria (GSM 900/1800)Burkina Faso (GSM 900)Burundi (GSM 900)Cambodia (GSM 900)Cameroon (GSM 900)Canada (GSM 850/1900)Cape Verde (GSM 900)Central African Republic (GSM 900)Chad (GSM 900)Chile (GSM 1900)China (GSM 900)Congo (GSM 900)Congo (GSM 900/1800)Costa Rica (GSM 1800/3G)Cote d'Ivoire (GSM 900)Croatia (GSM 900)Cuba (GSM 900)Cyprus (GSM 900)Malta (GSM 900/1800)Czech Republic (GSM 900/1800)Denmark (GSM 900/1800)Dominican Republic (GSM 1900)Egypt (GSM 900)El Salvador (GSM 900/1900)Equatorial Guinea (GSM 900/1800)Estonia (GSM 900/1800)Ethiopia (GSM 900)Faroe Islands (GSM 900)Fiji (GSM 900)Finland (GSM 900/1800)France (GSM 900/1800)French Polynesia (GSM 900)French West Indies (GSM 900/1800)Gabon, Republic of (GSM 900)Gambia (GSM 900)Georgia (GSM 900/1800)Germany (GSM 900/1800/3G)
Ghana (GSM 900)Gibraltar (GSM 900)Greece (GSM 900/1800)Greenland (GSM 900)Grenada (GSM 900/1900)Guam (USA) (GSM 1900)Guernsey (GSM 900)Guinea (GSM 900)Hong Kong (GSM 900/1800)Hungary (GSM 900/1800)Iceland (GSM 900/1800)India (GSM 900/1800)Indonesia (GSM 900/1800)Iran (GSM 900)Ireland (GSM 900/1800)Isle of Man (GSM 900/1800)Israel (GSM 900/1800/3G)Italy (GSM 900/1800/3G)Jamaica (GSM 900)Japan(GSM 3G)Jersey (GSM 900)Jordan (GSM 900)Kazakhstan (GSM 900)Kenya (GSM 900)Kuwait (GSM 900/1800)Kyrgyz Republic (GSM 900)Lao (GSM 900)Latvia (GSM 900/1800)Lebanon (GSM 900/1800)Lesoth (GSM 900)Liberia Sudan (GSM 900)Libya (GSM 900)Liechtenstein (GSM 900/1800)Lithuania (GSM 900/1800)Luxembourg (GSM 900/1800)Macau (GSM 900/1800)Macedonia (GSM 900)Madagascar (GSM 900/1800)Malawi (GSM 900)Malaysia (GSM 900/1800)Maldives (GSM 900/1800)Mali (GSM 900)Malta (GSM 900/1800)Mauritania (GSM 900)Mauritius (GSM 900)Mexico (GSM 1900)Micronesia (GSM 900)Republic (GSM 900)Monaco (GSM 900)Mongolia (GSM 900/1800)Morocco (GSM 900)Mozambique (GSM 900/1800)Myanmar (GSM 900)Namibia (GSM 900/1800)Nepal (GSM 900)Netherlands (GSM 9001800)Netherlands Antilles (GSM 900/1900)New Caledonia (GSM 900)New Zealand (GSM 900)Niger (GSM 900)Nigeria (GSM 900/1800)
Norway (GSM 900/1800)Oman, Sultanate of (GSM 900)Pakistan (GSM 900)Palestinian Authority (GSM 900)Panama, Republic of (GSM 900)Papua New Guinea (GSM 900)Paraguay (GSM 1900)Peru (GSM 1900)Philippines (GSM 900/1800)Poland (GSM 900/1800)Portugal (GSM 900/1800/3G)Qatar (GSM 900)Reunion (La) (GSM 900/1800)Romania (GSM 900/1800)Russia (GSM 900/1800)Rwanda (GSM 900)Sao Tome and Principe (GSM 900)Satellite(GSM Satellite)Saudi Arabia (GSM 900)Senegal (GSM 900)Seychelles (GSM 900)Sierra Leone (GSM 900)Singapore (GSM 900/1800)Slovak Republic (GSM 900/1800)Slovenia (GSM 900/1800)Somalia (GSM 900/1800)South Africa (GSM 900/1800)South Korea (GSM 3G)Spain (GSM 900/1800)Sri Lanka (GSM 900)Sudan (GSM 900)Suriname (GSM 900)Swaziland (GSM 900)Sweden (GSM 900/1800/3G)Switzerland (GSM 900/1800)Syria (GSM 900/1800)Taiwan (GSM 900/1800)Tajikistan (GSM 900/1800)Tanzania (GSM 900/1800/400)Thailand (GSM 900/1800/1900/3G)Togo (GSM 900)Tonga (GSM 900)Trinidad and Tobago (GSM 1800)Tunisia (GSM 900)Turkey (GSM 900/1800)Turkmenistan (GSM 900)Uganda (GSM 900/1800)Ukraine (GSM 900/1800)United Arab Emirates (GSM 900)United Kingdom (GSM 900/1800/3G)USA (GSM 850/1900)Uzbekistan (GSM 900/1800)Vanuatu (GSM 900)Venezuela (GSM 900/1800)Vietnam (GSM 900)Virgin Islands (USA) (GSM 900/1800)Yemen (GSM 900)Yugoslavia (GSM 900/1800)Zambia (GSM 900)Zimbabwe (GSM 900)

