I am using Swype in various chat programs (Threema, iMessage, WhatsUp) and I had to now several times that I left a chat program while typing a text, e.g. to look something up in Safari. And when I get back to the chat program, the keyboard hangs and shows the "123" keyboard rather than the "ABC" keyboard. Can't change anything. Switching back to "ABC" does not work. Switching to an alternate keyboard does not work either. Regardless to which other App I change the keyboard does not respond. Killing Apps and restarting them also does not work. Only rebooting the whole iPhone restores the functionality.