Screen is set to turn of in 2 minutes. But this does not happen.

How to find the cause?

If relevant I have a Samsung Galaxy Tab P7500 running Android 3.2.


To clarify questions from the comments:

  1. Device is not connected
  2. I have numerous apps installed, so I can't check who is holding the screen by uninstalling it one by one. I want to find the possible malware by some tool or programmatically.
  • Have you checked the apps installed if any of them keeps it alive?
    – Izzy
    Aug 6, 2013 at 11:41
  • Is the tablet plugged in and you have "Keep screen on" enabled under development settings? Aug 6, 2013 at 11:48
  • Might help to post the listing of apps and services you have currently installed - one of us might spot it!
    – t0mm13b
    Aug 6, 2013 at 14:16

2 Answers 2


You can use Wakelock Detector to find out what app is causing the behaviour. Remember to read the correct procedure from the app's info:

How to use:

1 Install the app

2 Charge your phone above 90% and unplug cable (or just reboot the phone)

3 Give it a time (1-2 hours) to accumulate some wakelock usage statistics

4 Run “Wakelock Detector”, it will display wakelock statistics for you!

5 Check the apps on the top, if they show very long wakelock usage time then you found the cause of your battery drain!

*Note: Wakelock Statistics are gathered since Step#3

  • Wakelock Detector requires root, unlikely to help most users avoiding root to keep a secure phone. May 31, 2015 at 21:50

Prolly went to battery saver cause you had low battery and changed it automatically, youneed to change the amount of time back to what u want every time battery saver comes on, or dxit the settings in saver

  • Who or what is Prolly? And where from do you get the idea of "low battery"? If the battery saver would be the cause, wouldn't the screen rather turn of earlier than never? This somehow makes no sense.
    – Izzy
    May 10, 2014 at 12:36
  • Prolly probably means Polly want a cracker?
    – Michael
    Jun 30, 2014 at 2:30

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