After I updated my iPhone 12 Pro to 15.1.1, and my Apple Watch SE to watchOS 8.1, the iPhone’s battery has been draining fast … but only after an initial connection to my Apple Watch. When I check my iPhone’s Settings > Battery and scroll down to see who the culprits is, it’s the App Store app. Anyone else having this fast battery-drain issue? In my case, the App Store app is using 45% of the battery, even though it is ‘alive’ for less than 3 minutes total. Before, with my identically very light everyday usage, my iPhone battery lasted 36 hours. Immediately after updating to 15.1.1 and 8.1, no matter what ‘repairs’ and reboots I try, it dies after about 10-12 hours. This almost seems normal-ish, until you look at Settings > Battery and see that the App Store app is running amok. Reboots and even a wipe and re-pairing of the watch do not help.
This did NOT happen at all under iOS 15.1 and watchOS 8 (or earlier). It has happened everyday since I updated to 15.1.1 and 8.1.
I note that these exact same symptoms were a big discussion topic on Apple’s own discussion boards back in 2017, and once again after the iOS 14 update. It seems to be mainly related to having the Watch connect to the iPhone, but that’s kind of the whole point of the Apple Watch for most of us. Any thoughts?