Cellular Generation 1G to 4G

During the 1G (First Generations) will be developed from a home phone (PSTN). However, the transferable we called the Mobile Telephone that can communicate wirelessly. A phone in Analog and a Single Band is not compatible with phones across Operators, or can not be used overseas, such as Cellular 900 or World phone800 in the past during the 1G will not use the SIM Card will be used program numbers into the phone. Therefore, the data transmission is Analog this information will not be sent any codec. Tuning can be made. Or illegally eavesdrop the conversation has made Security System security is very low.
1G-generation phones will only be used to make a call - and receive calls. FAX Analog transmission is not only able to send and receive SMS and Data

During the 2G (Second Generations) will develop a system from Analog to Digital Phone this period can be used both Voice and Data-quality voice conversation is sharper and is safe from the bug. Because Digital signals are converted before sending and receiving data encoded 0 and 1, and also to bring Roaming with other networks. Abroad in the GSM system with the use of Data will be able to send and receive data through the CSD in the early technology and developed a generation 2.5G GPRS and EDGE technology in our current era, so 2.75G. With these technologies. Make the station will have the functionality to play with Service WAP or Internet and so much more that was developed to run on the network.

Generation 3G (Third Generations) operation of the network under the same standard to all services available together with the Customize or modify applications. Have the appropriate user's Solutions are able to apply to each Operator in this era of service to a wide range of Multimedia services together. And can be used simultaneously, such as VDO Call, Internet, E-mail, VDO on Demand, Radio services, TV on Mobile, Chat, or Social Networking. In this generation 3G data transfer speeds are higher. The technology of the network and equipment used. There are currently developed as a 3.5G technology and HSPA. 3G standards have been developed continuously from the GSM standard, which will be developed in each Phase will have new features. Occur continuously.

Generation 4G (Forth Generations) is an age where all things. Everything will communicate all the same equipment under the Protocol, or IP Device will have a variety of self as computer equipment that can contact each other under the TCP / IP.
Age of High Speed is a very high speed. Transmits data quickly with Quality Media such as pictures and better sound, and it is the era of the Service are included together. Both of Telecommunications and Data Communications. Perfectly.