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How to repair Invalid imei in MTK Android devices(without PC)

*#*#4636#*#* – Testing menu (not directly for writing IMEI, but useful to check phone info).

Repairing your own IMEI is in most countries because you are restoring the original number assigned to that device. However, writing a different IMEI (clone of another phone) is illegal in virtually every jurisdiction and can lead to heavy fines or imprisonment.

You are not alone. This guide provides the working engineering codes and step-by-step methods to repair IMEI on any MediaTek MT6580 device (e.g., Tecno, Infinix, Itel, Samsung Galaxy Grand Prime, or Chinese brands).

Reboot your smartphone immediately. Once the phone restarts, dial *#06# to verify that your original IMEIs have been successfully restored.

Swipe sideways or tap to open the Connectivity tab.

*#*#3646633#*#* (If not working, try *#*#54298#*#* or *#*#225#*#* )

Here’s a concise review of the situation, based on common practices and tools used for MediaTek devices.

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Note: Replace YOUR_15_DIGIT_IMEI with the actual 15-digit number found on the sticker under your phone's battery or on the retail box. Step 4: Add the Space Trick (Crucial)