The sound of the oppo a37is very good it clearly listen clearly to us .it is good in use it is fast this phone never hangs this phone is having a great matalic design and great look .in this range this phone is average 2gb ram 1.3ghz cordcore proseser 8mp rear camera 5mp rear camera 4g connectivity 2100 MAH battery 6hours battery standby . It is having a great battery life. It is a very duribal phone because of a matalic body and gorrila glass screen .this phone is very good in price of 11000 thousand range