What is an IMEI Number?
IMEI stands for International Mobile Equipment Identity. It is a unique 15-digit identification number assigned to every mobile device manufactured globally. Think of IMEI as the passport number of your phone — no two devices in the world share the same IMEI number. This unique identifier allows mobile networks, manufacturers, and authorities to identify any specific device.
In 2026, IMEI is used for device tracking, warranty verification, blacklist checking, network unlock, and IMEI repair in mobile service centers.
IMEI Number Structure
A standard IMEI number has 15 digits with specific meaning in each section:
- Digits 1-8 (TAC) — Type Allocation Code: identifies the manufacturer and model
- Digits 9-14 (Serial Number) — Unique serial number for this specific unit
- Digit 15 (Check Digit) — Calculated verification digit using Luhn algorithm
Example IMEI: 352073098765432
How to Find Your IMEI Number
- Dial *#06# — Works on all phones instantly
- Settings → About Phone → IMEI Information
- Device box — Printed on barcode sticker
- Battery compartment — Sticker inside (removable battery phones)
- SIM tray area — Some models print IMEI near SIM slot
- Google account → android.com/find → device info
How to Verify IMEI is Valid
- Count digits — must be exactly 15 digits
- First digit cannot be 0
- Go to imei.info and enter your IMEI
- Website shows manufacturer, model, and specification
- Verify the details match your physical phone
IMEI Blacklist — What It Means
A blacklisted IMEI means the device has been reported stolen, lost, or unpaid by the carrier. Blacklisted phones:
- Cannot connect to mobile networks in countries that share blacklist databases
- May still work on WiFi for apps
- Cannot be legitimately unlocked by most services
- Should be reported to police if found
To check IMEI blacklist status, use imei.info, swappa.com, or your carrier official IMEI check tool.
IMEI in Mobile Repair
In mobile repair, IMEI issues arise when:
- Firmware flash erases NV data (IMEI shows as null)
- Phone shows "No Service" after flashing
- IMEI changes after ROM update (hardware mismatch)
IMEI repair tools available on this website restore the original IMEI using the number printed on the device box or back sticker, returning full network connectivity to the repaired device.
Conclusion
IMEI is the unique identity of every mobile device — essential for device verification, network access, warranty claims, and mobile repair operations. Always note your IMEI before any firmware flash operation. If IMEI is lost after flashing, use the model-specific IMEI repair tools available on this website to restore it.