I followed a YouTube video (https://www.youtube.com/watch?v=MtiUx_szKbI&t=1103s), using Unity on my Macbook and the 3D object appeared on the card I'm tracking.
However when I downloaded and installed as .apk into my Android phone, the 3D object couldn't appear.
WHAT COULD HAVE GONE WRONG HERE,
HAS ANYBODY FACE THIS BEFORE?
PLEASE HELP ME
YOU ARE MY ONLY HOPE!