ARCore is a software development kit developed by Google that can be used to create augmented reality applications. ARCore uses three key technologies to integrate virtual content with the real world, the results of which can be seen through the phone's lens: "Six Degrees of Freedom": allows the phone to understand and track the relative position of the device. "Environmental Understanding": the phone can use this technology to detect the size and position of a horizontal surface such as the ground or a coffee table. The models support ARcore support AR feature.
AR feature: Augmented reality(AR) uses the existing real-world environment and puts virtual information—or even a virtual world—on top of it to enhance the experience.
Note: Only some realme models support ARCore. For more information, please refer to https://developers.google.com/ar/devices