What is the Difference Between GSM and CDMA?

GSM and CDMA are two forms of wireless communication, which differ in speed and bandwidth. GSM is more widely used in Asia and Europe, and is used by major telecom companies such as Verizon and AT&T. Both GSM and CDMA are also used by some smaller companies like Hutch, Bharti and BSNL. Listed below are the differences between these two technologies. Listed below are some examples of devices that support both technologies.

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In GSM, subscribers hold subscriber identity modules (SIM) cards. These cards store user identification information and can be swapped between handsets. Users can easily transfer their contacts and calendar from one phone to another. With CDMA, users can swap handsets with ease, but they must be switched out according to operator regulations. Luckily, CDMA users enjoy a similar feature. Users of CDMA mobile phones can easily swap SIM cards and still transfer data.

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GSM makes use of wedge spectrum technology, or carrier, to efficiently utilize the available spectrum. Its system divides the spectrum into time slots, with each time slot assigned to a different user. CDMA, on the other hand, uses spread spectrum technology to make the best use of the available bandwidth. The former makes use of a wider frequency range and is interoperable with other cellular technologies.

While both technologies provide similar capabilities, CDMA’s range and capacity make it more efficient in urban areas. CDMA has better voice quality, more calls per cell, and better battery life. It also works better in low-signal areas. Both CDMA and GSM are widely used in developed nations. They are not replacing each other, but both are evolving. If you’re in the market for a new cell phone, it’s a good idea to switch to a CDMA-compatible model.

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