Huawei's consumer CEO, Richard Yu, revealed the device onstage at Mobile World Congress on Sunday.
Like the Galaxy Fold, the Huawei Mate X looks like a normal smartphone while folded up, but then unfolds to become a tablet-like device.
Yu took shots at both the iPhone XS and the Galaxy Fold, noting that Mate X is much bigger. Its flexible OLED display measures 6.6 inches while folded up, and 8 inches when unfolded. That compares to the Fold which is 4.6 inches when folded up, and 7.3 inches when in tablet mode. Yu also emphasised that the Mate X will be completely flat when folded, with no gap between the different screens, thanks to its innovative and complex hinge.
The Mate X will also work with 5G networks, when they arrive, out of the box.
The Mate X doesn't have a hole-punch in the display for the camera, nor does it have a camera notch. Instead, the cameras are housed on a side panel. Yu didn't dig into the cameras' capabilities, which might indicate some compromise on Huawei's usual high standards for its snappers.
Mate X users will be able to run multiple apps simultaneously while the device is in tablet mode, and it's powered by a 4,500mAH battery.
All of that means the Mate X does come for a massive price tag of 2,299, compared with 2,000 for the Galaxy Fold. Yu said the Mate X would be available from the middle of 2019, although it's likely the device won't be available in the US for now.
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