Chosen Solution
I recently replaced my iPhone X battery. It worked as expected on iOS 13. Since updating to iOS 14, now the battery’s health registers as significantly degraded, Maximum Capacity is blank, and the battery life is absolutely garbage. Instead of 1 charge a day, I’m changing a minimum of 3 times. I’ve already tried draining and refilling the battery leaving it on the charger for a few hours after 100%, same issue. I’m hoping someone can help me out. Thank you.
That model is soon to be three years old so I wouldn’t be surprised if iOS 14 is more demanding that 13 was and that the battery may need replacement. If you have a windows computer you can download a free program called 3utools. You can use that to check the battery’s max capacity. If you’re on Mac, download coconut battery. Either one will also require you to plug the phone into the computer. If it’s below 85%, I recommend replacement as that’s when people typically notice battery life isn’t normal. You can bring it to a local repair shop or buy a DIY kit on ifixit.
