No, Tablet Talk is actually using your phone to receive and send the messages, so you would back them up on the phone.
If you are looking for a stand alone Messaging app, you can use Hangouts from Google, or Chat On from Samsung.
The problem with Hangouts, Chat On, and all the other stand alone apps for the tablet, are that your friends need to have the same app on their phones/tablets
Decided to us AT&T.messaging as it is available on the Tab 3.0 as well as my S5. Does everything I need it to do. Does backup and can sync both the S5 and Tab 3.0
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