Why does my Samsung S4 drain rapidly?

[AC Question]

When idle and the screen is locked, the battery in my S4 will last for days and hardly drain at all, however as soon as I unlock the phone the battery will start to drain about 1% every 30 secs. I have purchased a new battery, cleared the cache, reset the phone to factory setings but theres still no hope. Anybody have any ideas what this could be. I have googled this but common problems seem to be the battery drains whether its on or if its locked where as mine only drains once I unlock it. Any help would be much appreciated, thanks in advance.

 

[belodion]

Use the phone normally for a day, then post a screenshot here of your battery usage stats. We'll take it from there.

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