Block Calls:

  1. Open the apps drawer
  2. Launch “People
  3. Tap “Menu” > “Manage contacts
  4. Tap “Blocked contacts” > “Add
  5. Perform one of the following:
    • To block a number: enter the number and tap “OK
    • To block contact:
      1. Select the contact by checking the box next to it
      2. Tap “Save
      3. To copy the contact information to a different account before blocking it, tap “OK

Unblock a Contact / Number:

  1. Access “People
  2. Tap “Menu” > “Manage contacts
  3. Tap “Blocked contacts
  4. Tap “Menu” > “Remove block contacts
  5. Select the desired contact / phone number to unblock
  6. Tap “Delete

Block Messages:

  1. Launch the “Messages” app
  2. Tap and hold the conversation exchanged with the number you want to block
  3. Tap “Manage options” > “Block contact

Unblock Messages:

  1. Open “Messages
  2. Press “Menu” > “Block list
  3. Tap the contact you want to unblock
  4. Tap “Menu” > “Unblock contacts

Forward Calls:

  1. Tap “Apps” on the home screen
  2. Access “Settings
  3. Tap “Call” > “Call forwarding
  4. Tap “Always forward
  5. Enter the phone number you want to forward calls to
  6. Tap “Enable

Forward Certain Calls (Conditional Forwarding):

  1. Open the apps drawer and access “Settings
  2. Tap “Call” > “Call forwarding
  3. Select to “Forward when busy”, “Forward when unanswered”, or “Forward when unreachable
  4. Enter the number to forward calls to
  5. Tap “Update

Cancel Call Forwarding:

  1. Go to “Settings
  2. Tap “Call” > “Call forwarding
  3. Tap “Always forward
  4. Tap “Disable

See More: HTC Desire 728: Block Calls & Messages; Call Forwarding