Apple uses the Find My feature, which merged the old Find My iPhone and Find My iPhone to locate lost devices. However, not everyone knows that it can find a device offline and in sleep mode. Follow the text and understand How Apple manages to fetch an iPhone offlineand which branded devices support the feature.
Apple has the application called Buscar, which allows you to track Apple devices on a map, and can also mark them as lost. However, all this only works if the feature is enabled on the device🇧🇷
The most interesting thing about the application is that with it you can still track an iPhone or other item even when disconnected from the internet. Devices added to the Find My app network can be located wirelessly bluetooth🇧🇷 To work, the network of the Buscar app also needs to be activated on the device🇧🇷
Apple’s functionality uses a system called “crowdsourced localization”where the device in the user’s possession sends a signal to nearby Apple devices up to the last known position of the lost or subtracted gadget, even if they don’t belong to the user.
Also, if your device has a very low battery level, the device’s location is automatically sent to Apple. According to the company, the signal is end-to-end encrypted and completely anonymized in order to protect the privacy of all devices and users involved.

Which iPhones can be tracked by the Find My app?
The Find My app is only supported on iPhone 11 or later models. Regarding the operating system, the app can find offline Apple devices that have iOS 13 or higher.
Starting with iOS 15, the app’s network can locate an iPhone for up to 24 hours after it’s been turned off, or for up to five hours if it’s in power saving mode.
Can other Apple devices be found by Search?
Yes, Buscar can track beyond iPhone, iPad, iPod and Mac even offline🇧🇷 On these other devices, the app is compatible with iPadOS 13, macOS Catalina or higher installed.
AirPods, Apple Watch or other compatible Beat product that are paired with iPhone will be set up automatically when you turn on Find My iPhone. For these devices, Find My must also be enabled so that they can be found when they are turned off or disconnected.
AirTags and third-party products that are compatible and registered with Apple ID can also be found by Search, starting from iOS 14.5, iPadOS 14.5 and macOS Big Sur 11.1. The latest model of leather wallet with MagSafe for iPhone has an NFC chip that makes it possible to use the Find My app to locate it, activate lost mode and send notification if it gets loose from the device.

Yea, Is it possible to track a turned off iPhone🇧🇷 However, only on phones running iOS 15 and later. You also need to have an iPhone 11 or higher models.
https://tecnoblog.net/responde/como-a-apple-consegue-localizar-um-iphone-offline/