As a user of M9, I must tell that this is the with great performance, better came, more reliable, no hanging.This phone’s metal body and 20MP primary and 4UP front camera makes it more reliable and a good camera phoneThe front facing dolby 2 speaker makes extra superb quality sound.But it comes with qualcomm snapdragon 810 processor, which is the worst processor ever from snapdragon.Because it heats like an ironbox.The heat this phone produces isn’t bearable.Except the case of heating, this phone will be a miracle.