When a local passcode is set, a lock icon appears at the top of your chats list. Click it to lock Telegram Desktop.
Note: if you forget your local passcode, you'll need to log out of Telegram Desktop and log in again.
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開咗程式鎖後，傾偈頁面會見到一個鎖，撳佢一下就可以鎖住程式。
留意返︰如果你唔記得咗密碼，你就要將 Telegram 洗咗之後再入過。
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Tony Wong,
Feb 10, 2019 at 19:45