Refurbished Samsung Galaxy Watch – check for compromise

I recently purchased a refurbished Samsung Galaxy Watch off Amazon through a third-party seller. Now, a few hours later, it occurs to me that it is possible that the previous owner could have rooted the device and that the refurbishing process did not undo it. I can’t just do a factory reset from the watch itself, since the owner could have modified the bootloader to only go through the motions of resetting, while keeping the compromise intact.

So,

  1. Is this something that I actually need to worry about?
  2. If so, then how can I check my new Galaxy Watch for compromised firmware? Is there an official process I can run, perhaps a reference firmware that I can compare to?
  3. If I find such firmware, is there a way to remove it? Alternatively, is there an external reset process I can do on the watch to ensure that no malware is left on the device, whether or not it is there?

Some miscellaneous information:

  • Primarily, I am concerned about the watch being used by a remote attacker to collect login credentials, such as for Samsung and Google accounts and potentially payment information (such as through Samsung Pay).
  • I do not have any reason to believe I could be specifically targeted – I imagine the device would be compromised as part of a random sample to get credentials.
  • I cannot get around using my Samsung account, since I plan on using the watch to track sleep and physical activity.
  • If I end up finding compromised firmware, or have no method of ensuring that my device is not compromised, I plan on returning the watch and buying a factory new one.

samsung galaxy a3: block all notifications except email and sms

Device: Samsung Duos (SM_A300H) Android version 5.0.2 

I want something very basic: that my samsung galaxy a3 works like a phone and makes sound only for call, sms and alarm. No more FB nor email nor whatever notifications.

I googled and found some answers that doesn’t suit my device. They say: Go to Settings -> Device -> Sound -> Default Notification Sound -> Silent. Next, set your text message sound to whatever you want.

I have Settings -> Sounds and Notifications, and there I can silent notifications, but there is zero options for message.

Smartphones are so smart that they aren’t phone anymore ๐Ÿ™


This is what I see when I press sound button + options:

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Samsung A50 keeps disconnecting wifi (whatsapp loses connection) after 5 minutes

My Samsung A50 keeps dropping the wifi (I suspect, Whatsapp web declares that the phone is unreachable). How can I keep it on? I noticed it’s exactly five minutes after I press the button.

Please note that I already tried googling, as well as any proposed solution, and I disabled every possible thing that might put the application to sleep. I also noticed that every googling I did refers to options that are not present on the A50 (e.g. “Put wifi to sleep”).

At this point I am out of ideas. Help?

18.04 and Samsung: Scan to PC not available

I’m using Samsung XPress 2070FW over WiFi and I cannot get the printer to scan using the on-the-printer scan to pc function. The error message is “Scan to PC not available”. However, scanning using the PC (sane) works fine. The driver is the unified one for the model, but there’s no interface like the one of windows so I cannot tweak scanning on Ubuntu.

Anyone encountered a similar problem?

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