HTC desire 628 is a very popular set with remarkable features and precisely every thing is fine with one problem.sound will here only on another side when we talk the mobile phone near to our mouth.if we keep the phone distance of more than 5 cm from the mouth the sound wont transmitted.good to use in city or in large crowded area or in bus.for me normal use I am fed with this sound problem.rest of the things are ok.good battery back up.You buyers can try this set, very reliable model of HTC