Quartz,SIM,Smart Phone,SMS,TDMA,UMTS,Unicode

Quartz
Code-name for a tablet-like, quarter-VGA portrait screen size, pen-based, reference design.
Reference design
User interface designs for Symbian OS delivered to Symbian licensees
Service provider

A company that provides mobile phone users with services and subscriptions to mobile phone networks.
SIM

Subscriber Identity Module. The SIM card is the smart card inserted inside all GSM phones. It identifies the user account to the network, handles authentication and provides data storage for basic user data and network information. It may also contain some applications that run on a compatible phone (SIM Application Toolkit).
Smartphone

A generic name for voice centric mobile phones with information capability. The Ericsson R380 Smartphone is an example of such a Symbian OS phone.
SMS

Short Message Service: available on digital GSM networks allowing text messages of up to 160 characters to be sent and received via the network operator's message center to your mobile phone, or from the Internet, using a so-called "SMS gateway" website. If the phone is powered off or out of range, messages are stored in the network and are delivered at the next opportunity.
Symbian Connect

The PC-based Symbian Connect is a system for data synchronization, file management, printing via PC, application installation from a PC, and other utility functions allowing Symbian OS phones to integrate effectively with PC and server-based data.
Symbian Developer Network

The developers' support network for Symbian OS, where you will find all the resources to enable you to develop world-class applications for Symbian OS phones.
Symbian OS

Symbian's advanced open standard operating system for data enabled mobile phones. It includes a multi-tasking multithreaded core, a user interface framework, data services enablers, application engines and integrated PIM functionality and wireless communications.
SyncML

Synchronization Markup Language, an industry-wide effort to create a single, common data synchronization protocol optimized for wireless networks. SyncML's goal is to have networked data that support synchronization with any mobile device, and mobile devices that support synchronization with any networked data. The SyncML structured data layer will use XML wherever appropriate. SyncML is intended to work on transport protocols as diverse as HTTP, WSP (part of WAP) and OBEX, and with data formats ranging from personal data (e.g. vCard & vCalendar) to relational data and XML documents. The SyncML consortium was set up by IBM, Nokia and Psion among others. Symbian is a sponsor of the SyncML consortium.
TACS

Total Access Communication System: a British 1G analog mobile telephone standard based on the US AMPS system. It was later adopted in other countries including Hong-Kong and Japan.
TDMA

1. Time Division Multiple Access: a digital wireless telephony transmission technique. TDMA allocates each user a different time slot on a given frequency. GSM, D-AMPS, PDC and DECT use TDMA in one form or another. 2. A name generally used for D-AMPS. TDMA networks are operated in the US, Latin America, New Zealand, parts of Russia and Asia Pacific.
UMTS

