Create a Contact:

  1. Launch “Phone” and tap “+
  2. Add the contact name
  3. Tap the button under “Contact type” and select an option
  4. Tap the button under “Phone” and select a phone number type
  5. Enter the contact’s phone number and other optional details in the appropriate fields
  6. Tap “Save

Import/Export Contacts:

  1. Open “Phone
  2. Tap “Menu” > “Manage contacts
  3. Tap “Import/Export contacts
  4. Select to “Import from SIM” “Import from SD Card” or “Export to SD card
  5. Select the contacts you want to import or export or tap “Menu” > “Select all
  6. Tap “Save” to confirm

Add Contacts to Speed Dial:

  1. Open “Phone
  2. Tap “Menu
  3. Tap “Speed dial” > “+
  4. Select the contact you want to add to speed dial
  5. Tap the “Number” button and select the desired phone number
  6. Tap the “Location” button and select a speed dial key
  7. Tap “Save” to confirm

Delete Contacts:

  1. Launch “Contacts
  2. Tap “Menu” > “Delete contacts
  3. Tick the check boxes associated with the contacts you want to remove
  4. Tap “Delete” to confirm

Clear the Call Log:

  1. Open “Phone
  2. Go to “Call history
  3. To view more details on a call log entry, select it
  4. To reset the call log, tap “Menu” > “Remove call history” > “Menu” > “Select all
  5. Tap “Delete” > “OK

Create a Caller Group:

  1. Open “Phone
  2. Go to “Groups” and tap “+
  3. Enter the desired name for the group and tap “Save

Add Contacts to an Existing Caller Group:

  1. Open “Phone
  2. Go to “Groups
  3. Tap the desired caller group
  4. Tap “+
  5. Check the tick box next to the phone number/contact you want to assign to the caller group
  6. Tap “Save” to confirm

See More: HTC Desire 12s: Create and Manage Contacts, Caller Groups, and Call History