As reported in a couple of other threads, I've discovered that when I insert my Telenor 3G SIM card, GPS loose all reception.
I had my TPT on service last week for a non functional GPS, it was returned to me monday with No Faults Found. I started up, downloaded Chartcross GPS TEst, and had up to 17 sattelites in view and 14 in use sitting at my desk. I had this within a few minutes.
Then I inserted my SIM card and entered pin to unlock, and within a few seconds, all sattelites where lost. Not a single sattelite in view.
I removed the SIM and tried, still no sattelites in view. I did a cold restart without the SIM, and I was up and running again with full coverage on the GPS.
I have also tested with a SIM from the other major operator, Netcom; same result.
Since I haven't heard from anyone else reporting the same problem, I must assume that this is specific to my TPT, and I will send it in again. There's a three strike policy on the same fault in the consumer law, and If they can't fix it this time around, I can demand my money back or a new TPT.