Here is article about common network types of mobile phones :
- The first generation analog cellular systems, namely the AMPS (Advanced Mobile Phone Service). Version of AMPS known as Narrowband Advanced Mobile Phone Service (NAMPS) that incorporates digital technology, so that the system can be used to carry three times as much capacity on each call version.
- In 1981 appeared NMT (Nordic Mobile Telephone System). Or NMT Nordic Mobile Telephone is the analog mobile phone network was first used internationally in Northern Europe. This network operates on the 450 MHz frequency so often referred to NMT-450, there is also the NMT-900 that operates at a frequency of 900MHz.
- In 1982 came the GSM (Global System For Mobile Communication). 2G technology standards are the most widely used today is GSM (Global System for Mobile Communication), as used most mobile phones today. GSM operates in the 900, 1800 and 1900 MHz. GSM also supports high-speed data communications 14, 4 kbps.
- In this decade we know namely GSM and CDMA but now there is a new generation mobile era is the era of the 3rd generation (3G). Where this generation has penetrated to the wireless internet service. At first mentioned that the system uses technology Code Division Multiple Access (CDMA) is a digital will increase capacity by 10 to 20 times the cellular system. Systems based on CDMA become the method of transmission-mounting options on a new installation on the CDMA system.
