The Realme X3 SuperZoom has launched in Europe and India but it is yet to make its way to China. While there is no official confirmation regarding when that will happen, there is a high chance the Chinese variant will have support for 5G and come with a different chipset.
The Realme X3 SuperZoom is powered by a Snapdragon 855+ processor. While there are phones powered with that chipset with support for 5G, Realme decided to not go down that route. However, if the company plans on keeping the affordable price tag of the phone while adding support for 5G, it may have to go for a less-powerful processor.