When you delete a conversation, it does not disappear from the screen until you close the app and reopen it. Messages regularly fail to send. Janky communication with PC version, doesn't always sync up or send messages. Sometimes when typing a message on the phone, it will disappear half way through and you have to start over. Overall terrible app. Update: app will not send or receive pictures while on a phone call. Also, it says "tap to download" a photo, but when I tap it, nothing happens.