Universal Mobile Telecommunications Service, part of the IMT-2000 initiative, is a 3G standard supporting a theoretical data throughput of up to 2 Mbps. First trials started in 2001. It should be rolled out in most of the world by 2005.
Unicode A 16-bit character encoding scheme allowing characters from Western European, Eastern European, Cyrillic, Greek, Arabic, Hebrew, Chinese, Japanese, Korean, Thai, Urdu, Hindi and all other major world languages, living and dead, to be encoded in a single character set. The Unicode

specification also includes standard compression schemes and a wide range of typesetting information required for worldwide locale support. Symbian OS fully implements Unicode.
vCalendar

Defines a transport- and platform-independent format for exchanging calendar and schedule information so that any vCalendar-compliant application can send or receive calendaring and scheduling information to or from any other vCalendar-compliant application. For instance, users with mobile phones running vCalendar-aware applications can schedule meetings automatically over an infrared link or via sending an SMS.
vCard

Standard defining the format of an electronic business card. All devices supporting vCard can exchange information such as phone numbers and addresses. For instance a user with a vCard-aware phonebook application on a handheld computer can easily transfer names and phone numbers to a vCard-aware mobile phone.
VGA

Video Graphics Array: “standard” screen size of 640 by 480 pixels.
WCDMA

Wide-band CDMA: a CDMA protocol originated by NTT DoCoMo and now adopted for third-generation use by ETSI in Europe. WCDMA supports very high-speed multimedia services such as full-motion video, Internet access and video conferencing.
WAP

1. Wireless Application Protocol: a set of communication protocol standards to make accessing online services from a mobile phone simple. 2. WAP was conceived by four companies: Ericsson, Motorola, Nokia, and Unwired Planet (today called Phone.com). The WAP Forum is an industry association with over 200 members. Symbian is a full member of the WAP Forum.

OS,OPL,PCN,PDC,Personal Java

OS

Operating System: historically, the minimal set of software needed to manage a device's hardware capability and share it between application programs. Practically, "OS" is now used to mean all software including kernel, device drivers, comms, graphics, data management, GUI framework, system shell application, and utility applications. This would define Windows, Palm OS and MacOS as operating systems. Symbian provides an operating system – Symbian OS – tailored for data-enabled mobile phones.
OPL

A BASIC-like programming language, for rapid application development, used on Symbian OS.
Packet-switching Technique whereby the information (voice or data) to be sent is broken up into packets, of at most a few KB each, which are then routed by the network between different destinations based on addressing data within each packet. Use of network resources is optimized, as the resources are needed only during the handling of each packet. This is an ideal model for ad hoc data communication, and works well also for voice, video and other streamed data. Mobile phones with packet-switched communication appear to be "always connected" to the data network, whereas in the case of circuit-switched connections, setup time takes around 30 seconds to connect from a mobile phone to an ISP. Use of packet-switched network can be charged according to the volume of data transferred and not to any notion of time spent online.
PCN

Personal Communications Network: another name for GSM 1800 (it is also known as DCS 1800). It is used in Europe and Asia Pacific.
PCS Personal Communications Service: an American generic term for a mass-market mobile phone service, emphasizing personal communication, independent of the technology used to provide it. PCS includes such digital cellular technologies as GSM 1900, CDMA and TDMA IS-136.
PDC

Personal Digital Cellular: the 2G TDMA-based protocols used in Japan, owned by NTT DoCoMo. PDC services operate in the 800 and 1500 MHz bands.
PersonalJava

A Java platform optimized for the requirements and constraints of mobile devices.
Platform A set of technology, which acts as a foundation for real-world applications, or higher-level platforms. Symbian OS includes C++ APIs, a leading Java implementation, an application suite and integration with wireless and other communications protocols.
Polyphonic Ringtones

Todays poly ringtones are almost as good as the original records, the quality gets better all the time due to continuous improvement in mobile phone audio technology. Most modern mobile phones with play 16 track tunes. Whilst the early mobile phones that would only play monophonic sounds are still around it is only a matter of time before all mobile phone manufacturers produce handsets that play polyphonic tones. Polytones sound good and most hits are available to be transmitted in stereo to give up to 40 different notes playing at a time.

