I have this smart phone. I purchased this smart phone before three years back. Still I have no problem with this phone. But ear phone is very bad. Always it get damaged automatically. I have exchange for three times this. However, phone is good because, from 3 years I never approach to service center. Still, no software hangging problem with this phone. No damage problem because of its hard body. I will not able to updated to 4G. This is drawback of this phone. Battry back is good means morning to night. Camera quality is not like honor phones.They have great picture quality.i can say about this smart phone that, most efficient phone with less cost in phone market.