Originally Posted by aaronlong
No matter which modem I use, this rom always loses connection. And, it is just this rom. There is something wrong with it. I cannot use it anymore!
Sent from my SGH-I777 using XDA
From my understanding this ROM accurately reports what your connected to, be it 3G, H, H+ whatever, unless the dev goes out of his way to address this, AT&T code base sort of defaults to H+ when that is not really accurate.
Benchmark one ROM against the other to see what your true speed is. Using the same modem I have better data transfer speed (as benchmarked, although my sample size is too small to yield relevant data) with this ROM than the other major ICS ROMs.
If you really are having a problem, play around with modems, there are a bunch out there, and some work better in some locations than others. Or as said before perhaps something odd happened during your download (no MD5) or during the flash that a full wipe/reinstall would fix.