Connection Issues

[chrisorfitelli]

Im trying to connect my GSM 1400 to an azure mysql database. I had it working great, lost the prototype, rebuilt everything, now I cant get any of the sims to connect while in the arduinos.
Ive tried Verizon, ATT, T-mobile, Sprint. each one works in a cell phone but not in the arduino

Any ideas would be really helpful, thanks in advance
-Chris

Modem test
20:54:07.559 -> Starting modem test...modem.begin() succeeded
20:54:11.846 -> Checking IMEI...Modem's IMEI: xxxxxxxxxxxxx
20:54:11.880 -> Resetting modem...Modem is functoning properly

Running the network scanning script I get
20:09:33.780 -> Scanning available networks. May take some seconds.
20:10:08.741 -> > AT&T
20:10:08.741 -> > T-Mobile
20:10:08.741 -> > T-Mobile
20:10:08.741 ->
20:10:08.741 -> Current carrier: AT&T
20:10:08.908 -> Signal Strength: 26 [0-31]

GSM Location script
20:40:49.065 -> Starting GSM location.
20:41:03.345 -> Not connected

TestGRPS script - Ive seached everywhere and tried every APN code I could find
20:44:43.760 -> Connecting GSM network...OK
20:44:56.406 -> Enter your APN: GPRS_APN
20:45:12.334 -> Now, enter your login: login
20:45:21.322 -> Finally, enter your password: Attaching to GPRS with your APN...
20:45:23.669 -> ERROR
20:45:23.669 -> Connecting GSM network...OK
20:45:36.097 -> Enter your APN:

Ping Script
20:48:11.299 -> Starting Arduino GPRS ping.
20:48:24.183 -> Not connected
20:48:38.242 -> Not connected

GPRS UDP NTP Client script
20:49:28.523 -> Starting Arduino GPRS NTP client.
20:49:40.902 -> Not connected

[intstarep]

GSM gsmAccess(true); // Connect in debug mode and check what the modem is doing may help

[chrisorfitelli]

Getting a pile of
22:04:02.881 -> OK
22:04:03.085 -> AT+CREG?
22:04:03.085 -> +CREG: 0,0

Seems to not be registered, Although I know the sim works in a phone and the IMEI of the arduino has been added to the sims registration

[chrisorfitelli]

Im not sure what to make of this error but it seems to be more relevant to what you mentioned
22:09:54.929 → AT+CGATT=1
22:09:54.929 → ERROR
22:09:54.929 → Not connected

[intstarep]

22:04:03.085 -> +CREG: 0,0
is "normal". I added a counter in the gprs lib and sometimes it counts up to 150 +CREG: 0,0s before i get a connection..

From page 13 in the
"AT Commands Examples Examples for u-blox cellular modules"
you will find the commands for further investigation. I think your modem is good, SIM is valid and you can log into your network but can't establish a GPRS connection. Don't get me wrong: Is there still GPRS on your network or 4G UMTS only?