Hey guys, so I have updated to iOS 12 on my iPhone 6S, I've replaced the battery a few weeks ago and now in the battery health tab it shows me that it's unable to determine the battery's capacity and that I need to service it. Battery life worsened a lot, I get 3.5 hours tops of screen on time, and that's just normal usage, compared to iOS 11 I would always get around 6.5 hours of screen time. When downgrading back to iOS 11 everything is normal again, battery health shows that it's at 100% and I get good battery life again. The battery is not original, I thought it might have a fake gas gauge circuit spoofing the batterie's capacity, but when I connect it to my computer Coconut Battery does show correct info of it, it was at 99.6% few weeks ago, now it's at 99,5%. Same thing happened to my cousin's phone, battery was also not original. Does anyone else have this problem? I'm wondering if they'll fix this or they just stopped supporting aftermarket batteries.
