oh man terrible, this night i went from 4,19.1 tot the new update 4.19.2. And my android device is suddenly not recognized anymore. This is so typical ue4 sometimes, drives me crazy. I tried allready so many things, but its seems another waisted day. Has anyone have the same today? And a solution 
Hey wontonanimalchin!
Are you sure you have the proper drivers installed and the SDK/NDK up to date?
Cheers!
thanks for the reply. it worked out by installing the everyting not using the folder in the 4.19 project, but installing codeworks1r7.