RRG Android App for use with Proxmark3 RDV4 and the blueshark addon
The app runs on a non-rooted phone.
You find the app on playstore RRG RFID Tools
Until some android issues is resolved with the RRG/Iceman repo, you must use a special android adapted firmware with your Proxmark3 RDV4.
Download and flash this one Compiled FW 12 August