Most reputable third-party checks require the IMEI number, not the Serial Number, for carrier status checks.
For iCloud Lock and lost/stolen checks, use: serial number iphone check
Generally, serial numbers are printed on the back of phones and boxes. It is not as sensitive as an IMEI or Social Security number. However, you should still avoid posting it on public forums (like Reddit or social media) alongside photos of your device, as scammers could potentially use it to file fraudulent warranty claims or create fake identities for devices. Most reputable third-party checks require the IMEI number,
The serial number check revealed that the iPhone is still under warranty, activated, and not reported lost or stolen. This information can be useful for buyers, sellers, and owners of iPhones to verify the device's status. However, you should still avoid posting it on
If the serial number is correct, you will see the model name (e.g., iPhone 14 Pro). If the site says "We’re sorry, but this serial number is not valid," the device is likely a fake, a clone, or has had its internal serial number corrupted.