User Agent

Dalvik/2.1.0 (Linux; U; Android 11; vivo 1907 Build/RP1A.200720.012) [FBAN/Orca-Android;FBAV/564.0.0.42.89;FBPN/com.facebook.orca;FBLC/en_US;FBBV/984961990;FBCR/TM;FBMF/vivo;FBBD/vivo;FBDV/vivo 1907;FBSV/11;FBCA/arm64-v8a:null;FBDM/{density=3.0,width=1080,height=2141};FB_FW/1;]

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

Application - Facebook App

Facebook App

Version? @ 32 bit
DeveloperFacebook
ParentFacebook App for Android
Device TypeMobile Phone

Act as 

Crawler No
Fake No
Anonymized No

Device - vivo

Brandvivo
Model1907
Platform android (32 bit) by Google Inc
Mobile Yes
Tablet 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