I have done a Service for battery replacement for my iPhone 13 with in 25 days battery percent has down to 98%
hi bro, that is not normal. but when it comes to battery health measuring it 5 to 6 months once always helps. are you following charging practice as suggested in our video? like not draining to zero percentage frequently and charging it around 20%?
Also how is your usage? normal or heavy usage normally?