You can go to Settings > Display and Check if there is a cast option. If there is an option, select cast option, and select a nearby device to cast upon.
Indian Packers and Movers
Well, there is no doubt that the Asus Zenfone 6Z is better than the OnePlus 5 and it is no surprise as the Asus Zenfone 6Z is one of the latest smartphones whereas the OnePlus 5 is quite old now.
Let's compare their specifications-
Processor: The Asus Zenfone 6Z comes with the Qualcomm Snapdragon 855 processor whereas the OnePlus 5 comes with the Qualcomm Snapdragon 835 MSM8998 processor.
Camera: The Asus Zenfone 6Z has a setup 48 MP + 13 MP at the back and 48 MP + 13 MP at the front whereas the OnePlus 5 has a 16 MP + 20 MP setup at the back and 20 MP at the front. Quality is great for both phones.
Battery: The Asus Zenfone 6Z has a battery of 5000mAh whereas the OnePlus 5 has a battery of 3300mAh.
Check Full Comparison Asus Zenfone 6Z and OnePlus 5