Java Phone,JTAPI,KERNEL,MEXE,MIDP,NMT

JavaPhone

A Java API specification controlling contacts, power management, call control, and phonebook management, intended specifically for the programmability requirements of mobile phones.
JTAPI

The Java Telephony API is an extensible API that offers an interface to all call control services (from those needed in a consumer device up to those of call centers). JTAPI is part of the JavaPhone API.
Kernel

Core of an operating system, a kernel manages the machine's hardware resources (including the processor and the memory), and provides and controls the way any other software component can access these resources. The kernel runs with a higher privilege than other programs (so-called user-mode programs). The power and robustness of an OS's kernel play a major role in shaping overall system design and reliability.
MExE

Mobile Station Application Execution Environment (GSM 02.57): a framework to ensure a predictable environment for third-party applications in GSM or UMTS handsets (ie the Mobile Station). MExE does this by defining different technology requirements called "classmarks". MExE classmark 1 is based on WAP, classmark 2 on PersonalJava and JavaPhone, and classmark 3 on J2ME CLDC and MIDP. Other classmarks may be defined in the future. MExE specifies additional requirements for all classmarks, for instance a security environment, capability and content negotiation, a user profile, user interface personalization, management of services and virtual home environment. A handset can support any number of classmarks.
MIDP

Mobile Information Device Profile. Set of Java APIs that is generally implemented on the Connected Limited Device Configuration (CLDC). It provides a basic J2ME application runtime environment targeted at mobile information devices, such as mobile phones and two-way pagers. The MIDP specification addresses issues such as user interface, persistent storage, networking, and application model.
Network operator

Company with a license to provide wireless telephony services.
NMT

Nordic Mobile Telephone. One of the earliest 1G cellular network developed jointly in Denmark, Finland, Iceland, Norway and Sweden. Originally operated in the 450 MHz band. Later the 900 MHz was used as well.
OBEX

Object Exchange: a set of high-level protocols allowing objects such as vCard contact information and vCalendar schedule entries to be exchanged using either IrDA (IrOBEX) or Bluetooth. Symbian OS implements IrOBEX for exchange of vCards, for example between a Nokia 9210 Communicator and an Ericsson R380 Smartphone,

GSM gateway,HSCSD,IMT-2000,I-Mode,IrDA,Java

GSM Gateway
A mobile phone device thats takes a single SIM card or multiple SIMS and provides a telecoms interface - either Analogue (FXO/FXS) to allow connection to Analogue trunk of a Telephone System (or to allow a standard telephone to connect directly), ISDN Interfaces such as ISDN2e and ISDN30 for connection to ISDN telephone systems and VOIP interfaces to allow the gateway to connect to a Voice Over IP network. The GSM Gateway enables these traditional telephony devices to connect directly to the mobile phone network, usually providing the user with access to cheaper call rates. (see http://www.gsmsave.co.uk/ )
HSCSD

High Speed Circuit Switched Data: dedicated circuit-switched data communications technology for GSM which boosts data throughput up to 14.4 Kbps in a single channel, and by aggregating channels, up to 57.6 Kbps. An asymmetrical service can be offered where, for instance, one channel is allocated for the uplink and several are aggregated for the downlink. HSCSD can provide a fixed bit rate (transparent mode) or a variable one (non-transparent mode). In most cases HSCSD is available to network operators as a pure software upgrade. HSCSD started to appear in some networks in 1999.
IMT-2000

International Mobile Telecommunications-2000: term used by the International Telecommunications Union (ITU) for the specification for projected third-generation wireless services. Formerly referred to as FPLMTS, Future Public Land-Mobile Telephone Systems.
i-mode

Proprietary packet-based information service for mobile phones. i-mode delivers information (such as mobile banking, and train timetable) to mobile phones and enables exchange of email from handsets on the PDC-P network. Launched in 1999 by NTT DoCoMo, i-mode is very popular in Japan (especially for email and transfer of icons), but is not currently being used elsewhere.
IrDA

1. A suite of protocols for infrared (IR) exchange of data between two devices, up to 1 or 2 meters apart (20 to 30 cm for low-power devices). IrDA devices typically have throughput of up to either 115.2 Kbps or 4 Mbps. IrDA protocols are implemented in Symbian OS phones, many PDAs, printers and laptop computers. 2. The Infrared Data Association, the industry body that specifies IrDA protocols, originally founded by Hewlett-Packard and others.
Java

