How fast would my internet on a iphone 5 be for me?

I live in dorset in the uk and will be getting an iphone 5 on t mobile and will be using 3g even though I will be using same network will the iphone 5 speed make a difference to internet speed compared to my phone I have now which is a motarola defy. Sorry if it isn't very clear I tried to explain my situation the best I could.

No, 3G is 3G no matter what the phone. You'll have the same speed. The only way to increase your internet speed would be to use either 4G or LTE. Neither of which would make an appreciable difference in day to day operations.

I have red on couple of blogs that 3G speed on iPhone 5 is faster as compare to other iPhone versions.

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