6s Battery dies after about 4 hours of being fully charged
I've only had my iPhone 6s since February (was hoping to hold out and keep my 5s until the 7 came out but I got impatient...) but for the past couple weeks the battery life has been draining extremely fast. I'm on my phone a lot for work, but never have seen my battery drain as quick as it has last two or three weeks. I'm good about preserving my battery but turning wifi off when I'm not at a place with WiFi, my location services are set to only work when in the specific app; I'll turn my screen brightness down; etc.....
What I found odd was when checking my battery usage, the home and lock screen says it uses a majority of my battery life or at least in the top 3. Almost as if I didn't have my phone locked ever. It would also show my battery usage down to around 5% 4 hours after its last full charge.
I brought my phone into the Genius Bar and their battery diagnostic showed exactly what I told them. They said their was nothing wrong with my battery and it was showing as in perfect condition, but that on average my phone has full battery between 6-9am and is dead 4-5 hours later. The home and lock screen also confused the tech who helped me and went through checking to make sure I even had a passcode set and what my settings were if that was draining my battery. In the end they figured it must have been a firmware problem so they replaced the firmware, I reloaded everything back onto my phone via the cloud and my phone should work fine.
Well, it's been about a week since I had my phone fixed and the battery is still draining between 4-5 hours after a full charge. I guess I wanted to come here to see if there is anything I could do on my own before making another appointment or calling for tech support. I also read something about extreme heat causing battery damage-- and wondered if that could have happened when down in Florida. But if it did overheat without my knowledge, I assume that would have shown up on Apples diagnostic, right?
iPhone 6s, iOS 9.3.2
