If you are having problems on the bluetooth of your Samsung Galaxy Note Pro 12.2 after updating it to 5.0.2, then here are some ways to fix this problem.
How to Fix Bluetooth Issues on Samsung Galaxy Note Pro 12.2 After 5.0.2 Update
Step #1: First of all put your device on Airplane mode, wait for 2-3 mins then connect your logitech Keyboard with bluetooth.
Step #2: Try to connect different manufactures keyboards and mouses.
Step #3: Perform a factory reset using recovery menu, first clear system cache then factory data reset.
Step #4: Try to flash patches to fix bluetooth connectivity.
Step #5: Downgrade your OS if your device is running 5.0.2, flash Android KitKat 4.4 or the pervious one you were using on which there was not bluetooth issues.
If none of this works for you then you have to wait for official solutions from Samsung, either they will roll out a new update or the’ll post a solution on their official forum. In the mean While you can follow these threads so you can track solutions.