Insert an active SIM card. Check the top status bar for signal indicators. If it shows signal bars but fails to register calls, you may need to clear the network cache or verify that the baseband version is not listed as "Unknown" in Settings > Device > Device Information .
: Most KaiOS devices utilize Qualcomm or Spreadtrum (SPD) chipsets. Repairing the IMEI requires interfacing directly with these hardware controllers using specialized PC-based software. 3. Common Repair Methods and Tools kaios imei repair work
If the device has USB debugging enabled (often requiring developer mode), you may be able to use ADB commands to write the IMEI, though this is rare on locked feature phones. 3. IMEI Rebuilding via Calibration Software Insert an active SIM card
Open (a sub-tool of QPST) and navigate to the Backup tab. Back up your phone's current .qcn file. : Most KaiOS devices utilize Qualcomm or Spreadtrum
MediaTek devices store network identity in the NVRAM. When this partition is wiped, the phone shows an invalid IMEI error. Method 1: Maui Meta Tool (Official Engineering Tool)
