iOS系統怎麽電影？
壹、在手機桌面上找到“設置”壹項，然後點擊進入。
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二、進入設置找到“通用”，然後點擊進入。
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三、進入通用找到“軟件更新”，然後點擊進入。
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四、進入軟件更新後，就會看見最新的ios12版本。
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五、下拉到底部，找到“自動更新”壹項，將其開關開啟即可更新ios12。
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