Why is my HTC one acting on its own?

[AC Question]

I have had my phone for a while and its been doing weird things lately. It will turn auto- rotation back on after i have shut it off multiple times, it turns airplane mode and car mode on by itself, and when im making call it will turn my speaker phone on automatically and then shut it off. i already tried factory resetting it, what else can i do to fix this?

 

[belodion]

Are you using an SD card? It may be causing trouble.
Also, after Factory Resetting, did you untick/uncheck Auto-Restore Apps? If not, try Safe Mode diagnostically.