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iPhone Gets Hot, Battery Drains Rapidly – How I Fixed It | Josh

The short version: how I diagnosed and fixed an issue that was causing multiple iPhones and an iPad to get hot and drain their batteries. This is the nitty gritty on how I fixed the problem. Read on below for all the details, and how I let my Apple bias (almost) lead me away from the correct answer.

Troubleshooting Excessive Heat and Battery Drain Issues on iOS Devices

Problem: iPhone (or iPad) gets abnormally warm when not doing anything. battery drains much faster than normal. Rebooting doesn’t fix it.

Troubleshooting Steps:

  1. Follow all of Apple’s battery life troubleshooting steps. No, really. Do all of them. Don’t skip any. I know you’re a super smart nerd. Just do them.
  2. Go to Settings, General, About, Diagnostics Usage, Diagnostic Usage Data. Scroll through the list and see if there are any system processes with an abnormally large number of entries (a few entries is normal).

    ... read more at: http://tinyscreenfuls.com/2012/11/iphone-gets-hot-battery-drains-rapidly-how-i-fixed-it/