1, open the Settings on your phone,
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2, click to enter the battery,
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3, click More Settings on the page,
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4, enter the page, click wireless reverse charging,
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5, click to open the wireless reverse charging button,
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The v40 is equipped with a 4000mAh battery and supports 55W wireless fast charge, but the wireless charger needs to be purchased by the user. You just need to place the v40 on the wireless charging base for wireless charging. In terms of charging, the v40 supports 66W wired charging, and the advanced version also supports 50W wireless fast charging.