At+cops=4,2,"plmn"

IoT Modules LPWA Module
1

I used this AT command AT+COPS=4,2,"PLMN" to set a PLMN which currently doesn’t have network coverage. According to the documentation, it should automatically switch to another PLMN when it can’t find the specified one. However, it hasn’t switched even after a long wait. Is this because the process of network searching takes a long time? How long does it usually take to finish searching? Will it switch immediately when the current PLMN is unavailable, or will it wait for a while?

2

hello, sorry for late reply, could you please tell us your current firmware version? thanks~

3

I am a different user, but the problem affects me too!

MODEM: BG95M3
Firmware: BG95M3LAR02A03_A0.206.A0.206

After starting the module, I select the automatic network mode (nwscanmode=0) and automatic operator selection (AT+COPS=0). I scan the available eMTC and GSM networks (AT+QCOPS=0). All available networks are provided, but I don’t know whether all of them are accessible to me (or lead to +CEREG: 3). Dialing into a valid network works correctly, so AT+COPS=4,2,"PLMN" works. However, if I ask AT+COPS?, the response is +COPS: 1,2,"PLMN". This doesn’t matter here, because I am connected and all is fine.
However, if I try to dial into an invalid network, a URC with +CEREG: 3 is carried out and from that point on nothing more. COPS? here provides +COPS: 1. Only change the operator selection to AT+COPS=0 or trying another network helped out here.

4

@mikey add mikey to support this issue,thanks~

5

Could you please tell me how long it took to respond the URC CEREG:3 after executing COPS=4,2?

6

Hi mikey,
i think the solution posted in ticket #195612 should help me :slight_smile: