As GSM is an international standard, so it’s better to use GSM in international roaming. GSM is in use by 76% of users as compared to CDMA which is in use by 24% users. Data Transfer Rate. CDMA has faster data rate as compared to GSM as EVDO data transfer technology is used in CDMA which offers a maximum download speed of 2 mbps. Don't forget to like and subscribemy giveaway linkhttps://gleam.io/HpBQP/gift-card-giveaway. I see past discussions about CDMA-GSM phone conversion, but the posts either confound compatibility w/locking (not the same issue), &/or go the other way, converting GSM to CDMA, &/or are old and possibly outdated. My q: I'm considering buying a Virgin Mobile iPhone. VM requires 1 year activation on their network before they'll provide an.
Huzefa Ezzy Answer: GSM offers a number of advantages over a CDMA connection. First and foremost, there is a wider variety in GSM service providers to choose from in comparison to CDMA. This cannot be done unless you change the hardware itself. CDMAand GSM are two different technologies used by the carriers andit's a difference in the hardware that makes it not possible foryou to convert a CDMA phone on GSM, or vice versa. The “CDMA Carriers” Verizon, Sprint, etc., are migrating from their current CDMA protocol technologies of 2G 1xRTT and 3G EV-DO to 4G LTE without doing any 2G GSM or 3G UMTS deployments. And, 4G LTE uses an OFDMA encoding protocol and has nothing to do with GSM. Somany gsm gsm mobiles are available in market for low cost but rim handsets cost is very high without good features i cant change my nomber it is problem i am prying god pls convert my rim cdma to rim gsm i want to know when it will happen. Pls convert to GSM.
The CDMA is based on spread spectrum technology which makes the optimal use of available bandwidth. It allows each user to transmit over the entire frequency spectrum all the time. On the other hand GSM operates on the wedge spectrum called a carrier. This carrier is divided into a number of time slots and each user is assigned a different time slot so that until the ongoing call is finished, no other subscriber can have access to this. GSM uses both Time Division Multiple Access (TDMA) and Frequency Division Multiple Access (FDMA) for user and cell separation. TDMA provides multiuser access by chopping up the channel into different time slices and FDMA provides multiuser access by separating the used frequencies.
2.Security
More security is provided in CDMA technology as compared with the GSM technology as encryption is inbuilt in the CDMA. A unique code is provided to every user and all the conversation between two users are encoded ensuring a greater level of security for CDMA users. The signal cannot be detected easily in CDMA as compared to the signals of GSM, which are concentrated in the narrow bandwidth. Therefore, the CDMA phone calls are more secure than the GSM calls. In terms of encryption the GSM technology has to be upgraded so as to make it operate more securely.
3.Spectrum Frequencies
The CDMA network operates in the frequency spectrum of CDMA 850 MHz and 1900 MHz while the GSM network operates in the frequency spectrum of GSM 850 MHz and 1900 MHz.
4.Global Reach
GSM is in use over 80% of the world’s mobile networks in over 210 countries as compared to CDMA. CDMA is almost exclusively used in United States and some parts of Canada and Japan. As the European Union permissions GSM use, so CDMA is not supported in Europe. In North America, especially in rural areas, more coverage is offered by CDMA as compared to GSM. As GSM is an international standard, so it’s better to use GSM in international roaming. GSM is in use by 76% of users as compared to CDMA which is in use by 24% users.
5.Data Transfer Rate
CDMA has faster data rate as compared to GSM as EVDO data transfer technology is used in CDMA which offers a maximum download speed of 2 mbps. EVDO ready mobile phones are required to use this technology. GSM uses EDGE data transfer technology that has a maximum download speed of 384 kbps which is slower as compared to CDMA. For browsing the web, to watch videos and to download music, CDMA is better choice as compared to GSM. So CDMA is known to cover more area with fewer towers.
6.Radiation Exposure
GSM phones emit continuous wave pulses, so there is a large need to reduce the exposures to electromagnetic fields focused on cell phones with “continuous wave pulses”. On the other hand CDMA cell phones do not produce these pulses. GSM phones emit about 28 times more radiation on average as compared to CDMA phones. Moreover, GSM phones are more biologically reactive as compared to CDMA.