Using Samsung Galaxy Tab A 10.1 with latest Nougat rom and this has been a problem since I have owned the tablet. Previously had Asus Transformer Prime and never had the problem with same bluetooth devices. Pair most frequently to a bluetooth speaker. After several hours or a reboot, all paired devices on Samsung tablet are lost. They no longer show in the Bluetooth section under paired devices. If I turn on the bluetooth speaker, I am prompted on tablet with a pairing request and the options of OK or CANCEL. Tapping OK connects as expected and audio works. However if I turn off the speaker or walk out of range, then come back several hours later or reboot the tablet, I must go through this whole process again because the tablet lost the paired device, when it should just auto-connect. I haven't tried a factory reset yet because I was hoping someone would have a great idea to save me the trouble. Everything else on the tablet is working fine.