I followed all steps in this article trying to change my mac address. https://geekeasier.com/change-mac-address-in-android-devices-without-root/4792/#comments.
Then when I entered
ip link set wlan0 address XX:XX:XX:YY:YY:YY ,it shows
request send failed:permission denied.
I was using mac address generator and didn't change the address prefix,I tried turn wifi on and off all still didn't work, don't know where do I go wrong.
wlan0 above should be something else?
Or there is something I have to do with phone first?