I bought this phone in 2014 when it launched and was excited about oppo technology. Phone is good functionaly but its side buttons are just ridicilous, they get stuck or dont work most of the time. I got them repaired many times but the result is same and one day it got stucked on Oppo logo, I restarted many times but putting out the battery but it still remained on logo. After taking it to their service center they told me it was needed to flash its software completely. After waiting an hour they told me that my phone is dead and it got emmc chip problem. Seriously I got stunned what they just said and I left the phone there and came back to Home. Dont ever think of buying it.