iPhone Authenticity Checker

The checker returns up to five categories of information depending on the inputs you provide. If you enter a model number in the A-number format — for example A3290 or A2846 — the tool looks it up against a static database of Apple model identifiers and returns the exact iPhone model name and generation. If you enter a 12-character serial number from a device manufactured before 2021, the tool decodes the old Apple serial format to return the manufacturing factory location, the approximate year of manufacture, and the production half-year. Post-2021 serial numbers use a randomized format that does not encode factory or date information, so those return format validation only. If you enter a 15-digit IMEI, the tool validates it against the Luhn checksum algorithm, which catches transposition errors and completely fabricated numbers. A passing Luhn check confirms the IMEI is structurally valid but does not verify carrier blacklist status or activation lock — those require a network query to a carrier database or Apple's activation lock check page, which is outside the scope of a browser-only tool. If you visit the page on an iPhone, the tool also reads the device's screen resolution and device pixel ratio from the browser's screen object and cross-references it against a table of known iPhone logical resolutions to suggest which model or generation group matches. Practical tip: combine all three inputs — model number from Settings > General > About, serial number from the same menu, and the IMEI — for the most complete report, especially when verifying a used device before purchase.

Yes, the checker provides several useful signals when evaluating a used iPhone purchase. Validating the serial number format confirms that the device has a genuine Apple-format identifier rather than a fabricated string, which is a common sign of counterfeit or refurbished devices sold with non-Apple hardware. Decoding the serial number's factory and manufacture date lets you verify whether the seller's claimed purchase year matches the actual production date embedded in the serial. If a seller claims the phone is from 2022 but the serial decodes to a 2019 production date, that discrepancy warrants closer investigation. Matching the A-number from the device's Settings menu against the tool's model database confirms the exact variant, which matters for checking whether the device supports your carrier's specific LTE or 5G bands. Different A-numbers for the same iPhone model correspond to different regional radio configurations. The Luhn check on the IMEI confirms the identifier is structurally valid, but to check blacklist and activation lock status you should additionally visit checkcoverage.apple.com with the serial number and use a carrier-specific IMEI checker for blacklist status. The WikiPlus tool covers the local, no-upload portion of the verification. No data you enter is transmitted to any external server, which means you can safely check an IMEI or serial without that information being logged by a third party. Practical tip: cross-reference the serial number on checkcoverage.apple.com to confirm the device's original purchase country and remaining AppleCare coverage before completing the purchase.

All data in the checker is sourced from publicly documented Apple specifications and reverse-engineered serial number format documentation, compiled into a static lookup table embedded in the tool's JavaScript bundle. The A-number to model name mapping is derived from Apple's own developer and support documentation, which lists model identifiers for every iPhone sold. Apple publishes these identifiers at support.apple.com/en-us/111900 and similar pages for each product category. The factory and date decoding for pre-2021 serials is based on the serial number format that Apple used from approximately 2010 to early 2021. The factory code map, year character map, and production-half character map were reverse-engineered and documented by the developer community over many years. Apple never officially published the format but it was consistent enough across millions of devices to be reliably mapped. The screen resolution to model group matching uses Apple's published point resolution and device pixel ratio specifications for each iPhone model, which Apple documents in the Human Interface Guidelines and developer documentation. No live API call is made when you run a check. There is no backend database, no IMEI lookup service, and no activation lock query. The tool operates entirely from the static data compiled into the page at build time. This means the data reflects models up to the build date and will not include new models until the tool is updated. Practical tip: for models released in the past few months that may not yet be in the lookup table, cross-reference with Apple's official tech specs page at apple.com/iphone/compare.

The tool is designed exclusively for iPhones and does not support Android devices or tablets from any manufacturer. The three input methods — A-number model lookup, Apple serial number decoding, and IMEI Luhn validation — are all iPhone-specific in their data and decoding logic. The A-number database maps Apple's internal model codes, which have no equivalent in Android. The serial number decoder applies the Apple pre-2021 format structure, which is specific to Apple's manufacturing numbering system. Samsung, Google Pixel, OnePlus, Xiaomi, and other Android manufacturers each use proprietary serial number formats that encode different information in different positions. The screen resolution fingerprint detection reads the browser's screen.width, screen.height, and devicePixelRatio properties and matches them against a table of known iPhone logical resolutions. Android devices have a wide variety of screen resolutions, many of which overlap with iPhone resolutions at the same pixel dimensions but differ in aspect ratio or density class, making reliable identification impossible without model-specific data. IMEI Luhn validation is the one function that works for any phone including Android — the Luhn algorithm is a universal checksum standard used by all GSMA-compliant devices regardless of manufacturer. If you enter an Android IMEI, the Luhn validation will return a pass or fail correctly. For Android device verification, manufacturer-specific tools like Samsung's IMEI checker or Google's Find My Device provide the equivalent functionality for their respective ecosystems. Practical tip: use the IMEI Luhn check as a quick sanity test on any mobile device regardless of brand — a failed Luhn check on any IMEI is a reliable indicator of a typo or a fabricated number.