If I were to purchase an iPhone 6S from Apple US Store http://www.apple.com/shop/buy-iphone/iphone6s/4.7-inch-display-64gb-gold-att
1) Can the phone be used in Singapore using Singapore sim card?
1.1) If yes, there is a Carrier option e.g. (at&t, Sprint, tmobile etc.) from the US Store, may I know which 1 should I choose?
1.2) Does it require any "unlock" feature?
2) Is there any other thing which I need to take note from buying iPhone from US Store?
2.1) Understand that the adapter is US kind of plug, can I use back my existing iPhone 5S adapter and cable?
Thanks.
1) Can the phone be used in Singapore using Singapore sim card?
1.1) If yes, there is a Carrier option e.g. (at&t, Sprint, tmobile etc.) from the US Store, may I know which 1 should I choose?
1.2) Does it require any "unlock" feature?
2) Is there any other thing which I need to take note from buying iPhone from US Store?
2.1) Understand that the adapter is US kind of plug, can I use back my existing iPhone 5S adapter and cable?
Thanks.
