I have now tried everything I know but to no avail 
I turn on my Copilot UK & NI version (bought new from apps store) and whether I set it to guide me to a destination or just track (follow the road on the map screen) it FREEZES after about 10 minutes of driving.
Can anyone help me please by telling me what I can do to stop this happening or what am I doing wrong?
I must stress that I am out in the countryside and therefore do NOT suffer from "urban canyons".
Remedies I have tried already:-
Ensure all other apps are closed.
Ensure I have a "good" satallite signal BEFORE I begin my journey.
Tried many different positions both on sreen bracket and on air vent bracket.
Tried both with and without a phone case.
Deleted any other sat nav apps (USA) that I had installed in my phone.
Deleted ALL other apps from my phone except the UK sat nav app.
Tried with the phone fully charged or indeed charging during the driving.
Totally deleted the sat nav app and then re-downloaded from fresh.
My phone is a brand new 3GS 16GB bought from o2.
Please help me
I turn on my Copilot UK & NI version (bought new from apps store) and whether I set it to guide me to a destination or just track (follow the road on the map screen) it FREEZES after about 10 minutes of driving.
Can anyone help me please by telling me what I can do to stop this happening or what am I doing wrong?
I must stress that I am out in the countryside and therefore do NOT suffer from "urban canyons".
Remedies I have tried already:-
Ensure all other apps are closed.
Ensure I have a "good" satallite signal BEFORE I begin my journey.
Tried many different positions both on sreen bracket and on air vent bracket.
Tried both with and without a phone case.
Deleted any other sat nav apps (USA) that I had installed in my phone.
Deleted ALL other apps from my phone except the UK sat nav app.
Tried with the phone fully charged or indeed charging during the driving.
Totally deleted the sat nav app and then re-downloaded from fresh.
My phone is a brand new 3GS 16GB bought from o2.
Please help me