DIS News reports that the four DCL ships have added messaging to the smartphone Navigator app. This will allow guests to send text messages to stay in contact with each other. Being able to send messages via the app is a big improvement. The Wave phone system was sometimes difficult to use. If you are in a noisy location it is easy to not hear the phone ringing. Also, since there are two phones per cabin, you don't know which phone your friend might be carrying around the ship. The downside of the app of course is that you need a smartphone, so the new messaging feature will not apply to some people.