Is there any compensation for Xiaomi mix4 anti-loss cancellation?

No compensation.

On Xiaomi MIX4, a major update has been made to the anti-loss mode, which keeps the network connected even if the SIM card is pulled out. Because the technical solution of this service does not comply with relevant national regulations, Xiaomi Mobile officially announced on August 13 that Xiaomi Mi MIX 4 has canceled the service.

According to Xiaomi, the cardless Internet service can prevent the SIM card from being forced to be replaced after the phone is lost. When a thief opens the SIM card slot, the phone will prompt to verify the phone password. Only after the password verification is passed can the SIM card be replaced. If you use other methods to forcibly remove the card slot, the phone still needs to enter the password.