MC7455 Deregistered (AT&T)

[pizzacarl]

Hi all,

Need some help troubleshooting my MC7455... Used this for about 2 months on AT&T with no issues and now suddenly I can't connect.. Here's what I see when running that at!gstatus? command

at!gstatus?
!GSTATUS:
Current Time: 585 Temperature: 39
Reset Counter: 1 Mode: ONLINE
System mode: WCDMA PS state: Not attached
WCDMA band: WCDMA 850
WCDMA channel: 4359
GMM (PS) state:DEREGISTERED LIMITED SERVICE
MM (CS) state: IDLE NORMAL SERVICE

WCDMA L1 state:L1M_PCH_SLEEP LAC: 713D (28989)
RRC state: DISCONNECTED Cell ID: 0619AB45 (102345541)
RxM RSSI C0: --- RxD RSSI C0: ---
RxM RSSI C1: --- RxD RSSI C1: ---


OK

Additional background- reads the SIM just fine. Have an upgraded power supply. Resides in a WW826-T2
Any help will me much appreciated.

[bjames]

It appears the network has deregistered your SIM card/plan.

Some of the carriers are checking the IMEI of the modem to make sure it matches that of the plan.

I would test a different SIM Card if you have one to eliminate that as your problem.

[pizzacarl]

Ugh - was afraid of that. Of course now I'm having trouble getting in touch with Nomad to cancel my subscription and/or get a new SIM. Thanks for your reply!

[pizzacarl]

Update to my post - procured a new SIM, still cant get connected and tried basically every step in the troubleshooting guide. Seeing this with at!gstatus?:

at!gstatus?
!GSTATUS:
Current Time: 386 Temperature: 36
Reset Counter: 1 Mode: ONLINE
System mode: WCDMA PS state: Attached
WCDMA band: WCDMA 850
WCDMA channel: 4359
GMM (PS) state:REGISTERED NORMAL SERVICE
MM (CS) state: IDLE NORMAL SERVICE

WCDMA L1 state:L1M_PCH_SLEEP LAC: 713D (28989)
RRC state: DISCONNECTED Cell ID: 0619AB45 (102345541)
RxM RSSI C0: --- RxD RSSI C0: ---
RxM RSSI C1: --- RxD RSSI C1: ---


OK