Every mobile device is identified by a unique IMEI number, which allows carriers to authenticate it on the network. This 15-digit code ensures your phone can make calls, send texts, and access mobile data securely.
IMEI and Security
A valid IMEI protects both users and networks. Carriers can track and block lost or stolen devices, preventing unauthorized access and keeping networks safe.
What Happens Without a Valid IMEI?
If an IMEI is missing or corrupted, the phone may struggle to connect to networks, be denied service, or even be blacklisted. This reduces the device’s functionality, lowers resale value, and can affect access to future software updates.
On Samsung devices, repairing or modifying the IMEI may require root access, while in North America, bootloader restrictions make the process more complex. To ensure compatibility, technicians should always check the list of supported versions on the Chimera Tool website before starting.
Common Causes of IMEI Issues
Even though the IMEI number is meant to be permanent, there are several situations where it can be lost, corrupted, or overwritten.
Software-Related Problems
A failed update or an incomplete flash can overwrite the IMEI storage area, leaving the device without a valid identifier. In some cases, rooting or using unauthorized tools may also compromise the IMEI, causing the phone to appear as “null” or “unknown” to the network.
Hardware and Unauthorized Tools
Motherboard replacements or internal repairs can also affect the IMEI if not performed correctly. In other cases, using unofficial or poorly built tools may damage the IMEI, making it unreadable by the network.