The Funtouch OS has very poor UI icon colors and UI icons images in the display when compared to Realme OS UI or others. The icons in the main settings appear so dull and poor quality lacking colors, contrast and sharpness. I have attached pictures of Realme UI icons vs Vivo UI icons and u feel the difference. Vivo icons and screen colors appear unsaturated, dull and lacking quality for UI interface. Please improve at least UI experience and icons and colors.

Moreover, transparency of app drawer cannot be changed in Funtouch OS and apps cannot be aligned in horizontal tabs instead of vertical view. 

Vibration input while typing numbers in Vivo dailer is also not supported.

Transparency of notification menu also cannot be changed. We need manual customisation of all things. Please update quickly.

Settings button in notification drawer should be available on single slide at top. It should not come when full notification drawer is pulled.

Option to see seconds in date and time at status bar is not available. Seconds are equally important as hours and minutes. Please allow option of seconds view in status bar.

Also, proximity sensor remains ON while call is disconnected. The phone turns off screen when hand is waved which is a new issue due to manfunctioning of proximity sensor.

Moreover, recent apps button stops working after sometime and pressing recent apps button in navigation bar returns display to homescreen. It is fixed when phone is started but how many times should we restart phone.

Furthermore, swipe call function is not available in Vivo dailer. Colors of Vivo dailer are also very poor. Missed call, received call and Dailed call icons at left of the numbers in list are of same color. It should be of different style, color and shape. So please fix all issues and update immediately.