Frequently Asked Questions

IMEI (International Mobile Equipment Identity) is a unique 15-digit number that identifies every mobile phone, tablet, or cellular device. It is the device's "fingerprint."

Common uses: (1) tracking lost or stolen devices, (2) verifying authenticity, (3) checking warranty status, (4) confirming carrier lock status.

Method 1 (Fastest): Dial *#06# on your phone — the IMEI displays immediately.

Method 2 (Settings): Android → Settings → About Phone → Status; iPhone → Settings → General → About.

Method 3 (Other sources): Original box, SIM tray, purchase receipt, or original email confirmation.

IMEI: 15-digit number, globally unique, used for GSM/WCDMA/LTE devices.

Serial Number (SN): Manufacturer-specific (Apple uses 12-character, Samsung uses 11-digit, etc.).

MEID: 14-character hex, used mainly for legacy CDMA devices (older Verizon phones).

Tip: For Apple devices, use the serial number for best results. For Android, use the IMEI.

IMEICheck provides free basic checks (model, color, storage, production date, warranty status).

Premium checks (detailed iCloud activation lock, GSX full report, blacklist) cost ¥0.3 to ¥1.5 per query. New users get free query credits upon registration.

A "blacklisted" IMEI means the device was reported as lost, stolen, or has unpaid bills by the carrier or manufacturer. Blacklisted devices cannot make/receive calls or use mobile data.

⚠️ Always verify blacklist status before purchasing a used phone.

Basic (free): Model, color, storage, production date, warranty status.

Premium: iCloud activation lock, SIM-lock status, GSX full configuration (original country, activation policy, original carrier), blacklist status, refurbished flag, in-warranty status.

Technically yes, with special flashing tools, but it is illegal in most countries. Tampered devices lose warranty and may be remotely locked by Apple or other manufacturers.

IMEICheck detects hardware/IMEI mismatches and flags tampered devices.

Take three immediate steps:

1. File a police report with the IMEI;
2. Contact your carrier to blacklist the IMEI (blocks cellular use);
3. For iPhones, log into iCloud and enable "Lost Mode" or "Erase iPhone".

Note: The IMEI alone cannot remotely locate your phone.

Yes. As long as you have the IMEI number (from the box, receipt, email, or any document), you can query all device information. IMEICheck does not require physical access to the device.

No. The IMEI identifies the device hardware. The SIM card number (ICCID) identifies the SIM card.

A phone can use different SIM cards over time, but its IMEI never changes.

Yes. IMEICheck cross-references IMEI, serial number, and GSX database to detect:

• Refurbished phones sold as new;
• Cloned devices with tampered IMEIs;
• Counterfeit brands (e.g., fake iPhones running modified iOS skins).

After entering your IMEI, the result shows:

• SIM Lock status (Locked / Unlocked);
• Original carrier (e.g., AT&T, T-Mobile, Vodafone);
• Whether it can accept any carrier SIM.

iPhones additionally show "Activation Lock" (separate from SIM lock).

Yes. IMEICheck uses HTTPS encryption, does not link IMEI queries to your personal identity, and uses query logs only for anti-abuse and aggregate statistics.

See our Privacy Policy for full details.