This is useful if you need to reject a call during a meeting. Sound < General > Silent mode – Allows you to mute all sounds (including call and notification ringtones) except the audio from music and videos and any alarms you have set. You can mute media and alarm sounds in their own applications. Vibrate – Allows you to set your phone to vibrate when you receive an incoming call. Volume – Allows you to set the volume for ringtone, media and alarm. If you uncheck the option "Use ringtone volume for notifications" you can set the volume for incoming calls and notifications separately. < I ncoming calls > Phone ringtone – Allows you to set your default incoming call ringtone. < N otifications > Notification ringtone – Allows you to set your default notification ringtone. < F eedback > Audible touch tones – Allows you to set the phone to play tones when using the dialpad to dial numbers. Audible selection – Allows you to set your phone to play a sound when you touch buttons, icons and other onscreen items that react to your touch. Screen lock sounds – Allows you to set your phone to play a sound when locking and unlocking the screen. Haptic feedback – Allows you to set your phone to vibrate briefly when you touch the soft keys and on certain UI interactions. Display Brightness – Adjust the screen brightness. Auto-rotate screen – Set to switch orientation automatically when you rotate the phone. Animation – Set to display an animation. Screen timeout – Set the time for screen timeout. Display font – Change the display font. Gesture Adjust the gesture settings for home screen, incoming call, alarm or video player. Rearrange items - If you checkmark this, you can relocate an item to other home screens by touching and holding an item and tilting the device. Mute - Checkmark this to mute the incoming call by flipping the phone over while the phone is ringing. Snooze (Stop) - Checkmark this to snooze(Stop) the alarm by flipping the phone over. Pause - Checkmark this to pause the video by flipping the phone over. Location & security Use wireless networks – If you select Use wireless networks, your phone determines your approximate location using Wi-Fi and mobile networks. When you select this option, you're asked whether you consent to allowing Google to use your location when providing these services. Use GPS satellites – If you select Use GPS satellites, your phone determines your location to street level accuracy. Set up screen lock – Set an unlock pattern to secure your phone. Opens a set of screens that guide you through drawing a screen unlock pattern. You can set a PIN or Password instead of a Pattern or leave it as None. When you turn on your phone or wake up the screen, you're asked to draw your unlock pattern to unlock the screen. Set up SIM card lock – Set up SIM card lock or change the SIM PIN. Visible passwords – Select to show passwords as you type them or deselect to hide passwords as you type them. Select device administrators – Add one or more administrators. Use secure credentials – Allows you to access secure certificates. Install from SD card – Choose to install encrypted certificates from your SD card. Set password – Set or change the credential storage password. Clear storage – Clear credentials for all content and reset password. Applications You can view and manage the applications. Unknown sources – Default setting to install non-Market applications. Warning: Depending on the applications you install, the mobile phone may not operate correctly and could be illegally used to establish your location and gain access to personal information via the Internet. To protect your phone and personal data, only download applications from trusted sources such as Android Market. Manage applications – Manage and remove installed applications. Running services – Check services that are currently running. Storage use – View storage used by applications. Battery use – See what has been using the battery. Development – Set options for application development. Accounts & sync < General sync settings > Background data – Permits applications to synchronise data in the background, whether or not you are actively working in them. Deselecting this setting can save battery power and lowers (but does not eliminate) data usage. Auto-sync – Permits applications to synchronise, send and receive data to their own schedule. < S ocial+ update settings > Social+ settings – Permits to set up optimised social network widget environment. < M anage accounts > List of all Google accounts and other accounts you have added to your phone. If you touch an account in this screen, its account sync settings screen opens. Privacy Change the settings for managing your settings and data. Back up my data: Set to back up your settings and application data to the Google server. Automatic restore: Set to restore your settings and application d...