What’s the difference between LTE 3G and 2G?

2G – Delivered digital signal and offered up to 250Kbps speed. Supports voice, text and data services. 3G – At least 200Kbps up to 3Mbps speed . 4G – 4G delivers up to 100Mbps for mobile access, and up to 1Gbps for wireless access.23 Eki 2016