Hi, this probably been asked before.. Im intend to signup Maxis I-Data 3GB pack for 24 months and buy the I-Phone 3Gs 16GB.

However, i already got 1 HTC Touch HD. Can i use the sim card on HTC Touch HD instead, would there be any restriction?

For the I-phone, plan to give it to my wife or sell it off, will it be any problem for them to use tat phone?