Blocking and Unblocking Calls:

  1. While on the Start screen, swipe down from the top to reveal the "Action Center"
  2. Tap "All Settings"
  3. Scroll to and tap "call+SMS filter"
  4. Tap "Accept" and press the "Windows" key to go back to the start screen
  5. Tap the "Phone" icon
  6. Touch and hold the entry you wish to block
  7. Tap "Block number" > "OK"
  8. To unblock a number, tap the "Menu" icon
  9. Tap "Blocked calls" > "Blocked numbers"
  10. Tap and hold the number you wish to unblock
  11. Tap "Unblock"

NOTE: Blocking numbers will prevent them from connecting calls with your device, but this feature doesn't affect phone calls received via third party applications.

Forwarding Calls:

  1. Tap the "Phone" tile from the start screen
  2. Tap the "Menu" icon
  3. Go to "Settings"
  4. Tap the "Call forwarding" to enable the feature
  5. Tap the "Call forwarding" field and enter the phone number you wish to forward calls to
  6. Tap "Save"

Setting Up the Caller ID:

  1. Tap the "Phone" type
  2. Press the "Menu" icon
  3. Tap "Settings" > "Everyone"
  4. Select the desired option

Making and Receiving Calls:

  1. From the start screen, tap the "Phone" icon
  2. Tap the "Keypad" button
  3. Enter the phone number you wish to call
  4. Tap "Call"
  5. If answering a phone call, tap "Answer"
  6. Tap "Ignore" to reject the call
  7. To reject the call and respond with a SMS, tap "Text reply"

Call Waiting and 3-Way:

  • While in a phone call, tap "Answer" to place the current call on hold and answer the incoming one
  • To start a conference call, tap "Merge calls"
  • To separate calls, tap "Private" and select the desired call. Then, tap "End call"

In Call Options:

  • To adjust the in-call volume, press the "Volume" buttons
  • To enable or disable the speaker, tap the "Speaker" icon
  • Tap "mute" to enable or disable the microphone
  • Tap "Hold" to put a call on hold
  • To start a conference call, tap "Add call"
  • For more in-call options, tap the "Options" icon

Enabling Speed Dialing:

  1. From the Start screen, tap "People"
  2. Scroll to and tap the contact you wish to assign to speed dialing
  3. Tap and hold the desired number
  4. Select to "add to speed dial"
  5. To access the speed dial, tap the "Phone" icon while on the start screen, tap "speed dial" and select the contact
  6. To remove a contact from speed dialing, tap and hold it, then tap "Delete"

See More: Nokia Lumia 635: Block, Forward and Manage Calls