If the activation date is more than a few days before your purchase date, the device has been previously activated. This typically means:
Method 1: Check Directly via Device Settings (HyperOS & MIUI) how to check activation date of xiaomi phone
Open your phone app and dial *#06# . Your IMEI(s) and Serial Number (S/N) will pop up on the screen. If the activation date is more than a
The system will display a detailed results page showing: The system will display a detailed results page
Look for or Device Activation to see the date your phone first connected to the network. Method 3: Use your Google Account (Alternative)
The system will generate a report detailing your exact phone model, production date, and purchase/activation details. Look for the or Warranty Start Date entry. Because Xiaomi warranties typically begin the moment the device connects to the internet with a SIM card or Wi-Fi for the first time, the warranty start date serves as your official activation date. Method 2: Check the Box Sticker (Estimated Date)
It will display the purchase/activation details and whether the device is an official global version. 2. Services & Feedback App (Built-in)