HTC One User Manual page 154

154 Phone calls
Adding a new phone number to your contacts from Call History
1. On the Call History tab, tap
2. Choose whether to create a new contact or save the number to an
existing contact.
Clearing the Call History list
1. On the Call History tab, tap
2. Select the items you want to delete, or tap
3. Tap Delete.
Blocking a caller
When you block a phone number or a contact, all calls from the phone
number or contact will be declined automatically.
On the Call History tab, press and hold the contact or phone number you
want to block, and then tap Block contact.
You can always remove a caller from your blocked list. On the Call
History tab, tap
and then tap Unblock contacts.
next to the new phone number.
> Remove call history.
> Blocked contacts. Press and hold a contact,
> Select all.