THIS IS A PRECOMPILED BUILD / FIRMWARE FLASH AND IS SPECIFICALLY TO BE FLASHED AS FIRMWARE ON A PROXMARK 3 V4, USING ANY PC WITH LINUX OS ENVIRONMENT. IT SHOULD BE ALSO COMPILED WITH THE BUILD LOADED ...

^Top From official Proxmark3 wiki: In any case, you would need a USB-C to A or USB-OTG cable to connect Proxmark3 to your Android device. Some Android devices may not supply enough power (USB-OTG = ...