User Agent

Mozilla/5.0 (Linux; Android 4.4.2; SM-G900F Build/KOT49H) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/30.0.0.0 Mobile Safari/537.36 wkbrowser 4.7.41 2004101 js 5.1.1 newfocus lng=en

This user agent belongs to WKBrowser. Keanu Lee developed this Browser. This Browser run on Android and it renders web contents with Blink on general Mobile Phone.

Browser - WKBrowser

WKBrowser

Version? @ 32 bit
DeveloperKeanu Lee
ParentWKBrowser Generic
Device TypeMobile Phone

Act as 

Crawler No
Fake No
Anonymized No

Device - Samsung

BrandSamsung
ModelSM-G900F
Platform android 4.4 (32 bit) by Google Inc
Mobile Yes
Tablet No

Capabilities

Rendering EngineBlink by Google Inc (a WebKit Fork by Google)
Pointingtouchscreen
Javascript Yes
CSS Yes Version: 3
Cookies Yes
Tables Yes
Frames Yes
IFrames Yes
Background Sounds No
Java Applets No
VB Script No
Activex No