The authorization code is also a serial number. The following is the query method of serial number:

Tools/raw materials

IPhone phone model iPhone8

IPhone system version ios 1 1.4. 1.

1, the phone found the setting option. Open "Settings" and drop down to see that there is a "General" that we choose to open.

2. Open "General" and find the first item "About this machine" on the panel.

3. After opening, you can see the "serial number" by pulling it down. That's a string of English numbers.