Latest Android 8 user agents:

User Agent Browser Device
Mozilla/5.0 (Linux; Android 8.1.0; CPH1803 Build/OPM1.171019.026; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/138.0.7204.179 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/551.1.0.58.63;IABMV/1;] Facebook 551 A3s
Mozilla/5.0 (Linux; Android 8.1.0; SM-J260F) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/87.0.4280.141 Mobile Safari/537.36 Chrome Mobile 87 Galaxy J2 Core
Mozilla/5.0 (Linux; Android 8.1.0; vivo Y85A Build/OPM1.171019.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/138.0.7204.179 Mobile Safari/537.36 Instagram 419.0.0.49.71 Android (27/8.1.0; 480dpi; 1080x2280; vivo; vivo Y85A; PD1730; qcom; en_US; 896334166; IABMV/1) Instagram 419 Y85
Mozilla/5.0 (Linux; Android 8.0.0; SM-A520F Build/R16NW; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/138.0.7204.179 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/548.1.0.51.64;IABMV/1;] Facebook 548 Galaxy A5 (2017)
Mozilla/5.0 (Linux; Android 8.1.0; LG-Q710AL Build/O11019; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/132.0.6834.164 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/551.1.0.58.63;IABMV/1;] Facebook 551 Stylo 4
Mozilla/5.0 (Linux; Android 8.1.0; vivo Y83 Build/O11019; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/138.0.7204.179 Mobile Safari/537.36 Instagram 417.0.0.54.77 Android (27/8.1.0; 320dpi; 720x1520; vivo; vivo Y83; 1802; mt6762; en_US; 884780525) Instagram 417 Y83
Mozilla/5.0 (Linux; Android 8.1.0; vivo 1814 Build/O11019; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/138.0.7204.179 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/551.1.0.58.63;IABMV/1;] Facebook 551 Y93
Mozilla/5.0 (Linux; Android 8.1.0; SM-N960F Build/M1AJQ; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/138.0.7204.179 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/551.1.0.58.63;IABMV/1;] Facebook 551 Galaxy Note 9
Mozilla/5.0 (Linux; Android 8.0.0; SM-G955U1 Build/R16NW; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/138.0.7204.179 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/551.1.0.58.63;IABMV/1;] Facebook 551 Galaxy S8+
Mozilla/5.0 (Linux; Android 8.1.0; vivo Y83 Build/O11019; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/138.0.7204.180 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/551.1.0.58.63;IABMV/1;] Facebook 551 Y83
Mozilla/5.0 (Linux; Android 8.1.0; CPH1909 Build/O11019; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/138.0.7204.179 Mobile Safari/537.36 Instagram 418.0.0.51.77 Android (27/8.1.0; 320dpi; 720x1520; OPPO; CPH1909; CPH1909; mt6765; en_US; 891072507; IABMV/1) Instagram 418 A5S
Mozilla/5.0 (Linux; Android 8.1.0; CPH1901 Build/OPM1.171019.026; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/138.0.7204.179 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/549.0.0.61.62;IABMV/1;] Facebook 549 A7
Mozilla/5.0 (Linux; Android 8.1.0; vivo 1823 Build/O11019; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/138.0.7204.179 Mobile Safari/537.36 Instagram 417.0.0.54.77 Android (27/8.1.0; 320dpi; 720x1520; vivo; vivo 1823; 1820; mt6762; en_US; 884780525; IABMV/1) Instagram 417 Y90
Mozilla/5.0 (Linux; Android 8.1.0; CPH1909 Build/O11019; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/138.0.7204.179 Mobile Safari/537.36 Instagram 419.0.0.49.71 Android (27/8.1.0; 320dpi; 720x1520; OPPO; CPH1909; CPH1909; mt6765; en_US; 896334216; IABMV/1) Instagram 419 A5S
Mozilla/5.0 (Linux; Android 8.1.0; CPH1909 Build/O11019; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/138.0.7204.179 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/545.0.0.43.63;IABMV/1;] Facebook 545 A5S
Mozilla/5.0 (Linux; Android 8.1.0; vivo 1811 Build/OPM1.171019.026; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/138.0.7204.179 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/548.1.0.51.64;IABMV/1;] Facebook 548 Y91
Mozilla/5.0 (Linux; Android 8.1.0; DUB-LX1 Build/HUAWEIDUB-LX1; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/138.0.7204.179 Mobile Safari/537.36 Instagram 417.0.0.54.77 Android (27/8.1.0; 320dpi; 720x1520; HUAWEI; DUB-LX1; HWDUB-Q; qcom; en_GB; 884780525; IABMV/1) Instagram 417 Y7 (2019)
Mozilla/5.0 (Linux; Android 8.1.0; CPH1909 Build/O11019; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/138.0.7204.179 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/544.0.0.42.272;IABMV/1;] Facebook 544 A5S
Mozilla/5.0 (Linux; Android 8.0.0; ANE-LX1 Build/HUAWEIANE-LX1; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/138.0.7204.179 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/551.1.0.58.63;IABMV/1;] Facebook 551 P20 Lite
Mozilla/5.0 (Linux; Android 8.0.0; G3223 Build/48.1.A.2.109; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/138.0.7204.179 Mobile Safari/537.36 Instagram 419.0.0.49.71 Android (26/8.0.0; 480dpi; 1080x1920; Sony; G3223; G3223; mt6757; es_AR; 896334220; IABMV/1) Instagram 419 Xperia XA1 Ultra