PCMag: HTC EVO 4G (Sprint) - Full Review - Reviews by PC Magazine Endgadget: HTC EVO 4G review -- Engadget That's two very different experiences. Is it possible that given the spotty Philadelphia coverage that PCMag guy was in: was having the 4G radio searching for a signal more often than not? I remember from one of the CTIA videos, someone showing the EVO said that battery life would be drastically affected if 4G was on but searching. So assuming that the Endgadget guys did most of their 4G work while in a well-covered area, that might explain the different in battery life. That also assumes that the PCMag guy had just brought it off the charger and it died in 3.5 hours, whereas the Engadget guys had it on 3G for about 2 hours then 4G for another 3 hours 15 minutes. Thoughts? Another note: the PCMag guy really didn't like the call quality could a radio firmware update fix that?