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/39.0.5495.1643 Mobile Safari/537.36 Chrome Mobile 39 Nexus 5
Mozilla/5.0 (Linux; Android 6.0) AppleWebKit/531.0 (KHTML, like Gecko) Chrome/18.0.859.0 Safari/531.0 Chrome 18 Unknown
Mozilla/5.0 (Linux; Android 6.0; Nexus 5 Build/MRA58N) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/58.0.4222.1711 Mobile Safari/537.36 Chrome Mobile 58 Nexus 5
Mozilla/5.0 (Linux; Android 6.0; Nexus 5 Build/MRA58N) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/42.0.4269.1040 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/51.0.3059.1848 Mobile Safari/537.36 Chrome Mobile 51 Nexus 5
Mozilla/5.0 (Linux; Android 6.0; Nexus 5 Build/MRA58N) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/44.0.6618.1028 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/41.0.7957.1748 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/42.0.4528.1528 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/47.0.8922.1932 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/53.0.8449.1231 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/42.0.4216.1160 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/44.0.3193.1212 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/56.0.9904.1761 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/43.0.2531.1059 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/45.0.8722.1111 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/46.0.2808.1530 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/55.0.8278.1413 Mobile Safari/537.36 Chrome Mobile 55 Nexus 5
Mozilla/5.0 (Linux; Android 6.0; HUAWEI VNS-L31) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/93.0.4577.82 Mobile Safari/537.36 Chrome Mobile 93 P9 Lite
Mozilla/5.0 (Linux; Android 6.0; Nexus 5 Build/MRA58N) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/47.0.5547.1602 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/54.0.4305.1648 Mobile Safari/537.36 Chrome Mobile 54 Nexus 5