Hi Mike, can you give me more details please? Is anything displayed, and if so is it incorrect by a consistent amount?
Also, the next time you are connected. please go to Settings:Navigational Data:Show console. Wait a few moments for a few pages worth to accumulate, then tap ‘email messages’.
This will launch your mail program. Paste the clipboard into the message and send it. This will give me the raw NMEA messages to help diagnose the issue.
Bill