Repair and Fix IMEI number on Vivo X20 / X21 [PD1709F/PD1728F]

Are you a Vivo X20 and X21 (PD1709F / PD1728F) 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, we’ve provided the full guide on How to Repair unknown IMEI baseband on the Vivo X20 / X21 (PD1709F / PD1728F) device easily.

Now, talking about the IMEI (International Mobile Equipment Identity) number, it’s a unique 15-digit code that precisely identifies the device model whether you’ve used a SIM card or not. It’s worth mentioning that each and every IMEI number is unique and individually assigned to each and every mobile phone worldwide. You can also check the IMEI number on any phone by typing the *#06# on the dialer or Phone app.

We all know that a SIM card can be changed easily from a mobile phone. Therefore, the IMEI number comes in handy to track any particular device across the globe. Now, if you want to use a mobile device to use a SIM then it’s necessary to work the IMEI number properly. Meanwhile, the IMEI number can get corrupted or invalid or null while flashing any third-party firmware or any custom file on your device. Therefore, you should fix that issue for your Vivo X20 / X21 model.

Steps to Repair and Fix IMEI number on Vivo X20 / X21

Here you will get the easy guide to repair and restore the IMEI number on your Vivo X20 / X21 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.

Pre-Requirements:

• This guide and QCN file are for the Vivo X20 / X21 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.