My 3G/4G signal issues are, if anything, worse. My signal doesn't bounce around 0-2 bars now....it just stays at 0 bars. I can still get calls but my data speeds are almost non-existent.
My wifi now gets much highers speeds. Probably the only plus I saw.
Tethering is broken
Volume seems to be the same.
Overall, I'm not a happy camper. I'm going to take some videos of my phone's horrible signal and get out of my contract with Sprint (I'm in the middle of their "Best" coverage). I'm probably gonna head to Verizon or AT&T.