Cannot connect to 4G network after update to OS 10.3.1

Have a Q10 through Sprint and after updating to OS 10.3.1 from the Blackberry site, phone will now only connect to 3G network despite availablity of 4G network. Phone used to connect to 4G network with OS 10.2,

I do have same problem, i'm unable to connect to even 3G network and it connect to 2G network only when there is full network
My page on: App World
Check out my Apps 1). QFileExplorer 2). My ABCD
System Explorer APPID: 35601892

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That poor wordpress site has collapsed in exaustion from trying to keep up with the 3mil hits a day
here is a "copied" version with credits for those looking for a solution to an annoying problem Apple should patch. (Yes, I'm aware of the irony of that statement)
July 18, 2012 · by Arthur Lockman · in Apple, Tutorials
After doing a reinstall of Lion a few weeks ago, I found that my computer suddenly would reject every VeriSign certificate that it encountered. Using Chrome, that meant that I couldn’t even access Twitter.com, because it thought that the certificate was wrong. I couldn’t login to the Apple developer portal, I couldn’t authenticate a device with XCode, I couldn’t make a purchase at Apple.com, I couldn’t download updates from the Mac App Store, and I couldn’t login to Mint.com, among other sites. I essentially couldn’t do anything that used a VeriSign certificate for SSL.
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Cannot connect to 4G network after update to OS 10.3.1

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