i think they've released a software update for the display issue (the c version and it seems to be working). mine already came setup with the c version.
the only real hardware problem i've noticed is the battery life. it lasts about 24 hours on standby. it was on 60%, i went to sleep, and woke up to the sound of the phone begging to be charged as it reached 5%.
wifi was disabled, bluetooth was disabled, gps was disabled.
i figured a firmware update will fix this, which is how i discovered no firmware update is planned and got to this forum.