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/45.0.2327.1571 Mobile Safari/537.36 Chrome Mobile 45 Nexus 5
Mozilla/5.0 (Linux; Android 6.0; Nexus 5 Build/MRA58N) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/55.0.2482.1121 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/55.0.3889.1337 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/55.0.2205.1366 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/43.0.3875.1395 Mobile Safari/537.36 Chrome Mobile 43 Nexus 5
Mozilla/5.0 (Linux; Android 6.0; Nexus 5 Build/MRA58N) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/39.0.4202.1058 Mobile Safari/537.36 Chrome Mobile 39 Nexus 5
Mozilla/5.0 (Linux; Android 6.0; Nexus 5 Build/MRA58N) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/40.0.6885.1843 Mobile Safari/537.36 Chrome Mobile 40 Nexus 5
Mozilla/5.0 (Linux; Android 6.0; Nexus 5 Build/MRA58N) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/44.0.7574.1821 Mobile Safari/537.36 Chrome Mobile 44 Nexus 5
Mozilla/5.0 (Linux; Android 6.0.1; Nexus 10 Build/MOB31T) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/150.0.0.0 Safari/537.36 Chrome 150 Nexus 10
Mozilla/5.0 (Linux; Android 6.0.1; Moto G (4)) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/150.0.0.0 Mobile Safari/537.36 Chrome Mobile 150 Moto G4
Mozilla/5.0 (Linux; Android 6.0.1; SM-G903F) AppleWebKit/537.36 (KHTML, like Gecko) Brave Chrome/84.0.4147.125 Mobile Safari/537.36 Brave 84 Galaxy S5 Neo
TV Bro/1.0 Mozilla/5.0 (Linux; Android 6.0.1; HG680-P Build/MHC19J; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/70.0.3538.110 Safari/537.36 TV Bro 1 Unknown
Mozilla/5.0 (Linux; Android 6.0; Nexus 5 Build/MRA58N) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/41.0.2939.1069 Mobile Safari/537.36 Chrome Mobile 41 Nexus 5
Mozilla/5.0 (Linux; Android 6.0; Nexus 5 Build/MRA58N) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/40.0.9055.1774 Mobile Safari/537.36 Chrome Mobile 40 Nexus 5
Mozilla/5.0 (Linux; Android 6.0; Nexus 5 Build/MRA58N) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/40.0.2689.1665 Mobile Safari/537.36 Chrome Mobile 40 Nexus 5
Mozilla/5.0 (Linux; Android 6.0; Nexus 5 Build/MRA58N) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/39.0.5567.1258 Mobile Safari/537.36 Chrome Mobile 39 Nexus 5
Mozilla/5.0 (Android 6.0; Mobile; rv:34.0) Gecko/34.0 Firefox/34.0 Firefox Mobile 34 Unknown
Mozilla/5.0 (Linux; Android 6.0; Nexus 5 Build/MRA58N) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/49.0.9298.1559 Mobile Safari/537.36 Chrome Mobile 49 Nexus 5
Mozilla/5.0 (Linux; Android 6.0.1; TF-LED32S93T2S Build/M5C14J; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/48.0.2542.0 Safari/537.36 Chrome Webview 48 Unknown
Mozilla/5.0 (Linux; Android 6.0; Nexus 5 Build/MRA58N) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/46.0.7100.1059 Mobile Safari/537.36 Chrome Mobile 46 Nexus 5