Certificate verification
Verify a Synapse certificate
Confirm a refurbished iPhone's certified check in seconds. No account, no login — just the reference code from the listing or the device.
A Synapse certificate shows non-identifying device facts only.
How it works
From scan to confirmed in three steps
Verification is public and instant, so a buyer never has to trust a screenshot.
Scan or enter the code
Scan the QR on the listing or device, or type the reference code (it looks like SYN-1A2B3C4D).
We check the live record
Synapse resolves the code to the server-issued record for that exact certified check.
You see validity and facts
You see whether the certificate is valid, plus non-identifying device facts and the inspection summary.
Buying a used iPhone?
Learn what a Synapse certificate proves and how to read one before you buy.
Selling used iPhones?
Run a full 50-point certified check and attach a verifiable certificate to every device.