iPhone 7 plus batter dies
I replaced the battery to my iphone but it still dies fast, why?
I’d start with going to Settings>Battery>Battery Health
Check your maximum capacity, if you replaced it recently, it should still how 100% or high 90’s. If not, try a factory restore, https://support.apple.com/en-us/HT201252
If your maximum capacity is 100% or high 90’s take a look at your battery usage by app. See if it’s a particularly power hungry app. Try visiting the app store and updating your apps. that could help. Visit https://www.apple.com/batteries/maximizi... for more tips!!
Where did you get the battery from it can be just bad quality.