AT&T GSM or CDMA

Is AT&T a CDMA or GSM network? AT&T is a GSM network carrier and works with GSM cell phones. GSM stands for Global System for Mobile Communications. GSM and CDMA are the 2 types of 3G networks that cell phone carriers use to provide your service.

The AT&T network uses GSM (Global System for Mobile Communications) technology, the world’s most popular wireless phone technology. Levels of service include: HSPA+ – When combined with enhanced backhaul, our HSPA+ technology is expected to deliver speeds up to 4x faster than ordinary mobile broadband.

Band 5 (850 MHz)