工具/材料：蘋果7plus
1、首先將蘋果手機打開，然後點擊桌面裏的設置。
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2、打開設置後，點擊裏面的通用選項，進入到下壹個窗口。
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3、在通用設置頁面裏，點擊TouchID和密碼，進入到這個選項的設置界面。
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4、進入之後，在裏面輸入四個數字密碼。
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5、這樣就可以給手機設置鎖屏了，後期打開手機，進入到手機桌面之前都需要輸入密碼才能進入。
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