Industry standard object-oriented language and virtual machine, invented by Sun Microsystems and formally released in 1996. Java is an ideal language for network applications and applets. Sun's Java specifications include many Java APIs and platforms, including the JavaPhone API and PersonalJava platform, which are included in Symbian OS.
J2ME

Java 2 Platform, Micro Edition (J2ME): The edition of the Java platform that is targeted at small, standalone or connectable consumer and embedded devices. The J2ME technology consists of a virtual machine and a set of APIs suitable for tailored runtime environments for these devices. The J2ME technology has two primary kinds of components – configurations and profiles.

Dual band,Dual mode,GSM,GPRS

Dual band

Dual band mobile phones can work on networks that operate on different frequency bands. This is useful if you move between areas covered by different networks. Some networks operate on two bands, for instance GSM-1800 in town centers and GSM-900 in the rest of the country.
Dual mode

Dual mode mobile phones have more than one air interface and hence can work on more than one network. One example is phones that operate on both digital and analog networks. They are quite useful if you want the advantages of a digital phone, but regularly visit areas where analog is the only service available.
EDGE

Enhanced Data Rates for GSM Evolution. An enhanced modulation technique designed to increase network capacity and data rates in GSM networks. EDGE should provide data rates up to 384 Kbps. EDGE will let operators without a 3G license to compete with 3G networks offering similar data services. EDGE is not expected before 2001 at the earliest.
EPOC

Deprecated term. Refer to Symbian OS.
E-TACS

Extended Total Access Communications System: a 1G mobile phone network developed in the UK and available in Europe and Asia.
FCT

Fixed Cellular Terminal

- also known as : GSM Gateway, GSM Modem, GSM Router, Mobile Gateway, channel bank, GSM channel Bank, ISDN GSM Gateway, analogue GSM gateway.
Fixed Cellular Terminal Mobile Device that allows fixed telephony devices such as PBX Telephone Systems to connect directly to the GSM Mobile Phone Network - This may be to allow PBX users to call colleages on their mobiles free of charge, or call other mobile users at reduced rates (depending upon available tariffs) - or for use in remote offices where no fixed line services are available (eg building site / remote monitoring post) - for landline substitution then Fixed Cellular Terminals are available that can provide voice, fax and data over the GSM network such as the Ericsson F251m .
GPRS

General Packet Radio Service: a radio technology for GSM networks that adds packet-switching protocols, shorter set-up time for ISP connections, and offer the possibility to charge by amount of data sent rather than connect time. GPRS promises to support flexible data transmission rates typically up to 20 or 30 Kbps (with a theoretical maximum of 171.2 Kbps), as well as continuous connection to the network. A 2.5G enhancement to GSM, GPRS is the most significant step towards 3G, needing similar business model, and service and network architectures. GPRS started to appear in some networks during 2000.
GSM

Global System for Mobile communications, the most widely used digital mobile phone system and the de facto wireless telephone standard in Europe. Originally defined as a pan-European open standard for a digital cellular telephone network to support voice, data, text messaging and cross-border roaming. GSM is now one of the world's main 2G digital wireless standards. GSM is present in more than 160 countries and according to the GSM Association, accounts for approximately 70 percent of the total digital cellular wireless market. GSM is a time division multiplex (TDM) system. Implemented on 800, 900, 1800 and 1900 MHz frequency bands.

Celluar Radio,Circuit Switching,CLDC

Cellular Radio

The technology that has made large scale mobile telephony possible. Current cellular networks reuse the same radio frequencies by assigning them to cells far enough apart to reduce interference. A cell is the geographical area covered by one radio base station transmitting/receiving in the center. The size of each cell is determined by the terrain, transmission power, and forecasted number of users. Service coverage of a given area is based on an interlocking network of cells, called a cell system.
Circuit-Switching

Means of creating a connection by setting up a dedicated end-to-end circuit, which remains open for the duration of the communication.
CLDC

J2ME Connected Limited Device Configuration. The CLDC serves the market consisting of personal, mobile, connected information devices. This configuration includes some new classes designed specifically to fit the needs of small-footprint devices.
Communicator

