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Message: <blockquote data-quote="laal" data-source="post: 9493307" data-attributes="member: 94459">Mobile phone general constructionBasics of mobile phone:  See the basic components of a mobile phone.  <img src="http://www.nokia-tuning.net/images/mobileconstruct.gif" alt="" class="fr-fic fr-dii fr-draggable " style="" />   Components description:   RF section  Radio frequency transmit and receive component.  converts all RF signals for baseband and from baseband to RF section  Rx = Receive; Tx = Transmit    Ananlog Baseband/Voiceband CODEC  Coder/Decoder. Digitalize signals for the DSP and analogized signals for RF.    Power managemant / DC-DC  this component regulates and supplies all components in mobile pohne.  DC = Direct current    DSP/microprocessor  main processing unit of mobile phone, mostly used ARM based processors.  DSP = Digital Signal Processor    Flash / ROM, SRAM  permanent memory to store operating system and phones/users specific data            ..................................................  ................................................    more few info for beginners..    3G  3G is an short-term for 3rd-generation. Analog cellular phones were entitled the first generation.  3G is improperly defined, but 3G enabled phones have a High speed datas and they also make streaming videos possible.   There are several different 3G technology standards. The most prevalent  is UMTS, that is based on WCDMA. (WCDMA and UMTS are often used  interchangeably.)   Alphanumeric Display  A display that is capable of displaying letters and numbers, but not graphics.   Bluetooth   Bluetooth is a wireless personal area network (PAN) specification which  connects phones, computers, appliances, etc. among each other over  short distances without the use of wires by using low power radio  frequencies.    CDMA  CDMA stands for Code  Division Multiple Access. CDMA is a type of digital wireless technology  that allows large amounts of voice and data to be transmitted on the  same frequency. It is a second-generation cellular technology or could  be referred as 2G and is available in the United States, Pacific Asia,  Canada, Latin America, etc. Most of the service providers of CDMA  migrate to a high-speed data technology called '1xRTT'.  Connect Mobiles does not publish Reports or Articles on CDMA Phones   Dual-band   All those Phones which can switch between two different bands of  frequencies are known as Dual band phones. In Europe Dual-band is  usually denoted by 'GSM900/GSM1800' capable phone, while in USA it is  denoted by 'GSM850/GSM1900' or in a combination of two other bands.   EDGE   EDGE stands for Enhanced Data rates for Global Evolution. This  technology is mainly being promoted by GSM Commmunities. EDGE Technology  helps in gaining faster Data Transfer.   EMS   EMS stands for Enhanced Message Service. EMS is an extension of  SMS(Short Messaging Service) that enables the capability of sending of a  mix of sounds, animations simple melodies, images and formatted text in  form of a message to another EMS-compatible phone.   GPRS   GPRS Stands for General Packet Radio Service. It is a technology that  enables high-speed wireless Internet and other data communications. GPRS  is often referred to be a '2.5G' technology.    GSM   GSM Stands for Global System for Mobile communications. GSM is the  international digital radio standard created by the European  Telecommunications Standards Institute.    IMEI   IMEI stands for International Mobile Equipment Identity. ImEI is a  unique serial number used to segregate each mobile. Every Nokia cell  Phone has its IMEI Printed on the Main Unit.   Infared port (IrDA)   Infrared is a wireless technology that uses a beam of invisible light  to transmit information. The utility of Infrared is somewhat similar to  that of Bluetooth.   Java (J2ME)  J2ME Stands for Java 2 Micro Edition. It allows the device to run specially written applications.    Li-Ion battery  Lithium-Ion type of battery.   Li-Po battery  Lithium Polymer type of battery.   MMC Cards  MMC Cards Stands for Multi-media Cards. They are of larger size when compared to RS MMC(Reduced sized Multi-media cards)    MMS   MMS Stands for Multimedia Messaging Service. It is a further extension  of SMS(Short Messaging Service) and EMS(Enhanced Messaging Service).  MMS(Multi-Media Messaging Service) is designed to send multimedia  extensions to messages, such as video and sound Faster.   Polyphonic Ringtones   Polyphonic ringtones have the capability to play multiple sounds  simultaneously. It allows the sound output to be much more natural and  realistic.   Predictive Text Input  Predictive  Text Input is a technology which allows one to enter text by pressing  only one key per letter. T9 is a Pedictive text input.   RS MMC  RS MMC stands for Reduced sized Multi-media cards. RS MMCs are smaller in size when compared to MMC(Multi-media Cards)    SIM Cards   SIM Cards stands for Subscriber Identity Module Cards. SIM Cards are  smart card used in digital phones. They carry the user's identity for  accessing the network and receiving calls. SIMs are also used to store  Subscribers personal infromation.   SMS  SMS Stands for Short Message Service. Used for Sending simple text to another compatible phone.   Standy-by Mode   Stand-by Mode is the main screen where one can see, the option of  entering the Menu, the selected Wallpaper, Network and Battery life.    T9  T9 is a Predictive Text Input.         </blockquote>

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