Latest Android TV 4 user agents:

User Agent Browser Device
Mozilla/5.0 (Linux; U; Android 4.4.4; SmartTV Build/KTU84P; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/33.0.0.0 Safari/537.36 OPR/54.0.2254.55871 Opera 54 Unknown
Mozilla/5.0 (Linux; U; Android 4.4.4; SmartTV Build/KTU84P; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/33.0.0.0 Safari/537.36 OPR/51.0.2254.150807 Opera 51 Unknown
Mozilla/5.0 (Linux; U; Android 4.4.4; Smart TV Build/20181129_084938; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/33.0.0.0 Safari/537.36 OPR/47.0.2254.146760 Opera 47 Unknown
Mozilla/5.0 (Linux; U; Android 4.4.4; MStar Android TV Build/KTU84P; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/33.0.0.0 Safari/537.36 OPR/60.0.2254.63611 Opera 60 Unknown
Mozilla/5.0 (Linux; U; Android 4.2.2; zh-cn; LG Android TV Build/JDQ39) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 Safari/534.30 Android Browser Android TV
Mozilla/5.0 (Linux; U; Android 4.2.2; cs-cz; EVOLVEO Smart TV box Q4 Build/JDQ39) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 Safari/534.30 Maxthon/4.1.4.2000 Maxthon 4 Smart TV box Q4
Mozilla/5.0 (Linux; U; Android 4.2.1; en-en; MStar Android TV Build/JOP40D) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 Mobile Safari/534.30 Android Browser Unknown
Mozilla/5.0 (Linux; Android 4.4.4; Yuno Shell SmartTV) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/78.0.3904.90 Safari/537.36 Chrome 78 Unknown
Mozilla/5.0 (Linux; Android 4.4.4; YASIN Android TV) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/76.0.3809.111 Safari/537.36 Chrome 76 2K Smart TV
Mozilla/5.0 (Linux; Android 4.4.4; X.VISION Android TV) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.112 Mobile Safari/537.36 Chrome Mobile 74 Unknown
Mozilla/5.0 (Linux; Android 4.4.4; SmartTV Build/KTU84P) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.111 Safari/537.36 OPR/46.1.2246.127339 Opera 46 Unknown
Mozilla/5.0 (Linux; Android 4.4.4; Smart TV Build/20200715_232528) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/33.0.0.0 Safari/537.36 Chrome Webview 33 Unknown
Mozilla/5.0 (Linux; Android 4.4.4; Smart TV Build/20190227_151457) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/33.0.0.0 Safari/537.36 Chrome Webview 33 Unknown
Mozilla/5.0 (Linux; Android 4.4.4; MStar Android TV) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/81.0.4044.138 Mobile Safari/537.36 Chrome Mobile 81 Unknown
Mozilla/5.0 (Linux; Android 4.4.4; MStar Android TV) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/80.0.3987.149 Safari/537.36 Chrome 80 Unknown
Mozilla/5.0 (Linux; Android 4.4.4; MStar Android TV) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/78.0.3904.108 Safari/537.36 Chrome 78 Unknown
Mozilla/5.0 (Linux; Android 4.4.4; MStar Android TV) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/77.0.3865.116 Safari/537.36 EdgA/46.06.2.5160 Microsoft Edge 46 Unknown
Mozilla/5.0 (Linux; Android 4.4.4; MStar Android TV) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/75.0.3770.101 Safari/537.36 Chrome 75 Unknown
Mozilla/5.0 (Linux; Android 4.4.4; MStar Android TV) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/73.0.3683.90 Safari/537.36 Chrome 73 Unknown
Mozilla/5.0 (Linux; Android 4.4.4; MStar Android TV Build/KTU84P) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/33.0.0.0 Safari/537.36 Chrome Webview 33 Unknown