Today Twitter announced, mobile users will soon be able to
see their entire Direct Message history on phones. Curretly users can only view
some of their messages. This is one of the greatest draw back of twitter mobile
app. So the firm announced the change and mentioned that they are working on
the changes that will syncronise deleted messages across devices. Now users can
delete a conversation from phone, but it will be available on their tablet or in
the web browser. This will be change soon. So please wait for the change.