Question

What is the difference between cdma and gsm smartphone?

Answer 1

CDMA - Code Division Multiple Access, ( for better tune quality, transmitted through cable & then through wireless transmission)
GSM - Global System of Mobile (towers are the means for transmission).

Frequency of transmission is different in CDMA & GSM. In GSM system SIM card can be changed, but in CDMA system SIM card can't be changed.

Answer 2

The main differences I found are the next: Type of storage used: GSM (SIM Card) CDMA (Internal Memory). Network Service: GSM (Dictated by the user’s SIM card) CDMA (Dictated by the user’s device). International Ro, aming: GSM (Easier access) CDMA (More difficult access). Frequency band: GSM (Multiple: 850, 900, 1800, and 1900 MHz) CDMA (Single: 850 MHz). Data Transfer: GSM (GPRS/E/3G/4G/LTE) CDMA (EVDO/3G/4G/LTE).

Answer 3

 CDMA

• CDMA uses single frequency as carrier.
• The voice rate is 14.4 KBPS.
• CDMA power control to access method is better as Phased Locked Loops are used.
• Follows soft handoff, hence call handling is more efficient 

GSM

• GSM uses multiple frequencies.
• uses TDMA and FDMA for accessing signals. 
• The voice rate is  9.6 KBPS.
• uses less bandwidth