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Recently, my phone will suddenly shut down by itself. I tried pressing the power and home button but to no avail. It will only turn on back when i take out the battery and put it back again. Why is this so?

i have the same problem
i took my mobile to samsung customer service , and waiting !!![]()
i have the same problem
i took my mobile to samsung customer service , and waiting !!![]()



Hi guys .. I've checked my setting of wifi sleep mode which is already "NEVER" but my cell still getting the same problem " Auto Shut Down" .... can any 1 tell me pls what samsung service center told u about this prob ? thnx
+1It is the Wi-Fi sleep policy that is causing the phone to go into shutdown. The sleep policy suppose to switch back to mobile data (3G) when screen lock so as to conserve power.
So go to Setting->Wirelss and Network->Wi-Fi setting->Advanced (edit button) -> Wi-Fi sleep policy -> Choose "Never"
Or switch off Wi-Fi if you don't need at all if you have a 12GB data plan.
It works for me now, no more "deep" sleep mode for me.
Hope this helps!
I have the same problem, but I'm using a Galaxy Gio. Latest firmware installed via Kies.
I first thought it's a hardware problem, cause I needed to take out the battery and reinsert it, but you guys say it's an Android-thing. Anyway, I've just set WiFi sleep to never, and I hope it resolves the problem.![]()



I had the same problem. It would happen to my phone everytime i would leave it
connected to wifi. What i did to fix it was by disabling "use packet data" from wireless and networks from settings. Never had the problem since![]()


It is from a thread in one of the Andriod Forum, you may check to ensure if you have the Build number FROYO.DXKC1 , Android version 2.2.1 installed. My Samsung ACE is running like a war horse....Go to the Android Market and install a app called Android Booster, and it could very well cure your problem by optimizing and closing unwanted apps running in the background....