If the SEID field in your Settings app is completely blank, your phone has a hardware issue. A blank SEID usually means the logic board or the NFC chip is damaged. Apple Pay will not function on a device with a missing SEID. Verification Failures
When you add a bank card to Apple Pay, your iPhone sends the card issuer its SEID. The bank then registers this specific device for future contactless payments. For a payment to be processed, the phone sends a transaction code that includes the SEID, ensuring that the transaction is being authorized by a registered and trusted device.
Apple does not provide any external or online "link" to check an SEID. The only way to view your SEID is directly on your device. The phrase "SEID iPhone check link" is likely a misinterpretation of the process, which is: seid iphone check link
Look specifically for "Clean" vs "Blacklisted" status. ⚠️ Why You Should Never Skip the Check
Unlike IMEI or carrier lock status, Apple does not publish SEID databases to public APIs. Third-party tools often show placeholder data. The Official Verification Method If the SEID field in your Settings app
Have you successfully used an SEID check link for a specific purpose? Share your experience in the comments below (but never paste your actual SEID!).
You can find your SEID by navigating to Settings > General > About > SEID on your device. The Scam: Fake "SEID iPhone Check" Links Verification Failures When you add a bank card
Most third-party services asking for a "check link" actually want your UDID , not your SEID. For example, to install a beta iOS profile or sign an app, developers generate a https://... link that captures your UDID via a mobileconfig file. The SEID is rarely needed outside of NFC/payment contexts.