How to Repair and Fix IMEI baseband on Xiaomi Mi A3 [QCN File]

Are you a Xiaomi Mi A3 device user and facing issues with the invalid IMEI or unknown IMEI baseband? Then don't worry. We got you covered. Here in this guide,...

Abd Razaaq

Last updated on December 1, 2025

Abd Razaaq

Author

I'm a Tech Content Writer and Full-Time blogger. Since I love Android and Google's device, I started my career in writing for Android OS and their features. This led me to start "GetDroidTips". I have completed Master of Business Administration at Mangalore University, Karnataka.

Xiaomi Mi A3 Specifications: Overview

The Mi A3 features a 6.1-inch HD+ OLED display with 720×1560 pixels resolution having a 19.5:9 aspect ratio. It’s protected by Corning Gorilla Glass 5 with dot drop notch. This device is powered by 2.0GHz octa-core Qualcomm Snapdragon 665 chipset with 4GB of RAM. The storage is 64GB inbuilt which can be expandable up to 256GB via a MicroSD card.

The device runs on the Android 9.0 Pie Stock UI out-of-the-box. It packs a non-removable Li-Po 4,030 mAh battery with Qualcomm Quick Charge 3.0 fast charging support. Most importantly, it has an in-display Fingerprint sensor and AI Face Unlock feature.

Xiaomi Mi A-series devices always offer great camera quality like any affordable flagship killer camera. This device packs a 48MP primary camera (f/1.79), a secondary 8MP camera (f/2.2), and a third 2MP camera. The rear camera setup has autofocus and an LED flash as well. While the front features a 32MP selfie camera with an f/2.0 aperture lens along with AI modes.

In terms of the connectivity options, it includes Wi-Fi 802.11 a/b/g/n/ac, GPS, Bluetooth 5.0, IR Blaster, USB Type-C port, FM Radio, 3G/4G LTE, etc. Sensors on the phone include accelerometer, ambient light, gyro, proximity, and fingerprint sensor. The Xiaomi Mi A3 measures 153.48×71.85×8.50 mm and weighs 173.80 grams. It’s available in three colors such as Not Just Blue, More Than White, and Kind of Gray color.

Steps to Repair and Fix IMEI number on Xiaomi Mi A3

Here you will get the easy guide to repair and restore the IMEI number on your Xiaomi Mi A3 device by using the QCN Rebuilder Tool. This tool is free of cost and easy to use even if you’re new to this process. Now, before heading over to the guide, let’s follow all the requirements and download links below.

Now, let’s check out the download links and requirements below.

Download Files:

Download Flash tool: QPST or QFIL Tool
Xiaomi Mi A3 QCN File (zip) – Link
Download QCN Rebuilder Tool
Download Xiaomi USB Drivers

Pre-Requirements:

This guide and QCN file are for the Xiaomi Mi A3 model only.
Your device should be charged up to 50% at least.
A PC/Laptop and a USB cable are required.
Keep a full backup of the device data before doing anything.
Enable USB Debugging. Check the video guide.
Download all the files and tools from above.

Disclaimer:

Flashing IMEI manually is not legal in some of the regions. You should check with the law of your region about it. GetDroidTips only provides guides. You will be solely responsible if you proceed.

IMEI Rebuilding and Restore Guide

After downloading, install and run the QCN Rebuilder tool on your PC.
Click on Open file and select the Xiaomi Mi A3 QCN file.
Now, replace the IMEI with the original IMEI number.
Click on Rebuild.
Next, connect your phone to a PC using a USB cable.
Open dial pad on your device and type this code *#*#717717#*#* or use any method to enable diagnostic mode.
If the above code doesn’t work, use CMD on your PC by following the commands below.

adb shell
su
setprop sys.usb.config rndis,diag,adb

Then run the QPST tool on your computer.
Click on the Restore tab > select the rebuilt QCN file > click on Restore.
You’re done.

That’s it, guys. We hope you’ve found this guide useful for your Xiaomi Mi A3. If you’re facing any issues, feel free to ask in the comments below.