Oneplus 6 viewport size for chrome Emulated Devices

For more information you can check out this page.

According to that page:

• width x height: 568x320
• Device pixel ratio: 2.6252

For user agent though, they list many. The one I use is:

• User agent string: Mozilla/5.0 (Linux; Android 9; ONEPLUS A6000 Build/PKQ1.180716.001; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/70.0.3538.64 Mobile Safari/537.36

Use this details

width x height: 412x869

Device pixel ratio: 1.00

User agent string: Mozilla/5.0 (Linux; Android 9; ONEPLUS A6000 Build/PKQ1.180716.001; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/70.0.3538.64 Mobile Safari/537.36