No way to increase an iPhone battery health.
Start worrying when your battery maximum capacity value goes down close to 82-80%, and backup your device on a regular basis.
Regards
Giulio
1 reply
How to check that any changes had been mase to iphone to oncrease the battery health, or is the battery health boosted or not, pls guide me. I want to ask bcoz my iphone is used 4 years but battery health is only 91%, so can u tell real battery healt