Default [Q] Trouble with a phone not listed!

Hi there! Apologies if this is the wrong forum for this - I am currently having some issues with a phone that isn't listed in your database.
The model is a "Sonim A8" I believe, it is branded as Land Rover.
A friend of mine suggested that I might be able to get some help with the problem on this forum, so I thought it might be worth asking!
My GPS chip (originally functional) has suddenly started getting stuck in to a loop of searching for GPS servers. I have tried a factory reset, which did nothing.
Any ideas on how I might go about fixing this, or even if it is a problem that can be fixed?

Thanks for any help you might be able to give me and apologies again if this is the wrong forum!