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On my old Android 2.3 (Gingerbread) phone there was an option to keep my phone awake when the USB cable was connected. But on my Samsung Galaxy S II, (4.0.3) I can not find it. Does the option still exist?

EDIT: If I go to settings > Developer options, then my options are:

USB debugging
Allow mock locations
Desktop backup password
strict mode enabled
pointer location
show touches
show screen updates
show CPU usage
Force GPU rendering
Window animation scale
Transition animation scale
don't keep activities
Background process limit
Show all ANR's

... and nothing else.

I just went to software update > check for updates, and was told "no update available".

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3 Answers 3

up vote 9 down vote accepted

I have checked on my two Ice Cream Sandwich Devices (Stock Xoom and Droid 3 running CM9 Beta). I have, under Settings > Developer Options a Stay Awake option. Which keeps your device awake when charging.

Screenshot of Droid 3 Developer Options Window in CM9

This will work if your device charges over USB (my Xoom does not, for instance).

However, should this option not be there, we can turn to apps for help!

StayAwake looks like it could be a solution to your problem.

WakeLocker for Galaxy S also looks to be a solution.

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The Samsung Galaxy S II does not have this feature, and never has, because of its AMOLED screen.

They burn (like CRTs) if they have the same picture on the screen for too long. For some reason apps can still lock the screen on, but you can't do it from settings.

(My Samsung Galaxy S II has burn in from the notification bar.)

You can use StayAwake, just don't forget to turn it off.

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On my Galaxy Nexus it can found under

Settings/Developer Options/Stay Awake.

YMMV.

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