Back up texts and photos in Windows 10 Mobile
Turn on these options and you’ll be able to get your texts and photos back on a Windows 10 Mobile phone if you reset, update or replace it.
Go to Settings > System > Messaging and turn on Text backup.
Go to OneDrive > the Menu icon (three horizontal lines in the top left corner) > Settings > Camera upload, then turn it on.
Pictures that you take or save on your phone will now be automatically uploaded to OneDrive.
Same solution already provided from Microsoft
This setting is on but still does not update automatically, why
Re: Message backup. I went to settings-system-messaging and there was no text backup setting to turn on
How could i get my back up sms??????