EM7455 UK EE SIM not recognised

IoT Modules MC/EM Series
1

We have a few devices in the UK with EE Sims that are not detected. Other devices appear to be ok.
Unfortunately I am unable to try the SIMs in other devices but the SIM and the device have been swapped.

at+cpin?

+CME ERROR: SIM not inserted

Firmware has been updated to the latest
2 “” " current fw version: 02.39.00.00" true
2 “” " current carrier name: GENERIC" true
2 “” " current config name: GENERIC_002.085_000" true
2 “” " current subpri index: 000" true

A different SIM in the second slot works ok

Any Ideas ?

Thanks

2

so this is only happening in particular SIM in SLOT1?

3

With a few SIMs from the same carrier (EE)

4

are they faulty SIM cards?

5

SIM cards have been swapped but still and issue

6

so the problematic module cannot read all SIM card?

7

Nope Just these ones from the carrier EE. No issues with other carrier SIM cards

8
  1. problematic module can read other carrier SIM card
  2. problematic module cannot read EE SIM → how about putting these EE SIM cards other EM7455 module? How about putting these EE SIM cards to your phone?