Using iPhone 4s locked to AT&T with AT&T's prepaid Go phone plan?

[AbyssImpact]

Is it possible? Or does it need to be unlocked.

 

[Applejuiced]

Its possible.
You dont need to unlock it.
It will accept all AT&T sims, even prepaid.

 

[rookiezzz]

There's a few threads here suggesting to use H2O, it's much cheaper, and we can use the 3g internet connection. Not as fast as the real 3g, but still much faster than edge. The rumors said they are able to use H2O in locked AT&T iphones since it uses the same tower with AT&T. I'm going to try it when my next prepaid's plan is over

 

[AbyssImpact]

There's a few threads here suggesting to use H2O, it's much cheaper, and we can use the 3g internet connection. Not as fast as the real 3g, but still much faster than edge. The rumors said they are able to use H2O in locked AT&T iphones since it uses the same tower with AT&T. I'm going to try it when my next prepaid's plan is over

You can use 3g on at&t go phone also. 5kb per 1 cent or you can purchase the plan which is 500mb for $25.