Zte R570 Quick Start Manual page 12

[View]: See the current record.
[Call]: Call the current number.
[Send text messages]: send text messages to the current record.
[Save to phonebook]: save the phone number to phonebook.
[Add to Blacklist]: Add the current to the blacklist.
[Edit before call]: on the current record for editing.
[Delete]: choose to delete the current record.
4. All Calls: With this feature, you can check recent missed calls, he had
to answer the phone, dial the phone records had 20 words each record.
After entering this function, press the up or down navigation key to
select a phone number. Press the OK button to view the content of the
telephone records.
5. Delete call logs: Respectively delete dialed calls, missed calls,
received calls, phone records of all calls.
6. Call timers:
Call settings
Call transfer and call waiting and other functions can be set in the menu.
[Call waiting]：Select the functions of open, close or inquire call
waiting.
[Call divert]：Choose to open, close or enquire the call forwarding
function.
You can view all of talk time.