Latest OPPO A83 (2018) user agents:

User Agent	Browser	Platform
Mozilla/5.0 (Linux; U; Android 7.1.1; vi; CPH1827 Build/N6F26Q) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/75.0.3770.101 YaBrowser/19.6.2.338.00 Mobile Safari/537.36	Yandex Browser 19	Android 7
Mozilla/5.0 (Linux; U; Android 7.1.1; en-us; CPH1827 Build/N6F26Q) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/77.0.3865.116 Mobile Safari/537.36 HeyTapBrowser/15.7.7.1	HeyTapBrowser 15	Android 7
Mozilla/5.0 (Linux; U; Android 7.1.1; en-us; CPH1827 Build/N6F26Q) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/70.0.3538.80 Mobile Safari/537.36 HeyTapBrowser/15.7.6.1	HeyTapBrowser 15	Android 7
Mozilla/5.0 (Linux; U; Android 7.1.1; en-us; CPH1827 Build/N6F26Q) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/70.0.3538.80 Mobile Safari/537.36 HeyTapBrowser/15.7.5.1	HeyTapBrowser 15	Android 7
Mozilla/5.0 (Linux; U; Android 7.1.1; en-us; CPH1827 Build/N6F26Q) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/70.0.3538.80 Mobile Safari/537.36 HeyTapBrowser/15.7.4.1	HeyTapBrowser 15	Android 7
Mozilla/5.0 (Linux; U; Android 7.1.1; en-us; CPH1827 Build/N6F26Q) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/70.0.3538.80 Mobile Safari/537.36 HeyTapBrowser/15.7.3.3.2	HeyTapBrowser 15	Android 7
Mozilla/5.0 (Linux; U; Android 7.1.1; en-us; CPH1827 Build/N6F26Q) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/70.0.3538.80 Mobile Safari/537.36 HeyTapBrowser/15.7.3.3.1	HeyTapBrowser 15	Android 7
Mozilla/5.0 (Linux; U; Android 7.1.1; en-us; CPH1827 Build/N6F26Q) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/70.0.3538.80 Mobile Safari/537.36 HeyTapBrowser/15.7.2.5	HeyTapBrowser 15	Android 7
Mozilla/5.0 (Linux; U; Android 7.1.1; en-US; CPH1827 Build/N6F26Q) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/57.0.2987.108 UCBrowser/13.2.0.1296 Mobile Safari/537.36	UC Browser 13	Android 7
Mozilla/5.0 (Linux; U; Android 7.1.1; en-US; CPH1827 Build/N6F26Q) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/57.0.2987.108 UCBrowser/12.14.0.1221 Mobile Safari/537.36	UC Browser 12	Android 7
Mozilla/5.0 (Linux; U; Android 7.1.1; en-US; CPH1827 Build/N6F26Q) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/57.0.2987.108 UCBrowser/12.12.6.1221 Mobile Safari/537.36	UC Browser 12	Android 7
Mozilla/5.0 (Linux; U; Android 7.1.1; en-us; CPH1827 Build/N6F26Q) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/53.0.2785.134 Mobile Safari/537.36 OppoBrowser/15.5.1.10	Oppo Browser 15	Android 7
Mozilla/5.0 (Linux; U; Android 7.1.1; en-us; CPH1827 Build/N6F26Q) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/53.0.2785.134 Mobile Safari/537.36 OppoBrowser/1.0.0	Oppo Browser 1	Android 7
Mozilla/5.0 (Linux; U; Android 7.1.1; en-us; CPH1827 Build/N6F26Q) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.88 Mobile Safari/537.36 HeyTapBrowser/15.8.4.1	HeyTapBrowser 15	Android 7
Mozilla/5.0 (Linux; U; Android 7.1.1; en-us; CPH1827 Build/N6F26Q) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/77.0.3865.116 Mobile Safari/537.36 HeyTapBrowser/15.8.3.1	HeyTapBrowser 15	Android 7
Mozilla/5.0 (Linux; U; Android 7.1.1; en-us; CPH1827 Build/N6F26Q) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/77.0.3865.116 Mobile Safari/537.36 HeyTapBrowser/15.8.2.1	HeyTapBrowser 15	Android 7
Mozilla/5.0 (Linux; U; Android 7.1.1; en-us; CPH1827 Build/N6F26Q) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/77.0.3865.116 Mobile Safari/537.36 HeyTapBrowser/15.8.0.1	HeyTapBrowser 15	Android 7
Mozilla/5.0 (Linux; U; Android 7.1.1; en-us; CPH1827 Build/N6F26Q) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/77.0.3865.116 Mobile Safari/537.36 HeyTapBrowser/15.7.8.1	HeyTapBrowser 15	Android 7
Mozilla/5.0 (Linux; U; Android 7.1.1; en-US; CPH1827 Build/N6F26Q) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 UCBrowser/12.14.0.1221 (SpeedMode) U4/1.0 UCWEB/2.0 Mobile Safari/534.30	UC Browser 12	Android 7
Mozilla/5.0 (Linux; U; Android 7.1.1; en-nz; CPH1827 Build/N6F26Q) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.88 Mobile Safari/537.36 HeyTapBrowser/15.8.5.1	HeyTapBrowser 15	Android 7