Were to search a imei for. A used iPhone

While some older links in a search engine may suggest to try this and that,

they're out of date and later iOS Devices which require AppleID to function

cannot use those numbers to be accessed that way.

Avoid something that sounds too good to be true, if a 'great deal' appears

as though a dream come true. Those can become nightmares. The best

you could do would be to see if the actual iPhone or cellular iPad has no

activation lock. Without buying a brick -- that may have been stolen, too.

The process before buying a used iPhone begins with the original owner..

•What to do before you sell or give away your iPhone, iPad, or iPod touch - Apple Support

They have to erase their information and Apple ID correctly. And ready their

phone for another new owner, as stated in above article.~ As that's how you

are able to legally take ownership & start set-up with your own Apple ID.

Other related information links from Apple Support:

• Get help if your iPhone, iPad, or iPod touch is lost or stolen.
• Learn about Find My iPhone Activation Lock.

In any event...

Good luck & happy trails! 🙂

There is no international blacklist for IMEI, so checking one is not going to do you any good, like ckuan has indicated. That is only one thing to check for a used iPhone. The phone could have a clear IMEI and be Activation Locked, and there is nothing at all you can do about that if you cannot contact the original owner. I agree with ckuan, purchase from a reliable source, that will guarantee the device will work and be activated.

You're welcome.

You have a question somewhere?

Checking IMEI is a waste of time.

Buy from a reliable source/shop, you might end up wasting money instead of saving money.

..If you have a related follow-up question, should this one

need more clarity or other information, add to this thread..

Good luck!😎