How to delete private chat history
1. To delete one message/photo/video/file, press and hold the unwanted content for more than 1 second - Delete.
2. To delete a chat history with someone, click on their profile picture - [ ... ] button in the top corner - [Delete chat history].
3. To delete chat history with all contacts, go to your profile page - [Settings] - [Chats] - [Clear chat history].
Note:
1. Deleted chats cannot be restored, so before deleting, think about or make a backup of your chats.
2. When deleted, the photo/video/voice message of the chat on both sides will be deleted.
3. The history of missed calls cannot be deleted.