I am not sure what I did(possibly something with system selection preference, but can not recall), Now EM9191 remains in WCDMA when at!band is set to all band (0) and at!selrat=0(Automatic)
at!gstatus?
!GSTATUS:
Current Time: 636 Temperature: 41
Modem Mitigate Level: 0 ModemProc Mitigate Level: 0
Reset Counter: 1 Mode: ONLINE
System mode: WCDMA PS state: Not attached
WCDMA band: WCDMA 2100
WCDMA channel: 3015
GMM (PS) state:NULL —
MM (CS) state: IDLE NORMAL SERVICE
WCDMA L1 state:L1M_PCH_SLEEP LAC: a172 (41330)
RRC state: DISCONNECTED UTRAN Cell ID: 019db3f7 (27112439)
RxM RSSI C0: -78 RxD RSSI C0: —
RxM RSSI C1: — RxD RSSI C1: —
OK
When forcing it to LTE:
at!selrat=04
OK
at!gstatus?
!GSTATUS:
Current Time: 703 Temperature: 41
Modem Mitigate Level: 0 ModemProc Mitigate Level: 0
Reset Counter: 1 Mode: ONLINE
System mode: Unknown PS state: Not attached
Unknow System Mode
OK
It was working few days before as normal. But, possibly I did something silly. And, now not able to recover it.
at!reset and complete power off/on does not help.
Any lead what has caused this issue and how to recover it?