Factory Reset

Here's what you are looking for the Galaxy Gio S5660 User Manual you can download it here. It was not yet long time ago since the Samsung Galaxy Ace S5830 has been released and you will need to know how to navigate of its function.

Well, here's the Samsung Galaxy Gio S5660 User Manual
Samsung Galaxy Gio GT-S5660 mobile phone user manual is now available online and can be downloaded directly at Samsung website. This Samsung Galaxy Gio GT-S5660 manual comes in 130 pages on PDF document format (2.66 MB).

Samsung Galaxy Gio GT-S5660 User Manual PDF

Download here

If you'll find your Samsung Galaxy Gio S5660 Compass isn't working this solution will probably help the issue. Recently most users experience this kind of problem and consider it as a bug issue.

We have found an instruction guide by waqasshahzad1986 from xda-developer:
He noted that this solution will work on any Samsung Galaxy Gio versions. 

Make sure to backup your old memsicd before doing anything .

Method 1 : download this update , and copy to sd card(don't not copy in any folder)
Put your phone into recovery mode(turn off your phone , HOLD home button + power button toghether)
Apply update from sd , locate the copied file and press home button. reboot.

Method 2:

Download compas fix file
extract on your pc , and copy to sd card
now use root explorer copy and replace to system/bin (make sure its mount r/w)
and set permissions to all 9 boxes.. reboot , and you are done

UPDATED:Latest Compass Fix extracted from S5660ZCKP4-S5660ZCKP4-S5660OZHKP4 , compass fix .

http://www.mediafire.com/?2tbx9zhp2hnmc40

Thanks to mozgoder for letting me know

Instructions
Method 1 : download the update, and copy to sd card(don't not copy in any folder)
Put your phone into recovery mode(turn off your phone , HOLD home button + power button toghether)
Apply update from sd , locate the copied file and press home button. reboot.

You have to Reboot once more otherwise it will show wrong direction.

NOTE: if this update doesn't work for you , you can try this one
http://www.mediafire.com/?t1hszgxzb56os2b

This video shows a Samsung Galaxy Gio Compass has been already fix.



Hope this will help if you are too worry about what is going on with your Samsung Galaxy Gio compass apps.
You can visit the thread at XDA-developer.

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.