nonsupport
xsx uses Qualcomm Snapdragon 820 processor, although this processor is powerful, but only support 4G network, at the time is still a flagship level of the processor, but in today's words is completely outdated.
xss uses Qualcomm Snapdragon 855 processing, the performance of this processor is far more powerful than the former, and its overall performance is nearly double that of the former, but it only supports 4G networks, not 5G networks.