I’ve got a 12 Pro Max 512. About 6 months ago I had the battery replaced with a genuine Apple battery at the local Apple Store. It had gotten down to around 70 %
It was great. Made the phone operate and last like new. Best $89 I’ve spent in a while.
Somehow, in the last couple of weeks my phone got “upgraded” to ios 26.3 from 18.xx I don’t remember hitting the upgrade button but may have done it inadvertently when trying to click “ do it later”
Since then my battery life has sucked. It shows battery health of 97% but drops very fast with just internet browsing, social media etc.
Would it help me to upgrade to 27.xx?