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Mysterious photo transfer from one phone to another

peterh337

Android Enthusiast
Mar 24, 2015
311
24
I have an S7 (v6) and S6 (v5). The S6 is a backup, with a PAYG SIM card which incidentally has no data support. Both have wifi enabled.

The S6 is turned off most of the time.

Both are configured as identically as I can achieve.

I have just turned on the S6 and astonishingly found photos (under DCIM/Camera) which were taken on the S7 a few days ago!

So some kind of sync took place. But only in one direction, and it was not total at all; only a few stills and a few movies (say 300GB total) got copied over. Today's S7 pics were not copied over.

Where would the config be for such a feature?
 
Sync in settings where? I can't see anything thus titled.

The photo viewer app I use is Quickpic, only. That has no sync option AFAICS.

I know there is a phonebook sync function via google, which sometimes works, sometimes, not, sometimes creates multiple entries under the same name, but I have never seen a picture sync feature.
 
Upvote 0
I may have found one candidate. in Settings there is a thing called Backup and Reset. Under Backup there is an on/off switch for backing up application data, and I guess "data" might be referring to camera pics and movies also. One can make it "only when on wifi".

The obvious problem is that if you make a 1GB movie, what happens? It will try to upload it to google over your home ADSL.

How can one find out what stuff has been uploaded to google in this way?
 
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