Hi folks from a complete newcomer and appologies to admin if this is in the wrong place , i have a BT Mobile internet dongle and its PAYG but it just as well be PAY Dont Go as its awful signal wise i drove nearly all of west cornwall looking for s signal to photograph thunder and lightining storms lastnight and didnt get signal once in 4hrs , need help fast please folks as we have another 2 nights of poss photographic oppertunitys , any help to unlock this so i caan add another sim would be very gratefully received many thanks in advance