Install the new Oxygen OS on your phone

حمل الآن نسختك من نظام OxygenOS وتعرف على مميزاته وكيفية تثبيته

This is a new OS from Oneplus company the productor of Oneplus phone 
it a full new OS with great new features, you can check this video to see how powerful is it.

If you like to try it download it from here :

And see how to install it in the official Oneplus forum from here****