This problem is unique in that re-flashing the kernel, hard resetting the phone, or disabling mobile data has not solved it. I flashed my phone according to RootzWiki's "[KERNEL] [GUIDE] Root Your Stratosphere! " article. Everything went well after my phone rebooted except that my wireless was off by default, and I got the dreaded "Unable to scan networks" message so many people have gotten. I restarted, I soft reset, I hard reset numerous times, I reinstalled the kernel 7 times, and I disabled mobile data, but the problem persists. I really doubt it is a hardware issue as it arose literally immediately after rooting. I'm not sure where to go from here, perhaps another kernel? Thanks in advance.