How to check the IMSI of Apple's mobile phone?

IMSI is relative to mobile phone cards, not mobile phones, and mobile phones correspond to IMEI.

If you want to check the IMEI of your mobile phone, there are several ways:

When buying a mobile phone, the serial number of IMEI is usually attached to the box;

In the settings of the mobile phone, find out the mobile phone, which contains information such as mobile phone IMEI;

Open the dial-up interface of the mobile phone and enter *#06# to display the IMEI of the mobile phone.