Latest Vontar HK1 Pro user agents:

User Agent	Browser	Platform
Mozilla/5.0 (Linux; Android 8.1.0; HK1 PRO) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/80.0.3987.132 Safari/537.36	Chrome 80	Android 8
Mozilla/5.0 (Linux; Android 8.1.0; HK1 PRO Build/OPM1.171019.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/61.0.3163.98 Safari/537.36	Chrome Webview 61	Android 8