T-mobile 4g plan and the Iphone 4s?

I have t mobile currently with a 4g plan with unlimited everything, I plan on getting an iphone 4s soon. I wanted to know how everything would work. Would the data speed work the same as it does on my phone now?

No, the iPhone would only work at Edge (2G) speeds with T-Mobile
this is because the iPhone works at different 3G/4G frequencies that T-Mobile doesn't use.

Get an android they are 10x better thab Iphones… Samsung galaxy s3 ftw!