Enter your IMEI number on these sites.
The activation date is the first time it was ever turned on. Resetting the phone wipes your data, but does not reset the internal hardware clock. how to check activation date of xiaomi phone
Enter your IMEI or Serial Number (S/N) and the verification code. Enter your IMEI number on these sites
If the page shows “No information found,” wait 24-48 hours after first setting up the phone. Xiaomi’s servers take time to register the activation. how to check activation date of xiaomi phone