User's Manual

Page 28
longer be valid.
【Reset factory settings 】: To restore some settings of the handset to the status
exworks
7.7 Tools
Calculator
The calculator in the handset can carry out continuous mixing four fundamental rubes
with simple, practical and convenient operations.
* key: Used to enter or switch the symbols of operation by pressing the key in
succession, including pl, sub, times, div, etc.
＃key: Press the keys in series to enter or switch the operation symbols, including 4
arithmetic operators: decimal, sign of percentage，and right and left brackets.
Press the left-soft key to view a arithmetic result and the right-soft key to clear a
character. Hold down the right-soft key to clear a row of character.
Note
： Merely a row is displayed in one page of Calculator. If not wholly observed,
please hold down the direction key to scan the entire mathematical formula.
Incoming call guard:
The receiving call guard in the handset, the humanized design for you, are used to
restrict the receiving call of a/a group of phone number (s), and indicate the receiving
call available in the course of receiving; after a streak, a missed call prompt will occur
on the screen, and the record is saved in the unanswered call menu of the records of
call.It lets you restrict receiving calls with liberty and convenience.
◆ Preset numbers: To add, view, edit, delete, delete all number(s), etc. You can
restrict a group of numbers. For example, if you have restrict “ 139" and when
all the receiving calls of the numbers initiated with “ 139 ”are available, the
network will have correspondingly the voice prompt and unable to connect;