Changing the System Language:

  1. While viewing the home screen, press the "Menu" key
  2. Tap "System settings"
  3. Select "Language & input" > "Language"
  4. Select the desired language

Setting the Date and Time:

  1. From any of the home screens, press the "Menu" button
  2. Tap "System settings" and select "Date & time"
  3. To set the time and date manually, unmark the "automatic date & time" and "automatic time zone" check boxes
  4. Set the desired time and date (and date format)

Changing the Ringtone and Notification Sound:

  1. While on the home screen, tap "Menu" and go to "System settings"
  2. Select "Sound"
  3. Tap "Phone ringtone" and select the desired ringtone from the list
  4. Tap "OK"
  5. Return to the "Sound" menu and select "Default notification"
  6. Tap the desired sound and press "OK" to confirm the selection

NOTE: To set a ringtone to a single contact:

  1. Tap the "People" icon located on the home screen
  2. Select the contact that you wish to set the ringtone for
  3. Press the "Menu" key and select "Set ringtone"
  4. Select the desired ringtone and press "OK" to confirm

NOTE: custom ringtones can't be set to contacts saved on the SIM card

Enabling / Disabling Touch Sounds:

  1. From the home screen, press the "Menu" button
  2. Tap "System settings" > "Sound"
  3. Mark or unmark the "Touch sounds" check box to enable or disable this feature

Enabling Dolby Sound Effects:

You can enable Dolby Digital Plus in order to enjoy better sound effects while listening to music or watching a video. To do so:

  1. Press the "Menu" button while viewing the home screen
  2. Select "System settings" > "Sound" > "Profile"
  3. Tap the icon depicting an "On / Off" power button, in order to enable or disable Dolby Digital Plus

Changing the Wallpaper:

You can set a custom wallpaper on your home screen, as well as your lock screen. To do so:

  1. Press "Menu" while on the home screen
  2. Select "Wallpaper"
  3. Choose whether you wish to change the wallpaper for the "Home" screen or the "Lock screen"
  4. Select the source of the wallpaper, such as "Live wallpapers", "Gallery" or "Wallpapers"
  5. Browse for the desired image and select it
    • If you wish to set an image from the "Gallery", you will need to crop the image and then press "OK"
    • If you've selected a "Live wallpaper" or a "Wallpaper", tap "Set wallpaper" to confirm your selection

Setting a Lock Screen:

  1. From the home screen, press the "Menu" button
  2. Tap "System settings" > "Security"
  3. Select "Screen lock"
  4. Choose the method of screen lock:
    • None: this option disables screen lock
    • Long press: this option enables a screen lock that can be unlocked by performing a "touch and hold" gesture
    • Face Unlock: this feature allows you to capture photos of your face using the front-facing camera. The smartphone uses face-recognition technology in order to unlock the smartphone once it detects your face. NOTE: this feature also requires you to set a pattern or a PIN, in order to have a secondary unlocking method if face detection fails
    • Pattern: You can create a lock screen pattern that you draw on-screen with your finger, in order to unlock the device
    • PIN: enables a numeric PIN-protected lock screen
    • Password: enables a password-protected lock screen

See More: ZTE Grand S Flex: Tips on How to Personalize Your Device with Ringtones, Wallpapers and More