IPad 3 constantly dropping strong 4G LTE signal

My iPad 3 suddenly refuses to hold the very strong (5 bars) 4G LTE signal here at work. The LTE signal is very strong here, my iPad has always had an excellent LTE signal since I activated it a few months ago. Now, it grabs the LTE signal immediately -- five bars -- and gives me LTE speeds. This lasts only for a couple of minutes. After a couple of minutes, it suddenly says **Could not activate data cellular network** and reverts to 3G. This never used to happen, but has been happening for the past several days now.
I've tried resetting network settings, airplane mode on/off, turn wireless off, turn on/off cellular data, hard reset of the iPad, full shutdown of the iPad. Nothing worked.
I've Googled, and this appears to be a fairly common issue without any clear resolution. What's the answer?

MarquiaF_VZW - thanks for the reply. With more Googling and messages on other forums, I resolved this on my own. To cut to the chase and hopefully help others, here's the answer. I'll also more fully describe the issue below the answer:
ANSWER
(1) Go to Settings.
(2) Go to General.
(3) Choose Reset.
(4) Choose Subscriber Services.
(5) Select Reprovision Account.
(6) Reboot iPad.
This completely fixed the issue for me. My LTE has been solid since performing this fix two weeks ago. Before doing this, I tried pretty much everything else you can try short of getting a new SIM card.
PROBLEM
This was not a Verizon coverage issue. 4G is very strong here at work, and it is reasonably strong at home. I never had any 4G issues at either place, then suddenly I had them constantly. My iPad would latch onto the (5 bar) 4G signal quickly, give me 4G service for 30 seconds to a couple of minutes, then drop it for 3G, sometimes also displaying a "Could not activate data cellular network" message. It would stay at 3G unless I reset the iPad, shut it down completely, reverted to all defaults, or whatever. Then I'd get 4G right away again, but dropping to 3G the same way within a minute or two again.
I saw this exact same issue at the following thread, where I also posted, and where someone suggested the "reprovision account" solution: http://forums.macrumors.com/showthread.php?t=1535823
That solution worked perfectly for me and a few others on that thread, but not everyone. I suspect that for the others, they may have actual 4G coverage or antenna or SIM card issues. For me, it was apparently an issue where VZW didn't recognize my iPad / account any more, for whatever reason. Reprovisioning was the way to go. I'll try to mark this thread as "answered" to help other people, or perhaps you at VZW can mark it.
Thanks for contacting me. VZW support and the 4G LTE service are excellent.

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Message was edited by: dawgma

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Re: iphone 4s - HOTSPOT - WILL NOT STAY CONNECTED
Mar 13, 2012 1:20 PM (in response to coalxman)
I have been having that problem for 6 months and my IT guy finally found a solution by mining the web. I don't know the source of the answer to give credit but it works !
Text of blog posting below:
t does, thanks! I was getting really frustrated with connecting my iPad to my 4S via Personal Hotspot. After a fresh boot of the phone it would work as expected but if the connection was terminated (say by switching hotspot off and on) or after the two hadn't been connected for a while it got into this state where I could see and connect to the hotspot but it would drop a few seconds later then try again over and over.
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Optional extra: Instead of using whatever DNS values the DHCP server (and by extension your mobile data ISP) gives you, use OpenDNS IP's instead. This will speed up YouTube due to their partnership with Google and prevent your ISP from traking your web usage via DNS interception. To do this enter the following into the DNS field under the Static tab: 208.67.222.222,208.67.220.220 (note the comma)
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Verizon Ipad Dropping LTE Signal

Dear Community,
For about 1 month now, my ipad (Verizon 32gb Wi-Fi +Lte) which is running IOS 5.1.1 has been dropping the 4g lte signal at an increasing rapid place in the NYC/ Long Island Area. While i would normally attribute this to Verizon's coverage, the fact is that i am operating in the same area i have been since i purchased the ipad on march 16th. Previously, the ipad held the signal flawlessly and with at least 4 bars.
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http://bit.ly/SjwrC2
4) Here is an application that is recommended from the manufacturer of your device to help with this as well:
http://bit.ly/Ov7Dq1
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~~~~~~~~~~~~~~~
If any of the above solutions work, please post back what solved your problem. It will help others with the same problem.
 Cheers, Tom

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http://osxdaily.com/2012/03/21/fix-new-ipad-3-wi-fi-reception-problems/
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~~~~~~~~~~~~~~~
If any of the above solutions work, please post back what solved your problem. It will help others with the same problem.
 Cheers, Tom

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Message Edited by toomanydonuts on 05-08-200704:34 AM
Message Edited by toomanydonuts on 05-08-200704:35 AM

IPad 3 constantly dropping strong 4G LTE signal

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