Как подключить функцию «украденный айфон» если его не подключают к сети

Thieves are very smart and most often put stolen phones in a Faraday Bag, which prevents the phone from connecting with a network. The reality is most stolen phones are never found.

See what you can do about a stolen phone here, but the chances are you'll never see the phone again --> If your iPhone or iPad was stolen - Apple Support

NOTE: Apple will never contact you about a lost or stolen device. If you receive any message saying it's from Apple and they just need you to validate your account, DON'T fall for it. It's a scam designed to get you to provide your account details so they can either use the phone for themself or to sell it.