Latest Android 4 user agents:

User Agent Browser Device
Mozilla/5.0 (Linux; Android 4.1.1; HUAWEI G510-0100 Build/HuaweiG510-0100) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/66.0.3359.126 Mobile Safari/537.36 Chrome Mobile 66 G510-0100
Mozilla/5.0 (Android 4.0.4; Mobile; rv:5.0) Gecko/5.0 Firefox/5.0 Firefox Mobile 5 Unknown
Mozilla/5.0 (Android 4.4.3; Mobile; rv:22.0) Gecko/22.0 Firefox/22.0 Firefox Mobile 22 Unknown
Mozilla/5.0 (Linux; Android 4.4.2) AppleWebKit/536.2 (KHTML, like Gecko) Chrome/40.0.816.0 Safari/536.2 Chrome 40 Unknown
Mozilla/5.0 (Linux; Android 4.0.3) AppleWebKit/533.1 (KHTML, like Gecko) Chrome/35.0.898.0 Safari/533.1 Chrome 35 Unknown
Mozilla/5.0 (Linux; Android 4.1.1) AppleWebKit/535.0 (KHTML, like Gecko) Chrome/39.0.801.0 Safari/535.0 Chrome 39 Unknown
Mozilla/5.0 (Linux; Android 4.4.2) AppleWebKit/536.2 (KHTML, like Gecko) Chrome/34.0.829.0 Safari/536.2 Chrome 34 Unknown
Mozilla/5.0 (Android 4.1; Mobile; rv:26.0) Gecko/26.0 Firefox/26.0 Firefox Mobile 26 Unknown
Mozilla/5.0 (Android 4.4.2; Mobile; rv:32.0) Gecko/32.0 Firefox/32.0 Firefox Mobile 32 Unknown
Mozilla/5.0 (Linux; Android 4.4.2; Tesla Build/KOT49H) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/56.0.2924.87 Mobile Safari/537.36 Chrome Mobile 56 Unknown
Mozilla/5.0 (Android 4.0.4; Mobile; rv:14.0) Gecko/14.0 Firefox/14.0 Firefox Mobile 14 Unknown
Mozilla/5.0 (Android 4.2.1; Mobile; rv:28.0) Gecko/28.0 Firefox/28.0 Firefox Mobile 28 Unknown
Mozilla/5.0 (Android 4.1.1; Mobile; rv:32.0) Gecko/32.0 Firefox/32.0 Firefox Mobile 32 Unknown
Mozilla/5.0 (Linux; Android 4.4.2; SM-T320 Build/KOT49H) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/40.0.2214.109 Safari/537.36 Chrome 40 Galaxy TabPRO 8.4" WiFi
Mozilla/5.0 (Linux; Android 4.2) AppleWebKit/535.2 (KHTML, like Gecko) Chrome/55.0.853.0 Safari/535.2 Chrome 55 Unknown
Mozilla/5.0 (Linux; Android 4.0) AppleWebKit/533.1 (KHTML, like Gecko) Chrome/14.0.807.0 Safari/533.1 Chrome 14 Unknown
Mozilla/5.0 (Linux; Android 4.1.1) AppleWebKit/532.1 (KHTML, like Gecko) Chrome/19.0.814.0 Safari/532.1 Chrome 19 Unknown
Mozilla/5.0 (Linux; Android 4.2) AppleWebKit/533.1 (KHTML, like Gecko) Chrome/56.0.889.0 Safari/533.1 Chrome 56 Unknown
Mozilla/5.0 (Android 4.4.1; Mobile; rv:10.0) Gecko/10.0 Firefox/10.0 Firefox Mobile 10 Unknown
Mozilla/5.0 (Android 4.3.1; Mobile; rv:53.0) Gecko/53.0 Firefox/53.0 Firefox Mobile 53 Unknown