Sony Ericsson K220c User Manual page 7

Gsm 900/1800
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To set the phone to silent
From standby, press and hold
To lock or unlock the keypad
To avoid dialling a number by accident, press
select
Lock
To unlock the keypad, press
% 55 Keypad lock for more information.
To turn the screen light on
Press any key to turn the screen light on.
SIM card
When you register as a subscriber with a network
operator, you get a SIM (Subscriber Identity Module) card.
The SIM card keeps track of your phone number, the
services included in your subscription, and your contact
information, among other things.
If you have been using a SIM card in another phone,
make sure that your information is saved to the SIM
card before you remove it from the other phone.
This is the Internet version of the user's guide. © Print only for private use.
keys.
.
and select Unlock.
and
7

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