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).
Wi-Fi 6 (802.11 ax)
AnTuTu is a leading Android benchmark that measures CPU, graphics and memory performance of a device. The higher the score, the better.