Hey all, I visited this thread tonight because I had just charged my batter this morning, and by tonight it was almost on low batter warning. I looked at the apps under battery usage and Youtube was at the top stating 90% usage it also said Audio under it. Here are the details that suggest there is something wrong with the app.
1. the app wasn't even running in the app switcher
2. I don't use background app refreshing it's totally disabled as well as location services and most everything else I don't use, and is known to be a battery killer.
I had bee using Youtube on the Mac, but not the phone, i wonder if there is some kind of bug where if you use it on one device it tries to do it on the others too.
The Other thing to note is, I never leave apps running on my phone, have auto lock set to 1 minute only use notifications for things I need etc.
Frog Now, I have deleted Youtube from the phone and will wait for iTunes to show me there is an update on the mac, then re install if i see bug fixes.
Device info, iPhone 6 Verizon wireless 16 GB iOs 9.1 clean install only have about 18 to 20 apps and a few audio books on the phone as far as content.
Hope I gave enough information here, if someone has more information let me know. Thanks