User Agent

[FBAN/FB4A;FBAV/545.0.0.43.63;FBBV/866994124;FBDM/{density=3.0,width=1080,height=2292};FBLC/th_Qaau_TH;FBRV/872480009;FBCR/AIS;FBMF/INFINIX;FBBD/Infinix;FBPN/com.facebook.katana;FBDV/Infinix X670;FBSV/13;FBOP/19;FBCA/arm64-v8a:;]

This user agent belongs to Facebook App. Facebook developed this Application. it renders web contents with WebKit on general Mobile Phone.

Application - Facebook App

Facebook App

Versionunknown
DeveloperFacebook
ParentFacebook App
Platform -
Device TypeMobile Phone

Act as 

Mobile Yes
Tablet No
Crawler No
Fake No
Anonymized No

Capabilities

Rendering EngineWebKit by Apple Inc (For Google Chrome, iOS (including both mobile Safari, WebViews within third-party apps, and web clips), Safari, Arora, Midori, OmniWeb, Shiira, iCab since version 4, Web, SRWare Iron, Rekonq, and in Maxthon 3.)
Pointingtouchscreen
Javascript Yes
CSS Yes Version: 3
Cookies Yes
Tables Yes
Frames Yes
IFrames Yes
Background Sounds No
Java Applets Yes
VB Script No
Activex No