Battery capacities leaked for the Huawei Mate 30 and Mate 30 Pro
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The Huawei Mate 30 and Mate 30 Pro could be unveiled by Huawei on September 19th. Recently a heavily disguised Mate 30 Pro was photographed riding the subway with its circular camera module hidden by a plastic door. The 6.7-inch notched AMOLED screen features a 'waterfall display' with the edges dropping down at an 88-degree angle making it appear as though there are no side bezels when viewing the screen straight-on. The phone will be powered by the homegrown Kirin 990 SoC, a 7nm chipset designed by Huawei's HiSilicon unit and manufactured by foundry TSMC.

The Huawei Mate 30 Pro will allegedly use this 4500mAh battery
Huawei Mate 30 and Mate 30 Pro could support 25W wireless charging and 55 W wired charging
The 7% bump for the Mate 30 Pro battery and the 5% hike for the one in the Mate 30 are certainly needed these days thanks to the reverse wireless charging feature. This allows the back of a phone to be used as a wireless charging pad and charge up earbuds and even compatible phones like the Apple iPhone 8 and up. The host battery "shares" some of its power with the device lying on its back which is why having this additional battery capacity will surely be welcome by owners of the Mate 30 and Mate 30 Pro. Samsung offers this feature, calling it Wireless PowerShare, with the handsets that make up the Galaxy S10 and Galaxy Note 10 series. Speaking of wireless charging, there is speculation that the Mate 30 and Mate 30 Pro will support 25W wireless charging, which would be the fastest such speed found on a smartphone. And both models are said to support 55W wired charging.

4200mAh battery reportedly earmarked for the Huawei Mate 30
Had Huawei not found itself on the U.S. Commerce Department's Entity List in May, the company most likely would have been riding the successful launch of the Mate 30 and Mate 30 Pro to top Samsung and become the world's largest smartphone manufacturer. Huawei delivered 206 million handsets last year placing it third behind Samsung and Apple. During the first quarter, its global shipments increased 50.3% to 59 million units moving it past Apple into second place. For the second quarter, Huawei shipped another 59 million phones giving it a total of 118 million delivered during the first half of this year. While many firms would be thrilled with this, Huawei traditionally reports a sequential gain in shipments from the first quarter to the second quarter; the fact that phone deliveries were flat over this period indicates that the U.S. supply chain ban is having a detrimental effect on Huawei's smartphone business.
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