以下是引用buubuu在2006-8-21 9:33:00的发言：

我有个Tmobile unlock 的手机，我下半年需要经常去加拿大，所以想问问大家，

1。prepaid card是应该在美国买还是在加拿大买？

2。如果我在加拿大时，还能用prepaid的手机打电话回美国来么？

3。具体的费用又是怎么算？要算漫游费么？

1. T-mobile prepaid card won't work in Canada, you have to use Canadian prepaid service when you're in Canada.

2. Yes

3. normal prepaid charge + whatever long distance charge from Canada to US