I am trying to back up a Samsung S5 mini (SM-G800F, running Android 5.1.1) using either Samsung Kies or SmartSwitch. With either program, the backup stalls for a very long time when it gets to backing up messages. When it finally recovers, it announces that backing up messages has failed (the rest of the items are fine).

The following categories have failed to back up due to an error.

Messages — Device not responding.

Has anyone else encountered this problem? What could be the root cause? Is there anything I can do on the phone itself to correct this, and allow messages to get backed up as well?

In the past backup has worked correctly with the same phone.

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    Have you tried omitting the messages in the main backup and using a different app like SMS backup and restore to backup your messages? – asloss Feb 21 '17 at 12:54
  • @asloss Thank, you, this is useful (if incomplete: it does not restore MMS). No, I was not aware that there are other ways to backup messages. If there is no other solution I can find, I will consider this one. I have not tried skipping message backup, but I always assumed it would avoid this error. My main question was how to fix message backups. – Szabolcs Feb 21 '17 at 13:03
  • It's worth giving a shot. You might have a weird message in there somewhere that is triggering a bug. Let me know. I personally don't like kies for backups. I do everything manually so that I can actually check to see if all the files are there. – asloss Feb 21 '17 at 13:13
  • @asloss Why? Did it ever silently fail on you (i.e. claim that everything is backed up, even though it wasn't)? If yes, that would be very disturbing. I have never had to try restoring backups ... – Szabolcs Feb 21 '17 at 13:26
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    Yah I've had it fail on me before lost a bunch of stuff. All it ended up backing up was settings :(. Not the first time I've had a mainstream backup service fail on me. So now I make sure I have everything manually. Could just be bad luck. I also think doing it manually is faster. Just copy internal and SD card onto computer and then use SMS backup and restore for messages and all done :) – asloss Feb 21 '17 at 13:29

I had the same problem for month, I updated to the last version of smart switch today and have reboot my s8 yesterday (I have almost 25% of free space on the phone) I gave a new chance to the backup with smart switch today and, after being stucked for almost 2 hours on "backing up message" at 18%, it finally went to the next step of the backup! So my advice is : patience (and use an usb 3 port!)

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