I upgraded to iOS 26 a few days ago, and I am starting to regret it. I have a SE third generation now running iOS 26. The battery runs down to 20% a lot faster than it used to. What do I need to shut off or change in order to keep my battery from running out so fast?
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Mine is the same
My iPhone is an SE3. I'm experiencing the same problem: since updating to iOS 26, the battery drains very quickly. This happens many times. Restarting the phone improves it, but after a short time, the battery drains rapidly again.
These days, I have to charge my iPhone at least 3 times a day. It's terrible. I don't know if Apple is interested in these issues or if they're just overlooking the problem because our model isn't a flagship model.
Sometimes this happens when you first do an update
Sometimes this happens the first couple of days after our new update. This is kind of normal behavior. I have an SE third generation also running iOS 26.2 and I think this may have happened to me a couple of times but on this update, I don’t seem to see it. I think if you give it a couple of days it should straighten itself out. Also, one of the things you can do is make sure you turn off the background app refresh settings. Hope this helps.