Phone turns volume down by itself

[Daisyboo01]

Hi my phone keeps turning itself down then says alarms only end now when it does this I can't turn volume up or put screen in rest mode please help 

[DominantCub72]

My phone does the same thing but it fully mutes itself. I have an Xperia l2 but the l2 I had before this one had the same issue just not as bad. This is quite frequent and happens after I turn the phone off (not fully) and after I use headphones sometimes. Restarting hasn't helped. It's a good phone but this is really frustrating. 

[Leonyenoom]

I had a similar experience when I was playing music on my phone. The volume would drop now and then. I had downloaded an app for a compás and this was the cause. I deleted the app and the problem was solved.