My iPhone 7+ has been getting much worse battery life over the past few days, and I’m not sure why. I used to get 7-9 hours of screen-on time easily, and now I’m getting maybe 5-6 at most. It’s draining percentage much quicker than it used to. My usage has not changed at all. I’m thinking iOS 11.2.2 might be the culprit, as the problem seems to have come about around the same time, but I’m not sure why that would cause the problem since it was only released to fix the security vulnerability. I upgraded to the 11.2.5 beta to see if that would help, but it didn’t. Any advice?