No signal

Does your phone show coverage indications when this problem happens?

It sounds like this is potentially just an issue of poor coverage in your area, and if so - I'd recommend using the coverage check tool, but being specific what you're looking for..

1: The "check coverage" link that it sounds like you're using, is for checking predicted coverage in any given location.

2: The "check network" link that I'd suggest using, checks for known issues with service in any given location.

It also includes the facility to report suspected issues that aren't yet showing, and also register for updates on existing ones.

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I used to get this all the time -- reception is just really bad on all mobile networks around my area.

I had to call Orbital customer support to get it, but they gave me an in-home signal booster that really helped. Might be worth you giving them a call?

Did you check if there's any updates available for your phone?

Thanks I will give that a try.