Telegram Messenger Beta recently got updated to version 18.104.22.168 in Windows Phone Store. You can now lock your app with an additional pass code. Also, you can now go to the first unread message when opening a chat with new messages. Find the full change log below.
New in version 22.214.171.124:
– Lock your app with an additional passcode
– Go to the first unread message when opening a chat with new messages (wp8, wp8.1)
– Unread counters for chats in the list (wp8, wp8.1)
– Bug fixes
Download it here from Windows Phone Store for free.