Xiaomi get imei by 12-symbols unlock-number

1. Prepare device

- Power-Off phone

Xiaomi New Keylock Policy 
Keylocks Like "44FM-RDCJ-H404-YS7" Cannot Check at Xiaomi Free Check 
you need to use paid services 
In Case of Any Issue Must Provide MI Check Report & Video Proof Showing:
IMEI
Keylock
activate mobile after reset
Without these, We Cannot Verify Your Order

- Hold Volume Up + Power buttons, when you will see MI on a screen, release Power button and contionue to hold Volume Up untill you will see Recovery mode
- Select Wipe Data and reset phone to factory defaults

DO NOT connect phone to Internet/WiFi !
- Click 10 times to Lock sign, you will see 12-symbols code (unlock-number)