If enabled, you can take screenshots of the app, but the system will display your chats in the task switcher even when the passcode is on.
You may need to restart the app for this to take effect.
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如果啟用它您便可以擷取螢幕截圖。但即使啟用了程式鎖，系統也會在程式切換器中顯示您的聊天。
您可能需要重新啟動程式才能使此設定生效。
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Tony Wong,
Dec 25, 2018 at 17:29