Simply card.

[heikal1981]

Hi.... I need assistance in using sgs2, gt-i19100. I tried to display and save my contacts from and in my sim card, but unable to do so. Anyone knows why? Is it because of my android version? Coz my wife is using gt-i19100g and her phone is fine...

 

[Rush]

Welcome to the Android Forum - nice to have you aboard...We're here to help you find your way!

There a few carriers who have the Samsung Galaxy S2 - So I have linked all varients of your phone. There are plenty of hints, tips, tricks and information on your device, as well as a bunch of experience members to help you along the way.

Samsung Galaxy S2 (AT&T) - Android Forums - (AT&T)
Samsung Galaxy S2 (T-Mobile) - Android Forums - (T-mobile)
Samsung Epic 4G Touch - Android Forums - (Sprint)
Samsung Galaxy S2 (International) - Android Forums - (International)
Samsung Galaxy S2 Skyrocket - Android Forums
Samsung Galaxy S2 Skyrocket HD - Android Forums

I hope your stay here will be useful and informative as it has been for me.