Samsung GALAXY GT-S5570 - Manual (Page 10)

Assembling 10
Insert the SIM or USIM card with the gold-coloured
3
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.
To install the SIM or USIM card and battery,
If the device is on, press and hold [
1
] and select
Power off → OK to turn it off.
Remove the back cover.
2
Be careful not to damage your fingernails when you
remove the back cover.