I have two issues with Bluetooth.
1) it will periodically forget a Bluetooth device. Meaning it no longer shows up as a device that I've used and have to repair. It may take a month or so but it does do it. This is quite annoying on the Microsoft Band as it treats it as a new phone and I have to factory reset that device to connect to a new phone. It's also happened to my car.
2) it will not keep a connection to my Microsoft Band 2. After about 12 to 18 hours it stops being connected and I have to reset the phone to get it to work. Resetting the Band does not help. Anyone have issues with other Bluetooth devices?