A generic name for information centric mobile phones. In effect a fully featured personal digital assistant and mobile phone in one unit. The Nokia 9210 Communicator is an example of such a Symbian OS phone.
Content Provider A company that provides services to mobile phone users or network operators. These services could be shopping, web surfing, chat rooms, playing games, accessing data such as music and books through a server.
Crystal

Code-name for a half VGA reference design for Symbian OS.
D-AMPS

Digital AMPS (Digital-Advanced Mobile Phone Service) is the digital wireless standard widely used throughout the Americas, Asia Pacific and other areas. D-AMPS uses digital TDMA on the one hand, and is required to be compatible with installed AMPS base station networks on the other. D-AMPS operates on the 800 and 1900 MHz bands.
DCS

1800 Digital Communications System: another name for GSM working on a radio frequency of 1800 MHz. Also known as GSM1800 or PCN, this digital network operates in Europe and Asia Pacific.
Digital

A way of encoding information. On digital networks, data doesn't need to go though the extra step of being converted to an analog signal, voice is sampled and coded in a way similar to how it is recorded on a CD. Digital networks are fast replacing analog ones as they offer improved sound quality, secure transmission and can handle data directly as well as voice. Digital networks include mobile systems GSM, D-AMPS, CDMA, TDMA and UMTS.

Type of Mobile genaration

Mobile Phone Glossary

1G In mobile telephony, first-generation systems were analog, circuit-switched. Voice links were poor, handoff unreliable, capacity low, and security non-existent. 1G systems are not now under active development indeed, in some areas 1G spectrum is being auctioned for 2G and3G use.

2G In mobile telephony, second-generation protocols use digital encoding and include GSM, D-AMPS (TDMA) and CDMA. 2G networks are in current use around the world. These protocols support high bit rate voice and limited data communications. They offer auxiliary services such as data, fax and SMS. Most 2G protocols offer different levels of encryption

2.5G In mobile telephony, 2.5G protocols extend 2G systems to provide additional features such as packet-switched connection (GPRS) and enhanced data rates (HSCSD, EDGE).

3G In mobile telephony, third-generation protocols support much higher data rates, measured in Mbps, intended for applications other than voice. 3G networks trials started in Japan in 2001. 3G networks are expected to be starting in Europe and part of Asia/Pacific by 2002, and in the US later. 3G will support bandwidth-hungry applications such as full-motion video, video-conferencing and full Internet access. http://www.3gpp.org/

AMPS Advanced Mobile Phone System: a 1G standard which operates in the 800-900MHz-frequency band. It is still widely used in the United States.

Analog The simple way to transmit speech, which is translated into electronic signals of different frequency and/or amplitude. The first networks for mobile phones, as well as broadcast transmissions, were analog. Due to being longer established in some countries, analog networks may offer better coverage than digital networks, however analog phones are less secure and suffer more from interference where the signal is weak. Analog systems include AMPS, NMT and ETACS.

API Historically, "application programming interface". Practically, an API is any interface that enables one program to use facilities provided by another, whether by calling that program, or by being called by it. At a higher level still, an API is a set of functionality delivered by a programming system, and as such the mix of APIs in a particular system tells you what that system can do.

Bluetooth An open specification for seamless wireless short-range communications of data and voice between both mobile and stationary devices. For instance, it specifies how mobile phones, computers and PDAs interconnect with each other, with computers, and with office or home phones. The first generation of Bluetooth permits exchange of data up to a rate of 1 Mbps per second, even in areas with much electromagnetic disturbance. It transmits and receives via a short-range radio link using a globally available frequency band (2.4 GHz ISM band).

bps Bits per second: a way of quantifying data transmission throughput. It is the number of pieces of information (bits) transmitted or received per second.

C++ An industry standard object-oriented compiled language, formally standardized in 1998, but tracing its history to the early 1980s, with an heritage in C and Simula. C++ is a general-purpose programming language with a bias towards systems programming. C++ runs on most computers from the most powerful supercomputers to the ubiquitous personal computers. Symbian OS is written in C++.

