Cdma is exclusively used in the united states, canada and japan. The gsm network operates in the frequency spectrum of 850mhz and 1900mhz. However, most of these phones are either locked to one carrier or not easy to find. Gsm supports transmitting data and voice both at once, but cdma have not this feature. Several forms of mobile data communication are offered by cdma and gsm. The first option is gprs which is available for both the networks at an average speed of 150 to 170 kbps. The entire information about the user and the account is stored in the internal memory of the device or handset. As the european union permissions gsm use, so cdma is not supported in europe. Gsm is in use over 80% of the worlds mobile networks in over 210 countries as compared to cdma. The real problem with the cellular industry is all the.
Cdma code division multiple access is a technology that forms the basis of 3g mobile phones. The most major difference between cdma and wcdma is in the group of. Whats the difference between these cellular standards. Its first of the two part lectures which will cover gsm and cdma, the. The cdma network operates in the frequency spectrum of 850mhz and 1900mhz. Difference between gsm and cdma with comparison chart. How reliable is the gsm network technology at t mobile. As i mentioned earlier, gsm is a widely used network technology across the globe. Wcdma is wideband cdma that still uses code division to divide the channels.
Unreal mobile has grown quite a bit since we first launched our service. All about cdma sprint phones will a brand new phone work. Cdma is almost exclusively used in united states and some parts of canada and japan. The difference between cdma and gsm unlocked unreal mobile. There are also other devices which use 3g networks and will work with both gsm or cdma. Gsm stands for global system for mobile communication, while cdma stands for code division multiple access gsm uses fdma frequency division multiple access and tdma time division multiple access. Difference between cdma and cdma pdf semantic scholar. Cdma vs gsm phones switching gsm phones between different networks is easier than with cdma phones. All about gsm sim card phones locked vs unlocked phones should i bring my own phone, or buy a sim card. Gsm and cdma in hindi difference between gsm vs cdma. Cdma code division multiple access and gsm global system for mobiles are shorthand for two older radio systems 2g and 3g used in cell phones.
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