I am a new user and just bought my first pair of GTM yesterday.
After trying the devices for about an hour I notice the bluetooth configuration is different from other BLE devices.
I paired the GTM with my iPhone, then I walked away from it carrying my phone. The app sent me notification saying the GTM connection is dropped, which is expected. But when I come back to the GTM, I notice my phone and GTM did not reconnect. GTM LED is flashing and I need to manually unpair then repair the device. Is that expected?
Also, I notice when I used the App to pair the device, there is not system pairing dialog pop up like other bluetooth device I used. I talked to a bluetooth expert friend at work about that. He believed that means the device bluetooth is not bonded. I guess that is the reason once the bluetooth connection is dropped between the phone and GTM, we need to pair them again, because the phone system (iOS in my case) did not save the bonding information.