AT&T Messages Backup & Sync allows you to store and access your text and picture messages, calls, and voicemail messages in a single inbox from the AT&T cloud and syncs them to your supported smartphone.
INSTRUCTIONS & INFO
TURN ON: Select the Messages app. Note: With AT&T Messages Backup & Sync you can download messages stored in the AT&T cloud to a smartphone that supports Messages Backup & Sync. You can also access your messages and send or receive messages using your mobile number from your tablet or computer at messages.att.net. To learn more, visit AT&T Messages Backup & Sync.
Select the Menu icon, then select Settings.
Select AT&T Messages Backup & Sync.
Select TURN IT ON, then select OK. Note: You will be notified by free text message from AT&T that your messages will now be backed up on AT&T cloud.
TURN OFF: From message settings, select AT&TMessages Backup & Sync.
Select the "Stop Backup" hyperlink>Stop Backup > OK.