IR Blaster is a very advanced controller technology that allows you to control other remote control devices without a remote easily. This is a fantastic technology. But to do this, your phone must have IR Blaster supported. If you are using Oppo Reno8 Pro + smartphone, you cannot use this feature because this phone does not support the IR Blaster feature.
Oppo Reno8 Pro + is an expensive smartphone which is why this smartphone has come up with many new features. But despite being so expensive, this smartphone does not support the IR Blaster feature. However, many phones use the IR Blaster feature through the app; if you want, you can also try. But actually, the phone officially doesn’t support this.