After update, check your settings

[blg923]

I discovered after updating to 4.1.2, my screen would not sleep while charging. Turns out, the developer options were enabled and the setting stopping the screen from sleeping while charging was checked. I am certain this was not the case prior to the update.

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[joe_fresh]

Wow. Just thought this was normal. Thanks

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[blg923]

Looks to me like a glitch in the update...I'd be interested to know how many others have found it...should be everyone.

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[PW_Irvine]

Didn't happen to me. Setting unaffected.

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[Zman1001]

I had this happen to me too. I wondered why when my phone was charging, it would always stay on, even though I had it set to turn off after 30 seconds. Never really tried to figure it out, but I will go check those developer settings and see if this corrects the issue for me