Congratulations on your new phone! The Samsung Messaging is the messaging app that comes as a "stock" application on the phone that enables you to send/receive messages.
With Verizon Messages, it is a service that we offer. Take a look here http://vz.to/1lE6tgE.
It is a an easy-to-use, free, downloadable app available on our Android smartphones and tablets and Apple iPhone models. It provides an enhanced text messaging and Multimedia Messaging Service (MMS) experience for our customers. Verizon Messages allows our customers to send and receive text and multimedia messages for their primary VZW phone using multiple devices including Android smartphones and tablets, Apple iPhone models, and any web browser when logged into My Verizon. Up to 90 days of messages are synchronized across all devices on the account, including message status and deleted messages providing customers with a seamless messaging experience. I hope that information helps. -Tamara
