An ESN (Electronic Serial Number) is a unique identifier tied to all cellular devices. No two devices should ever have the same ESN, and reviewing this number is one of the most important steps in our listing review process. Thus, it's crucial to ensure that you provide the proper ESN when creating a listing on Swappa.

ESNs can be found in a few different formats, but the most common is the 15-digit IMEI (International Mobile Equipment Identity). However, some older mobile devices may only have an MEID (Mobile Equipment Identifier).

If you'd like to check the status of the ESN tied to your device, feel free to use our free ESN check service here! If you need a hand locating the ESN tied to your device, please review our FAQ page here.

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Swappa makes it safe and easy to buy and sell used phones and quality tech devices. We have a no junk policy and our support team actually reviews and approves each listing. This keeps scammers away so you can buy with confidence. Read more on our blog.

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