Issue description: In some cases, devices connect to the GSM operators which do not provide GPRS connectivity. The common indication of the issue is that device is not sending data but responding to SMS commands (SMS command "gsminfo" includes text "GPRS 0").
Causes: Some operators are unsupported by the SIM card provider, do not provide GPRS services or having local issues communicating with our devices. Majority of such cases are cause by the local operator or SIM card provider issues.
Actions:
1. Perform basic troubleshooting for object not sending data: send SMS commands "gsminfo", "getapn", "coords" and "imei". The answer to SMS command "gsminfo" should look like this:
2. Check if the device has "Temporary blacklist" functionality enabled in the device configuration. It can be checked by sending SMS command:
password getcfg 144
The device should respond in two ways:
2.1. "ID:144;value:900" (or any other value) means that temporary blacklist is enabled. In this case, proceed to step 4.
2.2. "ID:144;value:0" it means that temporary blacklist is disabled. Proceed to step 3.
Note: the answer will be received only in case "Enable configuration over SMS" is enabled in the device CFG. Otherwise, the device will respond "You do not have permission to read the settings".
3. In case Temporary blacklist is disabled, you can enable it in two ways:
3.1. By SMS command (for 4th and 5th gen devices):
password setcfg 144 900
3.2. By uploading DIFF/CFG file with this parameter changed:
If successful, the device will put the unsupported operator to the "Temporary blacklist" for 900 seconds and will attempt to find another operator which has GPRS support.
4. In some cases, temporary blacklist does not help because there is only one operator working with the specific SIM card provider. In this case, please refer to the SIM card provider's support to investigate the issue further.