LG LGP504 - Manual (Page 23)

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Back Cover encloses the battery compartment.
Microphone transmits your voice to the other
caller and to Voice-activated functions.
Accessory/Charger Port allows you to connect the
phone charger, USB cable, or other compatible
accessories.
Tip! The LG Optimus One does not support
Video calls.
Tip! If the LG Optimus One has errors when
you use it or you cannot turn it on, remove the
battery, install it again and turn it on after 
seconds.
Installing the SIM card and battery
Before you can start exploring your new phone, you’ll
need to set it up. To insert the SIM card and battery:
Hold the phone with both hands and use the
fingernail cutout at the top of the phone to pull
open the battery cover (as shown below).
4.
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