If you're having trouble finding your iPhone's serial number using the search tool on the Device Performance Litigation site, here's how you can track down your old serial number.

For instance, the iPhone 14 Pro sold in the U.S. that offers mmWave capabilities has a model number of A2650, while the A2889 version sold in Canada supports only sub-6GHz 5G.

If you happen to have an iPhone 4s or earlier you can look on the SIM tray for your serial number. Another option to find your serial number is to look at the back of the original box if you have ...