Battery health problems and deteriorated by 24% in just two weeks - why?!!!!!
My iPhone SE is running 11.4.1 and I had a new battery installed about one year ago.
Two weeks before moving house and being vigilant with my usage as I was unable to charge it for a couple of days I checked the battery health which was 87%
live checked it probably monthly and it went down in the last 6-8 months gradually.
I noticed today and yesterday that it had drained quickly so I’ve just checked and it’s now 63% and it says it’s significantly degraded and still at peak performance!
Why all of a sudden has this happened when it has barely been used due to moving, unpacking etc!?
The reason I didn’t update the iOS to 12 was because the shop where I bought the phone from told me not to as it would drain battery. So I listened and didn’t do so. Should I update to the latest iOS now, will it make a difference? Although I don’t yet have computer set up to do a back up yet?
Advice greatly appreciated. Thanks
iPhone SE