Samsung GT-S5830 User Manual page 10

To install the SIM or USIM card and battery,
1
If the device is on, press and hold [
Power off to turn it off.
2
Remove the back cover.
Be careful not to damage your fingernails when you
remove the back cover.
10
Assembling
3
] and select
Insert the SIM or USIM card.
•
Place the SIM or USIM card into the device with
the gold-coloured contacts facing down.
•
If you do not insert a SIM or USIM card, you can
only use your device's non-network services and
some menus.