Bought oppo a57 in black( pretty af) 4 days ago and I got a special ramadhan cash back. Yass. And so far I dont find any problem with over heating battery, I had J3 before this and I think this one is better. If I could complain I hope that it support gyro ( but it’s still good to play game tho)
Go for redmi sets , that having much more battery life as copared to it. Main prob is battery life , it sucks very fast in oppo a57.