I have had two other iPhones, the 4 and 4S. Other than a learning curve, I have had no real problem.
I am now using my third iPhone 6Plus, and the problems have been present in all three phones.
First, I can be typing, browsing, doing about anything on the phone, when suddenly audio will start to play,totally without warning.
I thought this might have been do to my body heat as I leaned too close, or my fingers became too near the screen. Then, one day I was in another room of the house using my bluetooth headset, when the music started, again without warning. I had removed the one song from my phone to avoid this, but obviously this only allowed radio apps to launch.
A rep at AppleCare suggested I do a factory restore of the phone, rather than restore from the latest backup from my old phone, in the thought the backup might have been corrupted. This made no difference. This was Phone Number 3, but I have had the same issue with the two others.
Also, I find that, when I have the phone plugged in and am using the headphone jack, the sound cuts out if I'm holding the phone. It takes some jiggling to bring back the connection. I am wondering if the thinness of this model has made the jacks weak.
I believe I'm very careful with my equipment, or at least try to use caution; but this situation is causing me to feel a little bit unsure; and I almost hate to admit I'm on my third phone, thanks to the Apple Care plan.
Does anyone have any ideas for me? I'm feeling a bit accident-prone right now.