after using my iPhone 12 pro max 8 to 9 months my battery health is 91%, in 1 month it drained 3% ! Although i watch a lot of videos of how to charge iphone nowadays and not to use it while on charger. also i went to Jarir Bookstore and apple approved store in Saudi Arabia, they checked my charging cycles and they were chocked that in 8 months i only charged my phone for 260 times.. please take my case into consideration.