Latest Android 6 user agents:

User Agent Browser Device
Mozilla/5.0 (Linux; Android 6.0; Nexus 5 Build/MRA58N) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/43.0.7760.1561 Mobile Safari/537.36 Chrome Mobile 43 Nexus 5
Mozilla/5.0 (Linux; Android 6.0.1; SM-J500Y) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/106.0.0.0 Mobile Safari/537.36 Chrome Mobile 106 Galaxy J5 (2015)
WhatsApp/2.18.65 Android/6.0 Device/NOA-NOA_H4se WhatsApp 2 H4SE
WhatsApp/2.18.46 Android/6.0.1 Device/Xiaomi-Redmi_3S WhatsApp 2 Redmi 3S
WhatsApp/2.18.202 Android/6.0.1 Device/asus-ASUS_Z00AD WhatsApp 2 ASUS
WhatsApp/2.17.427 Android/6.0 Device/HTC-HTC_Desire_816 WhatsApp 2 Desire 816
WhatsApp/2.17.395 Android/6.0 Device/Meizu-M5_Note WhatsApp 2 M5 Note
UCWEB/2.0 (MIDP-2.0; U; Adr 6.1; pt-BR; Tecno_G628) U2/1.0.0 UCBrowser/9.7.0.520 U2/1.0.0 Mobile UC Browser 9 G628
UCWEB/2.0 (MIDP-2.0; U; Adr 6.1; en-US; Tecno_G628) U2/1.0.0 UCBrowser/9.7.0.520 U2/1.0.0 Mobile UC Browser 9 G628
UCWEB/2.0 (MIDP-2.0; U; Adr 6.1; en-US; Tecno_D9) U2/1.0.0 UCBrowser/9.7.0.520 U2/1.0.0 Mobile UC Browser 9 D9
UCWEB/2.0 (MIDP-2.0; U; Adr 6.0; ru; VOX_A10_3G_VS4002PG) U2/1.0.0 UCBrowser/11.1.1.1091 U2/1.0.0 Mobile UC Browser 11 VOX A10 3G
UCWEB/2.0 (MIDP-2.0; U; Adr 6.0; ru; PSP3510DUO) U2/1.0.0 UCBrowser/10.7.8.806 U2/1.0.0 Mobile UC Browser 10 Wize G3
UCWEB/2.0 (MIDP-2.0; U; Adr 6.0; ru; FS454) U2/1.0.0 UCBrowser/11.0.6.1040 U2/1.0.0 Mobile UC Browser 11 Nimbus 8
UCWEB/2.0 (MIDP-2.0; U; Adr 6.0; ru; FS407) U2/1.0.0 UCBrowser/11.0.6.1040 U2/1.0.0 Mobile UC Browser 11 Stratus 6
UCWEB/2.0 (MIDP-2.0; U; Adr 6.0; en-US; Tecno_A9900) U2/1.0.0 UCBrowser/9.7.0.520 U2/1.0.0 Mobile UC Browser 9 A9900
UCWEB/2.0 (MIDP-2.0; U; Adr 6.0; en-US; SUNNY2) U2/1.0.0 UCBrowser/10.6.8.732 U2/1.0.0 Mobile UC Browser 10 Sunny 2
UCWEB/2.0 (MIDP-2.0; U; Adr 6.0; en-US; PGN612) U2/1.0.0 UCBrowser/10.9.8.1006 U2/1.0.0 Mobile UC Browser 10 Allure A8 Plus
UCWEB/2.0 (MIDP-2.0; U; Adr 6.0; en-US; Lenovo_A7010a48) U2/1.0.0 UCBrowser/11.1.1.1091 U2/1.0.0 Mobile UC Browser 11 A7010a48
UCWEB/2.0 (MIDP-2.0; U; Adr 6.0; en-US; InnJoo_3) U2/1.0.0 UCBrowser/10.9.0.946 U2/1.0.0 Mobile UC Browser 10 3
UCWEB/2.0 (MIDP-2.0; U; Adr 6.0; en-US; Cinemax_Click) U2/1.0.0 UCBrowser/10.9.0.946 U2/1.0.0 Mobile UC Browser 10 Cinemax Click