How do I use those two buttons to translate?

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How do I change the language?

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How do I adjust the volume?

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How do I switch to Wi-Fi mode?

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How do I connect to Bluetooth speaker or earphone?

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How do I display the lock screen?

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How do I find translation history?

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How do I add the phrases as [Favorite]?

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What is Sleep Settings? How does it work?

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How many system languages does Pocketalk W support and how do I change?

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How do I change the brightness level?

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How do I switch to China Mode?

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How do I reset?

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How do I register for Pocketalk Center?