Oppo F1s is very good choice as compare to other selfie oriented smart phone. It has a good& clear sound reception quality. F1s is user friendly Android v5.1.1(Lollipop) system which you can easily operate icon& short keys. F1s has a comfortable size 5.5" screen is IPSLCD(HD 720*1280 Pixels)& designed that you can handle with ease.
Having as great internal memory i.e. 64GB which is more than enough& 4GB a huge RAM with 1.5 GHZ processor so no question regarding hanging phone. front camera 16MP& rare 13MP. Battery is 3075 mAh a decent battery.
It has a latest style with decent color& it has a class look.
Price of F1s is not more so it worth good.
I am using this phone from last 6-7 month and it has not a single issue& I personally has a great feeling.
So I personally recommend this phone to buy.