I have BT problems on iPhone 6 Plus since 14. I’m on 14.2 and when BT device shuts down sometimes the connection stays on and the sound is diverted to switched off device. Now happened to both my BT headphones and BT speakers. Never had this happening with the same devices before. Turning down volume all the way doesn’t seem to silence audio completely any more after the update, quite annoying. I have pop ups showing and lowering sound because apparently it is not healthy to listen with 3/4 volume, pop up says I’m using headphones, but i’m listening in BT speakers. I have never expected such poor update from Apple, always updated with confidence until now.