Hi. I’ve been getting extreme amounts of battery drain from my iPhone SE. It’s currently on iOS 12.2 but I’ve noticed this behavior since iOS 11. I attributed it to a worn battery and got the battery replaced last January at my local apple store. Alas, the battery drain is still there. When I talk about battery drain I mean somewhere in the neighborhood of 45-50% draining overnight. If I leave my phone with 50% charge when I sleep, 8 hours later the phone’s dead. I’ve gotten the battery replaced again last March and it’s still exhibiting the same behavior. I don’t know what’s causing the drain. I’ve factory reset the phone and it has no apps right now. I remove my sim and keep it on airplane mode at night (which only helps a little bit) to no avail. I’ve turned off every setting I can: no raise to wake, no location services, no background app refresh, reduced animations and reduced transparency on, shake to undo off, vibration off, night shift off, wifi off, bluetooth off, cellular data and wifi assist off, iCloud off, all notifications for all apps completely off, my email and any other accounts are all on manual fetch, Siri and siri suggestions off, automatic date and time off, screen rotation off, screen time off, auto-lock to 30 seconds, and low power mode on (even at 100%). I’ve done resets, reboots and factory data wipes but still even with all these, I still experience excessive standby draining in daytime or night time. It has gotten so bad that I’ve been using a cheapo samsung phone in the mean time as I figure out what to do with my iPhone. I’ve never dropped it hard (it’s been in a case in the 2 years since buying it new), no water damage, no other problem (screen, touch id, camera, mic, cell antenae, speakers are all fine), and I’ve only used the apple charger that it came with in te box. I didn’t play intense games on it when it was new and I don’t excessively overcharge my phone. It only started exhibiting this since June of last year and I’ve gotten the battery replaced thrice since then (one in august, one last jan, and one last march). I am at a loss and don’t know what to do with my phone. I don’t have apple care and my phone is out of warranty. The apple store employees insist that I might not have used an apple charger and that might be the thing to blame despite me reasoning with them that I’ve never used any other charger than the one from the box. Photo below shows my battery health (5% degradation in a month) Other photo shows my phone draining. Had it charged to 100% and then within an hour of me removing the charger with low power mode on and cell data, wifi, bluetooth off its now drained 13% all on standby and no screen on time. Screen off time is also 0 minutes I really don’t know what causes this and how to fix it. My brother says that it maybe a broken IC port (I don’t know what that is) but my phone charges normally and is easily identified when plugged into my macbook pro. Any help is greatly needed and appreciated.