Last year, a chip breakthrough put Huawei on top of the Chinese smartphone market. Now it is rolling out its newest phone, the Mate 70 series.

SINGAPORE—Huawei Technologies plans to roll out its most advanced domestically made phone chip, people familiar with the matter said, showing how the company is able to make strides in semiconductors despite U.

The Chinese technology giant is set to release its new Mate 70 smartphones with software and hardware developed locally.