Iphone XR battery drain
Guys it’s been such a headache for almost a month now. Coming from a 6s with no such issues for 2& half years. My brand new iPhone XR was barely 6 weeks old and battery life was amazing. Could go for 40+ hours with a single charge without a doubt. I forgot to turn off automatic updates feature and ever since 12.3.1 was installed my phone drains 1% per 15 minutes in both standby and airplane mode regardless day or night. Previously it would drain 3% tops overnight for example and now if I sleep at 10pm and wake at 6am it would literally drain 30+. Tried going through so many apple discussions and reddit forums. Did try everything from a soft restart to a DFU reset. The problem still exists. And surprisingly none of these single discussions (way back since 2013) have a proper remedy or an aftermath addressed by the original person of the thread. Are any of you facing a problem such as mine?
Hope to update to 12.4 via iTunes as soon as it’s released to the public.
iPhone XR, iOS 12