2G, 3G still is in phone.

[zetabeta]

hint: use lte only or 4g only. some cases you have to use at commands.

for at commands. if gui is not available.

Code:

# shows a mode.
AT+QCFG=“nwscanmode”

# sets a mode.
AT+QCFG=“nwscanmode”[,<scanmode>]

<scanmode> Number format, network search mode
0 AUTO
1 GSM only
2 WCDMA only
3 LTE only