Second generation network (2G) is the most common network type, and includes GSM and GPRS. 2.75G is often of EDGE/EGPRS type. Third generation (3G) includes UMTS (W-CDMA) and is fast (useful for mobile internet).
2G, 3G, 4G (LTE)
Vodafone, 2degrees, Spark, Skinny
4G / 3G (Dual SIM)
AnTuTu is a leading Android benchmark that measures CPU, graphics and memory performance of a device. The higher the score, the better.