Vivo V7 fantastic phones. I am using it for one year. Amazing battery back up with 3000 mah. I am using it doesn’t hanged till now. Perfect selfie 24 mega pixels front camera. With 16 mega pixels rare camera. It has excellent 4 gb RAM. This is the best phone that I am experienced with. It has fantastic face senser. But it must have the face sensor that detect face in dark also. Rare camera is perfect but when we make video the quality of video decrease. Otherwise it has fantastic HD screen. Colourfull brightness. Full screen display. But too much uses of this phone it heated up like if we use it for 2 or 3 hours regular.it has super power.saving mode which will do low usage of battery. Friends fantastic phone u must buy it