Huawei Technologies Co unveiled on Thursday its latest foldable smartphone Pura X, which is the first to run its proprietary operating system HarmonyOS 5, as the Chinese tech company steps up push to revive its smartphone business.

The Pura X features a 6.3-inch display when fully unfolded, with a 16:10 aspect ratio that provides a more expansive screen area compared to many conventional smartphones.

The device folds in half into a compact square and has a 3.5-inch display with a camera at the front.

The model is part of Huawei's latest push to launch more unusual devices in an effort to differentiate itself from rivals. It once unveiled a trifold smartphone.