Samsung GT-S5780 User Manual page 9

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To install the SIM or USIM card and battery,
1
If the device is on, press and hold [
turn it off.
2
Remove the back cover.
Be careful not to damage your fingernails when you
remove the back cover.
3
Insert the SIM or USIM card 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.
] and select Yes to
Assembling
9

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