Disadvantages to CDMA are
Your handset can only be used with the provider that you got the phone from. Should your phone brake under contract but out of warranty, getting a new phone from the provider will automatically extend your contract another 2 years.
CDMA is limited to North America and a few other places, GSM is worldwide. If you like to travel oversea's, for the most part, leave your CDMA phone at home.
GSM phones can be unlocked meaning that they can be used with any GSM provider. If my GSM phone brakes, I can get a cheap replacement phone without having to extend my contract. When I travel oversea's, I can continue using my service, better yet, I can use a local sim card for the country I am in and make and receive calls at a much lower rate.
CDMA can only be used in North America. If one breaks a phone while not under contract but not under warranty, getting a replacement from the provider will automatically extend the contract by two years.
Disadvantages of CDMA include:
1. Due to its proprietary nature, all of CDMA's flaws are not known to the engineering community.
2. CDMA is relatively new, and the network is not as mature as GSM.
3. CDMA cannot offer international roaming, a large GSM advantage.
4. As the number of users increases, the overall quality of service decreases.
CDMA technology uses spread spectrum concept thereby giving users unique code to de-spread the information being sent to them. so CDMA is secure and occupies a large bandwidth of information compared to GSM technology.
main disadvantage of CDMA is Degradation of forformance if the number of user will be increases an RF channel.Bez in case of CDMA 10 users can acccess at the same time.
CDMA, offers better data transfer
Not all HTC phones are powered by CDMA.Some of CDMA phones are :HTC S720 (CDMA)HTC P4000 (CDMA)
no its HSDPA sprint or Verizon or both are cdma
cdma gsm
A CDMA repeater is a device that extends the signal range for cell phone providers that use the CDMA technology. CDMA (Code Division Multiple Access) is one of the technologies cell phone companies use for their phone service. More information on CDMA is available here: http://en.wikipedia.org/wiki/CDMA
Code division multiple access
does cdma work in egypt
There is no such thing as a CDMA card so there is no card for a CDMA device to accept. With a CDMA device you have to contact the service provider and give them the new device's ESN and once they have that changed in their system they will walk you through manually programming your new device.
voice quality is better cdma techology
There is no such thing as a CDMA SIM card, since CDMA phones do not use SIM cards.