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: *************
3GPP Release 8
+GCAP: +CIS707-A, CIS-856, CIS-856-A, +CGSM, +CLTE1, +MS, +ES, +DS, +FCLASS
…and I cannot make it connected to the network.
AT+CPIN?
+CME ERROR: SIM wrong
AT!GSTATUS?
Current Time: 21741 Temperature: 41
Bootup Time: 21295 Mode: ONLINE
System mode: LTE PS state: Not attached
LTE band: No band LTE bw: Unknown
LTE Rx chan: 65535 LTE Tx chan: 65535
EMM state: Deregistered No Cell
RRC state: RRC Idle
IMS reg state: No Srv
RSSI (dBm): 0 Tx Power: 0
RSRP (dBm): 0 TAC: 0000 (0)
RSRQ (dB): 0 Cell ID: 00000000 (0)
SINR (dB): -20.0
I tried with various different firmware versions, different SIM cards, from different providers, without success. I’ve tested also those SIM cards on different LTE modem and those SIM cards work there and I am able to get the Internet on that other modem with the same SIM cards.
AT!SPN?
!SPN: 2, "T-Mobile.pl"
AT+CPINR
+CPINR: SIM PIN,3
+CPINR: SIM PUK,10
+CPINR: SIM PIN2,3
+CPINR: SIM PUK2,10
I’ve also tested with Orange Poland. Any idea were could be the problem?