Hello oliverjt and welcome to the Digi Forums!
Can you expand on the question? Is it losing cellular connectivity and power cycling fixes the problem or is the device just cycling on its own?
Chances are, if you need to cycle the device to have cellular reconnect typically means you have a stale cellular connection. This can be remedied by Digi SureLink to detect a downed connection and recover automatically:
If you continue to have issue, feel free to open a case with us by emailing tech.support@digi.com and we can try and dig into the issue.
James Paczkowski
Digi Technical Support Engineer II