Blocking / Unblocking Phone Numbers:

  1. While viewing the home screen, tap "Phone"
  2. Go to the "Call Log", then tap and hold the phone number you wish to block
  3. Tap "Add to block list" > "OK"
  4. To unblock a number, tap the "Menu" icon depicting three vertical dots
  5. Tap "Block list"
  6. From the list, tap and hold the desired number
  7. Select "Remove from blocked list" > "OK"

Forwarding Calls (Unconditional):

  1. While on the home screen, swipe the "Notifications" bar down
  2. Tap "Settings"
  3. Go to "Call settings" > "Call forwarding"
  4. Tap "Always forward" and select "Enable"

Forwarding Certain Calls Only (Conditional):

  1. Swipe the "Notifications" bar down
  2. Go to "Settings" and tap "Call settings"
  3. Tap "Call forwarding"
  4. Select to "Forward when busy", "Forward when unanswered" or "Forward when unreachable"

Disabling Call Forwarding:

  1. Access the phone's "Settings" menu
  2. Tap "Call settings" > "Call forwarding"
  3. Tap "Always forward" and select "Disable"

Enabling or Disabling Caller ID:

  1. To permanently enable or disable caller ID, tap the "Phone" icon while on the home screen
  2. Press the "Menu" icon and tap "Settings"
  3. Scroll to, and tap "Additional settings"
  4. Tap "Caller ID" and press "Hide number" to disable the feature
  5. To enable Caller ID, tap "Show number"
  6. To disable Caller ID on a call-by-call basis, tap "Phone" from the home screen
  7. Enter "*67" without the quotes and enter the phone number you wish to call
  8. Tap "Call"

In-Call Options:

While in a phone call, you have a number of options at your disposal that can be easily enabled or disabled, as described below:

  • To enable the speakerphone, tap the "Speaker icon" located in the lower-left area of the display
  • To mute the microphone, tap the "Microphone" icon
  • To place the current call on hold, tap the "Hold" icon (the third one in a row, next to the microphone icon)
  • To add another call to the current one, tap "Add Call" (depicting a phone next to a "+" sign)
  • You can take a note while in a call by tapping the "Note" icon located in the lower-right area of the screen
  • The orange / brown bar at the bottom of the screen contains the "Keypad" and "Contacts" icons, flaking "Hang up"

Call Waiting and 3-Way Options:

  • While in a phone call, you can tap the "Add Call" icon to put the current call on hold and call another number
  • During a phone call, you can tap "Answer" to accept the call and put the current one on hold
  • To switch between the current call and the one on hold, tap the "Switch Calls" icon (third one left-to-right, next to the microphone icon)
  • To combine both calls into one, tap the "Merge" icon (located at the right of the "Switch Calls" icon)

Enabling Speed Dial:

  1. From the home screen, tap "Phone"
  2. Press the "Menu" icon and tap "Speed dial"
  3. Tap the desired speed dial key pad number and select the contact you wish to associate with it
  4. To use speed dialing, tap and hold the desired speed dial number until the call connects

See More: ASUS PadFone X (AT&T): Block, Forward and Manage Calls