This tutorial will show you the location of that file and how to convert that backup file into a readable format like PDF, Word or Excel. It won't provide an easy way to transfer the SMS, but at least you will have your SMS archive available in the 635.
What's more, try FonePaw iOS Transfer tool to manage your iPhone contents.
For SMS:
You can read all your text messages by conversation mode. Copy whole messages or select the items to transfer them from iPhone to computer. And import the messages to other mobile with FonePaw 3rd party tools.