Recently my I phone 5 remains heated up and battery drains too fast. I have tried restoring the phone, hard rebooting and making all suggested actions on net. pls help.
At this point it sounds like you done everything that might be suggested. Think you may need to set up an appointment to have it checked out with Apple or your closest apple store.
You should probably get it checked at Apple or any third party repair shop (If you don't have the warranty). The problem seems to be hardware related and its usually a dead battery.
Tapped from my Black & Slate iPhone 5 using Tapatalk.