Find lost phone using IMEI

Not possible using any service Apple offers. It may be possible by phone companies but it might require you get a police request which others have said may only be done in the case a a serious crime having been committed, not simply a misplaced device.

Read this support article about what to do if a iPhone or iPad is lost or stolen -->

If your iPhone or iPad was stolen - Apple Support

- The Find My service described in the article is the only recovery feature Apple offers. It must be set up before the device is lost.

- Note that if you remotely erase your device as instructed in this article, if you subsequently remove it from your account as in this article --> Check your Apple Account device list to find where you’re signed in - Apple Support , then according to this article --> How to remove Activation Lock - Apple Support you remove activation lock from the device. Do not remove it from your account. If you do then a finder or thief will have an unlocked device that can be used by another person.

You cannot find your phone using the IMEI number. That is what the Find My app is for and of course it would have had to be turned on first with an Apple Account signed in.