Thanks for reaching out and sorry to hear you are experiencing trouble. A device cannot connect to a tower operated by a network that a selected plan does not have access to, so your suspicion is incorrect as your device would not be allowed to attach to the tower in that scenario long before a PDP context could be attempted to be created (which is when the device attempts to access an APN and obtain an IP address).
During the operator scan, when a device solicits attaching to a tower, that request is sent back to our network where our network approves or denies the request. Once approved, a device is then allowed to attach to the tower, and after it is attached then a device must set the APN configuration appropriately and create a PDP context to enable a data session. If a particular operator is not accessible via Hologram, the attach would not succeed and the module will continue its operator scan to find another suitable operator in range.
The situation you described, where a device attaches to a tower but does not obtain an IP address, can occur only for one of the following reasons:
- Device does not have the
hologram APN set correctly (you can check this with the
AT+CGDCONT? command if supported by your hardware)
- A problem with the local visiting network (very rare)
If you have not already done so, please reach out to email@example.com so we can diagnose the issue you’re experiencing, and we’d be happy to help track down the fault.