TD-SCDMA UMTS

In general, WCDMA is considered as 3G technology while LTE is considered as 4G technology. LTE provides higher data rates than WCDMA by achieving higher spectral efficiency.

There is no relation ship between CDMA technology and WCDMA . So you cant use CDMA sim in WCDMA slot as it’s higher standard of GSM service.20 Ağu 2015

3G CDMA Network Retirement As Verizon continues to build for the future, we would like to keep you up to date with some important activities. We are actively decommissioning our 3G CDMA network and expect to be completed by no later than December 31, 2022 .