This may seem stupid but I must be missing something. Heres my example.

I have a Bluetooth GPS reciever and I can connect i to my phone, set up the external GPS and TomTom and the unit works great. Now lets say I turn off the GPS device for a day, then the next day I want to use it again, I turn on the GPS device but it seems it never connects back to the phone by itself. I have to delete the partner ship and set everything up again.

Am I missing something? Is there an easier way?