I have just recently purchased an OPPO F1s, it was my first time using oppo
but after some time I have faced the problem of incoiming voice call volume problem.
Beside this I found an issue where I when I install a new App and have deleted one previously it leaves a space in the layout blank,
Other than that, the Oppo F1s has taken a lot of design cues from the F1 Plus, which is disappointing me a lot.