We got an iphone with our tmobile service, internet runs very slow and cant send any picture emails unless on wifi. Have spoken with tmobile but looking for a better solution.
Yea i used an iphone for tmobile before i got frustrated and gave it to my brother..
Overall iphones internet is slow to begin with no matter on what carrier. I used it through tmobile and it was terrible
Sorry thats just how it is, i had the best luck by staying in college campus or starbucks and used it through wifi
Unfortunately theres no better way