Has anyone else been having signal or data speed issues I also have the epic 4g wen it has like 3 bars da nexus has none to like one n my download speeds are like 50 KB/s and I'm thinking of taking it bak had it like 3 days now no change can't root cuz I cnt adb to wrk on my Mac any help or same issues cuz I thought maybe its just this particular Nexus S.