G = 1G (GPRS)
G stands for GPRS and is the slowest standard, used is the GSM network (2G).
E = EDGE (2.5G)
E is an extension of GPRS, it is called EDGE and it is correspondingly a little faster, but still uses the old GSM network (2G).
3G = 3G
3G stands for UMTS and is the successor to the GSM network and faster.
H (High Speed Downlink Packet Access) = 3.5G (HSPA+), HSPA 14.4
H and H+ are standing for HSPA and HSPA+. Both use the UMTS network, where H is faster than 3G and H+ is faster than H.
4G = 4G
4G stands for LTE and is the fastest.
INFO:
- Open the Applications tab and tap Settings.
- Tap Wireless Controls or Wireless & Networks.
- Tap Mobile Networks and then Access Point Names.
- Tap your APN setting. If the APN type is Default, then tap Menu and select Delete APN.
