Tips How to fix Samsung Galaxy Gio S5660 shutdown freeze randomly

If you are having problem with your Samsung Galaxy Gio runs in Gingerbread OS that automatically shutdown, freeze and randomly  reboot, try one of these:

. Install Green Power free or similar (juice defender, this you need to buy at least Plus version).
. Change your Wifi sleep policy to Never.
Go into Settings>Wireless and networks>Wifi settings
then press the menu button >advanced >wifi sleep policy


This is only a temporary solution until Samsung release for an update to fix such bugs on Samsung Galaxy Gio. If the problem still persist you can then do hard reset through settings> factory reset.
or by button combination in recovery mode. Just back all the data stored in your device first.
Press and hold Volume up+Center+Power Button, then select Wipe Cache/Factory Reset. Then select Reboot System.