Vivo rarely has a presence at MWC, but this year it bucked that trend in a big way, with the reveal of its next flagship phone, the X300 Ultra, alongside an upgraded telephoto extender lens and professional camera cage. The company isn't ready to launch the handset just yet - or even reveal very many of its specs - but gave us an early look at what it's cooking up; that smartphone-sized 400mm lens is wild to behold in person. Vivo also confirmed that whenever it does arrive, it will be the first Ultra to go on sale outside China.
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Speeding up virtual memory。新收录的资料是该领域的重要参考
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