Join Date:Joined: Feb 2012
I'd flash a rom from the T-Mobile S4 android development section and see if you get lte back.
That rom is from the i9505 forum if I'm not mistaken. I know that you can flash i9505 roms on the m919, so maybe a kernel change.
But, if it was me I'd flash insane kit kat, cm 11, or wicked or something and go from there.
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