GT Mobile I801 - Manual (Page 23)

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battery capacity falls to approximately 50% of its original storage
capacity.
Turning your phone on/off
Power on
Tip:
When switched on, your phone is busy searching the network. Some
functions may NOT work properly in the first few seconds.
1. Press and hold the Power key for 2 seconds to turn your phone on.
Your phone will display the power on animation and enter standby
mode.
2. If necessary, enter your SIM card PIN code (displayed as ****) to
unlock the SIM card.
3. Please refer to Other settings>Security setting>PIN code at P85 to
get more information on the PIN code.
Power off
Press and hold the Power key for 2
seconds to turn your phone off. Your phone
will display power off animation.
Tip：
Your phone has a built-in antenna at the
bottom of the phone body. Contact with the
antenna affects call quality and may cause
the phone to operate at a higher power
level than otherwise needed. Not touching
the antenna area during a phone call
optimizes the antenna performance and the
talktime of your phone.