I used oppo a57 since last 1 year and performance is still awesome. Battery backup is good and fingerprint sensor work very well. 3 gb of ram is very powerful and handled multi work. Smooth touch and respond very quickly. 32 gb storage is enough and good at 3gb of ram. Working condition is awesome like new after 1 year and half month. Camera quality is good, mostly selfie camera which 16 Mp provide great shots. The auto focus is very fast and accurate. However overall rating from me is 3 out of 5. Thank You