I live in a 3g area only but when I tried to use data it wouldn't work and then went away completely. I did a reboot and waited about five minutes and I am now on REV. A:8 and rocking with full signal. I really do not care about getting ehrpd back because there is no 4g here but for those in a non 4g area might want to reboot and let it switch you to REV.A