No Data Connection - already replaced SIM

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Ok, here's the deal. I bought a slightly used AT&T SGS II from a friend of mine. I rooted it (no custom ROM). At this point I noticed that I was getting no data connection. I did not notice if it worked before I rooted. I went to the AT&T store and got a new SIM card, which didn't help. My old SIM, and now the new one, both work for data in a Captivate and an Atrix. Looking for any ideas...

Ok, AT&T fixed it for me. Mods, please close.

What was the "fix"

I'm guess his line was provisioned for 3G data, and att needed to change that to the 4G/HSPA+ data plan. That's what happened to me.

Sent from my Galaxy S II (i777)

Originally Posted by quarlow

I'm guess his line was provisioned for 3G data, and att needed to change that to the 4G/HSPA+ data plan. That's what happened to me.

Sent from my Galaxy S II (i777)

Exactly. I didn't think I would have the problem, since I've been using an Atrix with that SIM and getting HSPA+ speeds for about a month now. Anyway, they swiched me over to a "4G" data plan and kept my grandfathered unlimited data as well. The guy in the store gave me a new SIM, but was clueless beyond that. Tech support on the phone had it fixed in about 10 minutes. Only took that long because he had to get a manager to put in the Unlimited data.