If you are experiencing Bluetooth® connection issue on your Wi-Fi® device, make sure you are using the latest iPhone software and that your navigation device has installed the latest available updates. See: TOMTOM NAVIGATION DEVICE SOFTWARE RELEASE NOTES
To check the iOS version currently installed on your iPhone, open Settings on your phone, then tap General , and finally Software Update to see if iOS is up to date or not.
If your navigation device does not have the latest update installed, please perform the following steps to retain the Bluetooth® functionality on your device.
Update your devices
The software update for your navigation device is offered when you open the Main Menu and select Settings , then Updates . Choose the updates you want to install, then select Update now .
For step-by-step instructions and more information on updating your device, see: Updating your device using Wi-Fi®
Then, check if there’s a newer version of iOS on your phone and install it if available.
Set up the pairing between your iPhone and your device
First, on your navigation device, open Settings > Bluetooth > iPhone and select Delete Phone .
Then, on your iPhone, close the MyDrive app.
Go to Settings > Bluetooth on your iPhone, and Forget your device if it shows up in the list of previously paired devices.
Turn your phone off and on again, and finally pair your iPhone and your navigation device as if it was for the first time.
For step-by-step instructions and more information on pairing your phone, see: Connecting your phone for data, hands-free calls, and smartphone messages