CDMA Code Division Multiple Access: a digital wireless telephony transmission technique. 1. CDMA allows multiple frequencies to be used simultaneously (Spread Spectrum). The CDMA idea was originally developed for military use over 30 years ago. 2. The CDMA standards used for second-generation mobile telephony are the IS-95 standards championed by QUALCOMM.

Mobile parts/electronic parts of mobiles

1. Ringer
2. Vibrator
3. Microphone
4. Normal fuse
5. L.E.D (Light Emitting Diode)
6. Thermal fuse.
7. Polarity capacitor.
8. Non polarity capacitor.
9. Cermic capacitor.
10. Normal diode.
11. Step-up Diode.
12. Gener Diode.
13. Transistor.
14. Power Transostor.
15. Register.
16. Normal.
17. Duplex antenna Switch.
18. RX-TX
19. P.F/R.F
20. Hager I.C
21. Local V.C.O
22. 13/26 MHZ Crystlel.
23. Power I.C
24. Charging I.C
25. Inter facing I.C
26. Audio I.C
27. RAM.
28. ROM.
29. EEP ROM.
30. CPU.
31. Flash I.C
32. Back -Up Battery.
33. First If Filter.
34. Second If Filter.
35. Coil.
36. Coupler.
37. UEM I.C.
38. Key Pad I.C.
39. Display I.C
40. SIM I.C
41. Mixture I.C
42. Four Pin Frequency.
43. Clock Crystel/RTC.
44. Speaker.

Mobile SIM companies

A subscriber identity module (SIM) on a removable SIM card securely stores the

service-subscriber key (IMSI) used to identify a subscriber on mobile telephony devices (such as computers and mobile phones). The SIM card allows users to change phones by simply removing the SIM card from one mobile phone and inserting it into another mobile phone or broadband telephony device.

A SIM card contains its unique serial number, international unique number of the mobile user (IMSI), security authentication and ciphering information, temporary information related to the local network (also temporary local id that has been issued to the user), a list of the services the user has access to and two passwords (PIN for usual use and PUK for unlocking).
SIM cards are available in two standard sizes.

The first is the size of a credit card (85.60 mm × 53.98 mm x 0.76 mm). The newer, more popular miniature version has a width of 25 mm, a length of 15 mm, and a thickness of 0.76 mm. However, most SIM cards are still supplied as a full-sized card with the smaller card held in place by a few plastic links and can be easily broken off to be used in a phone that uses the smaller SIM.
The first SIM card was made in 1991, with Munich smart card maker Giesecke & Devrient selling the first 300 SIM cards to Finnish wireless network operator Elisa Oyj (formerly Radiolinja).

http://www.telestial.com/
http://www.wisegeek.com/what-is-a-sim-card.htm
http://intouchsmartcards.com/

http://www.telestial.com/sim_cards.php

What is mobile?

Definitions of mobile phone on the Web:

cellular telephone: a hand-held mobile radiotelephone for use in an area divided into small sections, each with its own short-range transmitter ...
wordnetweb.princeton.edu/perl/webwn

A mobile phone or mobile (also called cellphone and handphone, as well as cell phone, cellular phone, cell, wireless phone, cellular telephone, mobile telephone or cell telephone) is a long-range, electronic device used for mobile voice or data communication over a network of specialized base ... en.

www.wikipedia.org/wiki/Mobile_phone

A portable telephone that connects with the telephone network over radio wave transmission
en.
www.wiktionary.org/wiki/mobile_phone

Attributive form of mobile phone, noun
en.
www.wiktionary.org/wiki/mobile-phone

A cellular telephone that is permanently installed and integrated into the wiring of a motor vehicle. May be either hands free or hand held models. Also called a car phone.

www.nhtsa.dot.gov/people/injury/research/wireless/append.htm

The type of cellular phone that is installed in a motor vehicle. There are three main types of cellular phones mobile, transportable, and portable. A mobile unit is attached to the vehicle, draws its power from the vehicles battery and has an external antenna.

www.vita.virginia.gov/services/voiceServices/cellular/commonTerms.cfm

This is a portable phone that usually the cellular or satellite networks to transmit data such as a voice conversation or SMS.
www.digital10.com/index.php