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yea, i always notice i have no data at all and i'm in a 4g area. i don't get it. it will just drop, then maybe go to 1x, then it takes a while to go back to data...
it's still not reverting to 3g when 4g is not around?

Hi,
I was having the exact same problem with my TB and my wife has the LG Revolution and her's stays on 4G all the time. I took my phone back to Verizon today really considering on getting the Rev. but the sales person told me that it was no doubt an issue with the phone. It also failed to get a 4G connection in the Verizon store; so I swapped that phone out for another Thunderbolt (I really do like the TB but was just pissed at the 4G issue) and now it seems to be working fine and holding the 4G connection. I still notice that it toggles between 3G and 4G depending what I'm doing but that's ok. It's staying on 4G much, much longer now and I'm able to stay connected to my computer via the TB mobile hotspot....
He also told me that the issue on my first TB was that the updated software version did not update or download properly. The build/software number update should is: 1.13.605.7. which is already has on my newer TB.
Hopefully when the Gingerbread update comes out this week for us TB users I pray that it addresses the connectivity issues as well.
Macman24
Mattbirk: go into settings/about phone/software information. There it will tell you your software build. You went to the status under software update.

bad sim cardSo I've never had data issues unless there was a known outage. Today, I can't get data service as others have already mentioned above - no matter what I try.
How can it just stop working???
bad sim card
bad battery cover (gold contacts on back are part of the antenne)
bad phone
outage in your area.