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.

Chinese tech giant Huawei on Tuesday unveiled its first smartphone equipped with a fully homegrown operating system, a key test in the firm's fight to challenge the dominance of Western juggernauts.

Huawei has fully developed its own operating system to compete with Google’s Android and Apple’s iOS, a first for a Chinese company.

Chinese tech giant Huawei on Tuesday launched its first smartphone equipped with a fully homegrown operating system, a key test in the firm's fight to challenge the dominance of Western juggernauts. Apple's iOS and Google's Android are currently used in the vast majority of mobile phones,