Latest Android 6 user agents:

User Agent Browser Device
Mozilla/5.0 (Linux; Android 6.0; Nexus 5 Build/MRA58N) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/60.0.1303.1594 Mobile Safari/537.36 Chrome Mobile 60 Nexus 5
Mozilla/5.0 (Linux; Android 6.0; Nexus 5 Build/MRA58N) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/53.0.8485.1941 Mobile Safari/537.36 Chrome Mobile 53 Nexus 5
Mozilla/5.0 (Linux; Android 6.0; Nexus 5 Build/MRA58N) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/53.0.4083.1464 Mobile Safari/537.36 Chrome Mobile 53 Nexus 5
Mozilla/5.0 (Linux; U; Android 6.0.1; zh-cn; SM-A7100 Build/MMB29M) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/57.0.2987.132 MQQBrowser/8.4 Mobile Safari/537.36 QQ Browser 8 Galaxy A7 (2016)
Mozilla/5.0 (Linux; Android 6.0; Nexus 5 Build/MRA58N) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/46.0.8562.1963 Mobile Safari/537.36 Chrome Mobile 46 Nexus 5
Mozilla/5.0 (Linux; Android 6.0; Nexus 5 Build/MRA58N) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/55.0.8882.1993 Mobile Safari/537.36 Chrome Mobile 55 Nexus 5
Mozilla/5.0 (Linux; Android 6.0; Nexus 5 Build/MRA58N) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/43.0.7448.1467 Mobile Safari/537.36 Chrome Mobile 43 Nexus 5
Mozilla/5.0 (Linux; Android 6.0.1; SM-G532M Build/MMB29T) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/67.0.3396.87 Mobile Safari/537.36 Chrome Mobile 67 Galaxy J2 Prime
Mozilla/5.0 (Linux; Android 6.0; Nexus 5 Build/MRA58N) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/59.0.8931.1812 Mobile Safari/537.36 Chrome Mobile 59 Nexus 5
Mozilla/5.0 (Linux; Android 6.0; Nexus 5 Build/MRA58N) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/51.0.3856.1284 Mobile Safari/537.36 Chrome Mobile 51 Nexus 5
Mozilla/5.0 (Linux; Android 6.0) AppleWebKit/531.2 (KHTML, like Gecko) Chrome/45.0.806.0 Safari/531.2 Chrome 45 Unknown
Mozilla/5.0 (Linux; Android 6.0; Nexus 5 Build/MRA58N) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/49.0.7434.1776 Mobile Safari/537.36 Chrome Mobile 49 Nexus 5
Mozilla/5.0 (Linux; Android 6.0; Nexus 5 Build/MRA58N) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/56.0.1987.1972 Mobile Safari/537.36 Chrome Mobile 56 Nexus 5
Mozilla/5.0 (Linux; Android 6.0; Nexus 5 Build/MRA58N) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/42.0.6699.1434 Mobile Safari/537.36 Chrome Mobile 42 Nexus 5
Mozilla/5.0 (Linux; Android 6.0; Nexus 5 Build/MRA58N) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/49.0.4150.1682 Mobile Safari/537.36 Chrome Mobile 49 Nexus 5
Mozilla/5.0 (Linux; Android 6.0; Nexus 5 Build/MRA58N) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/44.0.4421.1676 Mobile Safari/537.36 Chrome Mobile 44 Nexus 5
Mozilla/5.0 (Linux; Android 6.0; Nexus 5 Build/MRA58N) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/47.0.5536.1941 Mobile Safari/537.36 Chrome Mobile 47 Nexus 5
Mozilla/5.0 (Linux; Android 6.0; Nexus 5 Build/MRA58N) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/50.0.3734.1067 Mobile Safari/537.36 Chrome Mobile 50 Nexus 5
Mozilla/5.0 (Linux; Android 6.0.1; SM-G925A) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/106.0.0.0 Mobile Safari/537.36 Chrome Mobile 106 Galaxy S6 Edge
Mozilla/5.0 (Linux; Android 6.0; Nexus 5 Build/MRA58N) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/57.0.4222.1429 Mobile Safari/537.36 Chrome Mobile 57 Nexus 5