Exactly the answer I expected ... and I'm not looking for a money payback...:-( but rather attack than to answer the actual question, both problems with wifi, bluetoot and 4G are recurring question ... in one stable version the problem away, but in the next stable version it's back...
All my headset has problems now, my qy7, qy8, bluadio +, MI band 1S my car stereo lose regularly connection MIUI 7.1.2.0 ... I have two phones ... both with the same problem, so the problem must be in the phone / MIUI ... everything is cross-tested on my old sony z1 compact with broken screen, minus the MI band 1S ... and on the Sony all the peripherals works without any problems, easy, stable and fast pairing... and what does Oh.wait means, or is it...or wait ... all I'm saying is I can not flash my phone every time there is a problem, I expect that we will be taken seriously, that they take more care of the real problems and that you just constantly extinguish the fire, with new models, competitions and other chitchat ...I use my phone 24-7-365 private, on work, fitness, tracking...so I need it to work...