: Indicates if the device is new (M), refurbished (F), or a replacement (N). Find it in Apple Support's guide .
But what exactly is a SEID? How is it different from a UDID or an ECID? And most importantly, seid iphone check link
Are you trying to of a specific link you received, or are you troubleshooting an Apple Pay issue? How to Quickly Remove Malware From an iPhone - McAfee : Indicates if the device is new (M),
The SEID is a unique identifier for the in your iPhone. It is primarily used for: Troubleshooting Apple Pay issues. seid iphone check link