Hello, Here is my problem, Just changed my iphone at the genius bar and got a new one (for camera issues), just one day after using my new iphone 6 Plus I notice some wifi issues. I always have weak signal, even when at home, I don't have wifi in my kitchen (I did previously), and so on... Today I just noticed that my bluetooth connection is weak too... I cannot use my headset anymore, the signal loose, sound interrupted all the time,... On the other hand, the phone calls seem to be working well, so my questions are: 1) Do you know if the antenna for calls and for wifi and bluetooth are the same or separated? (In other words, is it normal that wifi/bluetooth is not working but calls are?) 2) How can I prove it / show the evidence at my Apple meeting with genius bar? (don't want them to say it's my wifi, it' my headset, etc) 3) Is there a way to diagnostic a weak antenna other than what I did? Thanks a lot for all your answers, as always you're the best when it comes to Apple!