Ring volume

Hi just wondering if anyone can help. I've noticed I keep missing calls and yesterday when receiving a call I noticed that it rang loud once then lowered, I've since tested it, and every other ring lowers to a barely audible level. I've not got silent on pickup on but do have pocket mode on. I can't understand why.

Cheers for any help

Sent from my HTC 10 using XDA-Developers mobile app

from xda-developers http://ift.tt/2bjUZRX
via IFTTT