Without a valid IMEI, the device cannot register on any cellular network, rendering SIM cards useless. How to Use MTK IMEI Repair Tools
Type your original 15-digit IMEI 1 and IMEI 2 into the respective fields. mtk imei v30
Some users attempt to change a blacklisted IMEI to regain network access. , as it is illegal in many jurisdictions (e.g., FCC regulations in the US, Ofcom in the UK). Without a valid IMEI, the device cannot register