KARBONN K81 USER MANUAL
26
example: basement, the signal might be weak.
Try reaching a location with stronger signal
reception and call again.
While using the mobile phone in the peak
period of communication, like commute time,
you may be unable to call because of line
congestion.
Standby duration
shortened
The standby duration is relative to the system
setting of network. While the mobile phone is
in an area with poor signal strength and can
not receive the signal, the handset will
continuously search for a base station. This
will significantly reduce battery charge. It is
recommended that you turn off your mobile in
area with no signal reception to save battery.
Need replacing the battery. Please change a
new battery.
SIM Card Error
Dirt on the metal surface of an SIM card. Use
clean cloth to wipe the metal touch point on an
SIM card.
The SIM card is not installed.
The SIM card is damaged. Please contact your
network service provider.
Unable to dial out Please confirm if you press the dial key after
dialing.
Please confirm if calling is forbidden because
of defaulting.
Please confirm if the SIM is valid.
Please confirm if the call barring is set.
Please confirm if the fixed dial function is set.
KARBONN K81 USER MANUAL
7
1.1 Keys
Key
Function
SIM1 Dial
key/SIM2
Dial Key
Answer all calls
Make calls from SIM1/SIM2 card
View SIM1/SIM2 card call logs in standby mode.
End /Power
Key
Pressing and holding to turn the phone on/off.
End a call or reject an incoming call.
Return to the standby mode.
OK Key
Press to access the main menu in standby mode.
Press to confirm a selection.
Navigation
Key
Within a menu, press Up, Down, Left or Right to
scroll through menu options. In standby mode,
press to access main menu
Left/Right
soft Key
Press to perform the function currently displayed
in the bottom left/right corner of the screen
Numeric key
Enter numbers, letters or characters.
Select a submenu item labeled with the
corresponding number.
* Key
Press to popup the symbols screen when entering
text.
Press and hold the * Key to toggle between *, +,
(pause character) P, and (wait character) W in
standby mode.
Press Left Soft Key and * Key to lock/Unlock
keypad.
# Key
Press to switch the input methods when entering
text.
0 Key
Press to enter Space when editing text.
Note: “Press” in this manual, means to press and
release the key; “press and hold” means to press and
hold the key for at least 2 seconds.
