How to logout Gmail from samsung galaxy phones?

Go to settings and click "Wireless and Networks"..scroll down you can see "mobile networks" mobile can see a green tick mark on "use packet data" it and remove the tick will be automatically logout from gmail...If you want to login again kindly press the tick mark on "use packet data"

Did Android Phones have Front Camera?

Android phones does not have front camera.Reason is that Android phones does not support Video calling.That's why smart phones like sony ericson xperia x10 & htc desire with android 2.2 wont have front camera.Some people point out that video calling is possible in samsung galaxy series phoneslike galaxy S&galaxy S2 is using Android 2.2 &2.3 respectively.It is correct.Samsung galaxy series support 3G video call,but remember it is not the credit of Android.galaxy phones used extra UTMS technique for this.Any way Android 3.0(Honey Comb) version will be supporting video call from Android's own credit.

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