А, имеется в виду рандомизация при скане vs рандомизация при подключении?
Privacy: MAC Randomization
Starting in Android 8.0, Android devices use randomized MAC addresses when probing for new networks while not currently associated with a network. In Android 9, you can enable a developer option (it's disabled by default) to cause the device to use a randomized MAC address when connecting to a Wi-Fi network.
In Android 10, MAC randomization is enabled by default for client mode, SoftAp, and Wi-Fi Direct.