music player replaces photo on lock screen
iPhone 7. iOS 10.3.3
My lock screen photo is frequently replaced by the black screen music player. I do not play music, use headphones, visit websites for video or audio. It usually happens when my battery is between 90-100% and if I don't notice it right away [overnight] I'll awaken to a 35% batter level. I can temporarily get it off lock screen by a reboot. I eliminated all my ringtone apps, and that didn't help. But when I got rid of the iTunes app, it went away for a few weeks. Now it is back.
I am getting very frustrated as it is potentially damaging my battery and is a real pain!
Thanks,
pa79th
iPhone 7, iOS 10.3.3