Vivo mobile phone is fan-shaped when sliding screen. How to adjust it?

According to the description, you can set the mobile phone screen sliding effect in the following two ways:

1 and funtouch OS below 2.0, you can turn on the I theme-personality collocation-sliding screen effect on the mobile phone desktop, and choose your favorite sliding screen effect.

2. Click the left menu button at the bottom of the mobile phone screen on the mobile phone desktop-personality-slide effect/slide effect, and select the slide effect you like.