Are you tying to root your Tecno Phantom A3? You can easily get it done in a matter of minutes. Among other things, rooting your device lets you get root access to system files and also lets you grant super-user permission to certain apps that require it to fully function.
To understand why you should root your device and other benefits you can derive from it, please check this post.
How to Root your Tecno Phantom A3 Using VRoot
1. First enable Developer Options on your device by going to Settings > About. Tap the build number 7 times to enable developer options.
2. Go to Settings > Developer Options. Turn on USB Debugging from here.
3. Download this file and unzip the content. Install PdaNet+ on your PC. Be sure your phone is disconnected before installing. At a point, you will be prompted for which driver to install, choose Others.
4. You will be prompted again to connect your phone via USB.
This will install the needed PdaNet+ app on your phone as well.
5. Install VRoot on your PC. Note that this app is in Chinese but you should install it just like you would install any other app on your PC.
6. Start the application and wait till it shows your phone is connected.
7. Hit the Root button and wait for a while.
9. Congratulations! your phone is rooted. Install SuperUser from Play Store and you’re done.
10. To confirm if your device is rooted, install Root Checker.
This should tell you your device is now rooted.