Latest Android 4 user agents:

User Agent Browser Device
Mozilla/5.0 (Linux; U; Android 4.1.2; fr-fr; GT-I9305-ORANGE/I9305XXBMF1 Build/JZO54K) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 Mobile Safari/534.30 Android Browser Galaxy S III LTE
WhatsApp/2.17.427 Android/4.4.4 Device/Xiaomi-2014811 WhatsApp 2 Hongmi 2 4G
WhatsApp/2.17.427 Android/4.4.2 Device/azumi-A40C WhatsApp 2 A40C
WhatsApp/2.16.259 Mozilla/5.0(Android/4.3 Device/GalaxyS3) AppleWebKit/537.36 (KHTML, like Gecko) WhatsApp 2 Unknown
WAFA/1.2.10 (Linux; Android 4.1; Winamp) Replicant/1.0 Unknown Unknown
VOTO VT888_TD/Linux/3.4.39 Android/4.3 Release/08.15.2013 Browser/AppleWebkit534.30 Mobile Safari/534.30 MicroMessenger/5.4.0.66_r807534.480 NetType/WIFI WeChat 5 VT888
User-Agent: stagefright/1.2 (Linux;Android 4.4.2) Unknown Unknown
UCWEB/2.0 (MIDP-2.0;U;Adr 4.4.2;en-US;Venus_4) U2/1.0.0 UCBrowser/10.7.8.806 U2/1.0.0 Mobile UC Browser 10 Venus 4
UCWEB/2.0 (MIDP-2.0; U; Adr 4.4.4; ru; ZTE_Blade_Q_Lux) U2/1.0.0 UCBrowser/11.1.2.1113 U2/1.0.0 Mobile UC Browser 11 Blade Q Lux
UCWEB/2.0 (MIDP-2.0; U; Adr 4.4.4; ru; SM-J100FN) U2/1.0.0 UCBrowser/10.6.0.706 U2/1.0.0 Mobile UC Browser 10 Galaxy J1
UCWEB/2.0 (MIDP-2.0; U; Adr 4.4.4; ru; Lenovo_A858t) U2/1.0.0 UCBrowser/9.5.1.494 U2/1.0.0 Mobile UC Browser 9 A858t
UCWEB/2.0 (MIDP-2.0; U; Adr 4.4.4; id; GT-S5360) U2/1.0.0 UCBrowser/10.7.2.757 U2/1.0.0 Mobile UC Browser 10 Galaxy Y Hello Kitty
UCWEB/2.0 (MIDP-2.0; U; Adr 4.4.4; en-US; XT1022) U2/1.0.0 UCBrowser/9.5.1.494 U2/1.0.0 Mobile UC Browser 9 Moto E
UCWEB/2.0 (MIDP-2.0; U; Adr 4.4.4; en-US; SM-G318HZ) U2/1.0.0 UCBrowser/11.0.0.1016 U2/1.0.0 Mobile UC Browser 11 Galaxy V Plus
UCWEB/2.0 (MIDP-2.0; U; Adr 4.4.4; en-US; Lenovo_K80M) U2/1.0.0 UCBrowser/9.7.0.520 U2/1.0.0 Mobile UC Browser 9 K80M
UCWEB/2.0 (MIDP-2.0; U; Adr 4.4.4; en-US; Lenovo_A6800) U2/1.0.0 UCBrowser/11.0.6.1040 U2/1.0.0 Mobile UC Browser 11 A6800
UCWEB/2.0 (MIDP-2.0; U; Adr 4.4.2; ru; ZTE_T220) U2/1.0.0 UCBrowser/10.1.4.573 U2/1.0.0 Mobile UC Browser 10 T220
UCWEB/2.0 (MIDP-2.0; U; Adr 4.4.2; ru; Zera_U) U2/1.0.0 UCBrowser/11.0.0.1016 U2/1.0.0 Mobile UC Browser 11 Zera U
UCWEB/2.0 (MIDP-2.0; U; Adr 4.4.2; ru; Zera_F) U2/1.0.0 UCBrowser/11.1.0.1041 U2/1.0.0 Mobile UC Browser 11 Zera F
UCWEB/2.0 (MIDP-2.0; U; Adr 4.4.2; ru; Lenovo_S856) U2/1.0.0 UCBrowser/9.7.0.520 U2/1.0.0 Mobile UC Browser 9 S856