Short for “International Mobile Equipment Identity," your iPhone's IMEI is a unique number that identifies your specific device. No other device will share your IMEI, similar to social security numbers for people.
If you need to know how to check IMEI on iPhone, you're likely either selling your iPhone, troubleshooting an issue with Apple support, or trying to track down or block a stolen iPhone. The easiest way to check your iPhone's IMEI number is in your settings, but there are other ways to find this number without your iPhone if it's been stolen or lost.
