"MediaTek is expected to launch its second sub-6 GHz 5G chip next week to enhance its deployments in a segment that is set to be the major focus of the telecom market before the arrival of mmWave technology. But it has already made plans to launch its first mmWave 5G chip in the second half of 2020. With 5G smartphones set to see explosive shipment growth next year, demand for various related components are also expected to soar.
Mediatek's entry into the 5G chipset market is expected to lower the devices' BOM cost. However, because mmWave requires more complex technology, there is some doubt about the maturity of its first product." – Sujeong Lim