No. It never will and never has. So send all those messages
No. It is just like in texting. If you delete all your messages, you cannot access them from your phone. But your friend can still access them from their phone. You must be sure that they delete their chat history too. (Note: Your parents or other people can still see your messages and texts if they contact Facebook or your cellphone provider with username and password or phone number and get every, single message you've ever typed or texted.
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when they chat to you it will go to messages
Facebook messenger is a program which makes a sidebar appear for chat even when on the desktop. The mobile version lets you chat or make groups through your mobile phone contacts.
iPhone
You are free to chat to other users on Twitter by sending them tweets or direct messages.
Click inbox.click compose a new message.
You Can't.it's so sad, isn't it?
If you access the facebook help center, you can find step by step instructions on how to delete chat messages. Rest assured, your messages are safe from your wife if you follow the directions given by the help center.
FaceBook mobile doesn't provide for chatting. You can send and receive messages the same way you do on a computer.
Just slide the unwanted message or chat to the left and press delete
You can only get if you own an Android, Blackberry or iPhone device. Facebook Messanger® this is the application available for Android, Blackberry and iPhone devices only till date by Facebook. Users with this application have phone icon next to their name in chat box, telling us that they are online through mobile (using Facebook Messanger)