Compatibility problems may occur with .vcf files created by different mobile phones and certain contact information may be lost after contacts are imported.
You can also use Bluetooth to share and import contacts.
How Do I Set a Song As a Phone Ringtone?
In Music, touch and hold the song to be set as ringtone, and then touch Use as phone ringtone.
How Do I Prevent Automatic Change of Screen Orientation When Rotating My Phone?
On the Home screen, touch 
> Settings > Display >
How Do I Set an Unlock Pattern?
On the Home screen, touch 
>Settings> Location&security>Setupscreen lock > Pattern.
How Can I Change the Input Method?
Touch and hold the area where you write text and then select the input method you prefer.
How Do I Stop the Song Playing in the Background?
Touch the notification bar, flick downwards to open the notifications panel, touch the music playing notification to go to the music playing screen, and then stop playing the song.
How Do I Return to the Call Screen?
While in a call, if you’re on another screen, you can touch the notification bar, and flick downwards to open the notifications panel. Then touch the current call notification to return to the call screen.
How Do I Create an Application Shortcut on the Home Screen?
Touch and hold an application icon on the application screen until the Home screen is displayed. Then drag the icon to where you want to place it and release your finger.
How Do I Hide the Keyboard?
Touch 
to hide the keyboard.
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