I have following mPCIe modem in a PC Engines APU3 device: ATI Manufacturer: Sierra Wireless, Incorporated Model: MC7750 Revision: 33, SWI9600M_03.05.10.13ap r6237 cnszxd00000132 2014/04/18 16:55:52 MEID: ************** ESN: ***********, ********** IMEI: *************** IMEI SV: 1 FSN: *************…

Maybe this will help: AT&V &C: 1; &D: 2; &E: 0; &F: 0; &S: 0; &W: 0; E: 1; L: 0; M: 0; Q: 0; V: 1; X: 1; Z: 0; \Q: 3; \S: 0; \V: 0; O: 0; S0: 0; S2: 43; S3: 13; S4: 10; S5: 8; S6: 2; S7: 0; S8: 2; S9: 6; S10: 14; S11: 95; S30: 0; S103: 1; S104: 1; +FCLASS: 0; +ICF: 3,3; +IFC: 2,2; +IPR: 115200; +DR…

Have you resolved this problem?

What is the problem you have right now?

Same problem as Topic Starter. I have mode that can’t start network registartion. AT+CPIN? return SIM wrong.

I also have MC7700 and this module work perfect in same configuration.

How many different sim have you tested?

No. I did not manage to resolve it and I tested different SIM cards and also different modems (non Sierra Wireless), with the same SIM cards and problem is only with Sierra Wireless modem.

[image] jyijyi: How many different sim have you tested? I think three. Also tested SIM cards on Huawei modem and no issues with Huawei modem. Problem is only with MC7750 modem.

FYI, I’ve also asked in different thread is my modem locked in any way at Is my Sierra Wireless MC7750 locked in any way?

MC7750 and `CME ERROR: SIM wrong` with various SIM cards

Legacy Legacy AirPrime modules

jyijyi April 7, 2023, 2:17am 3

Could it be hardware issue on the sim slot pin from modem?

How to reset MC7750 into QMI and AT-command mode on Linux?

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MC7750 and `CME ERROR: SIM wrong` with various SIM cards

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