How to get Android device to Recovery Mode
To access Recovery Mode in Android devices do the followings:
1: Turn on the device holding Power + Home + Volume Up (or just Power + Volume Up ...
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The default feature of Galaxy devices lets you check the duration for last call, dialed calls, received calls, and all calls for both Voice and Video calls. Do as follows to find out the time you have spent talking with your Galaxy S3 or other Samsung devices:
1. Open Phone application on your device
2. Go to Logs tab
3. Press Menu Button and then select Call Duration
4. Now all the information about call duration is shown
5. To Reset the call duration, press Menu Button and then select Reset