Oppo f1s is good and smooth, nice to see. I am using this mobile from january 2017, camera are very good, front camera is super to capture high resolution image.
Display is quite fine, and so bright but bettery is not good for whole day use.
I am game lover, I love to play game, I play game on this device, no heating problem here.
Out put sound is so well and very loud.
I am happy with this mobile.
Price is not enough high.