HELLO
I went to the T-MOBILE store three times and had no luck. ago After calling tech support to make sure that I indeed had internet service, it still didn't work for over 24 hours so I kept tweaking different settings.
1st - you have to call tech support to make sure T-Mobile have you on the right data plan for the Z10.
2nd - make sure you hit the reset for the APN so that is is fast.t-mobile.com; and
3rd - set the network mode to 4G, 3G, & 2G.
I tried all of them one at a time and this was the only one that connected my internet without wifi being on.
Let me know if this works for you......Good Luck!
-quyetstorm
12-26-13 02:10 PM