Force Quectel EG25 Modem to a Network using AT Commands

Technical Subjects
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1

I have an EG25GGBR07A08M2G Quectel Modem.
I am using an IOT sim which supports T mobile and AT&T. My location area has both networks.
Currently IOT sim is connecting to a T mobile network.
Any way to force IOT sim to connect to AT&T network using AT commands?

Thanks in advance

2

What MCC (country code) and MNC (network code) is your AT&T connection using?

I see both “310” and “311” defined for AT&T USA as MCC.

And many possible MNC values, like “070”, “080”, “170”, “380”, etc, etc.

Say it’s “310” and “070”. Then:

AT+COPS=1,2,"310070"

That lock remains until changed or the modem is reset.

3

Thanks, how do I keep I save it so that it is in the non volatile memory? So that even on power cycle of modem the setting remains?
Cheers

4

You can’t. The best you can do is to include the command somewhere where it’ll be run soon after system startup.

5

Thanks mate,
So my my IOT currently auto connects to a T mobile network.
My MCC is 310 and MNC is 410. I run the command AT+COPS=1,2,“310410” and does it auto connect to a AT&T network?
Cheers

6

I expect it to, yes.