To activate the self destruct messaging function:
*Start secret chat with your friend by swiping from left.
*Choose contact who you want to have a secret chat.
*In the chat select setting on top right corner
*Select Set self-destruct timer
By selecting the function it will automatically delete the message after you have read it.
You can do a group chat by adding your contacts.
You can send a broadcast message to all your contacts without worrying about having them all in 1 group.
ooggee messenger is using Telegram API to send and receive instant message where you don't have to worry about loosing your messages when you want to change your phone.
All the messages apart from self destruct messages are stored on to Telegram cloud service.