Support for in-app notifications is another latest extraordinary feature introduced in the new version of Telegram. You will find an in-app notification at the top when you get a new message as you are using the app. You can view the text of the message in its entirety, pull down on the notification to expand it, or even preview the attachment of the message.
The in-app notification of Telegram allows you to send a sticker or quick reply directly from where you are by the time you got notified, just like the Telegram’s iOS-wide notifications. This means that you can reply to the message you just got even when you are considering another conversation.