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Original topic:

Brand new s21 ultra was hacked

(Topic created on: 16-03-2021 12:03 PM)
riow
Apprentice
Options
Galaxy S21 Series

My brand new s21 ultra was remotely controlled to restart it, shut it down, enable both WiFi and Bluetooth, and generate weird sounds all automatically. I neither insert any SIM card nor install/ configure anything. It told me that this device is so unsecured! I don't know how should I do with this outstanding device!

 

Is it because of UWB? How can I disable it?

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35 REPLIES 35
BandOfBrothers
Superuser II
Superuser II
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Galaxy S21 Series

If you 100% believe the phone has been compromised then send it back @riow 


Current Phone >Samsung Z Fold³ 5G.

Previous Phone > Note 20 Ultra 5G SM-N9860.

pete007
Helping Hand
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Galaxy S21 Series
can you do a hard reset..
riow
Apprentice
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Galaxy S21 Series

Yes, thanks for the hard factory reset reminder. 

 

I'd thought about returning it, but there's just a problem to me to do so...

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riow
Apprentice
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Galaxy S21 Series

But, how can I disable UWB which made me unconfidently keep using S21 ultra?

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tinglish
Helping Hand
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Galaxy S21 Series
unfortunately you can't disable uwb application.you can stop it running in the background,also turn off "continue apps on other devices" in advanced features.

Screenshot_20210316-120249_Settings_2214.jpg

Screenshot_20210316-120216_Settings_2212.jpg

Screenshot_20210316-120141_Settings_2209.jpg

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SmallFish
Voyager
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Galaxy S21 Series
dunno if smart switch windows app still allows emergency firmware restore? if so, you might want to use it to overwrite everything.
Personally, I'd return the phone ASAP.
Change all passwords on another secured device.
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Archer_Legend
Voyager
Options
Galaxy S21 Series

Where did you get it from?

May you perform the following actions? Power off your device, then connect it to your charger and press volume down, while keeping it pressed press the power button. At that point you will boot into donwload mode if you have done everything correctly.

In donwload mode there is a parameter called knox warranty void, is it 0x0 or 0x1??

To exit donwnload mode keep the power button and volume down pressed, it will reboot the device.

Archer
WelshPaul
Helping Hand
Options
Galaxy S21 Series

I doubt it was hacked... It was probably a return resold as new that is still linked to the original buyers lost phone app and they are having some fun at your expense.


My advice comes from being a UK Samsung phone user.
Current Devices:

Samsung S21 Ultra 5G 256Gb > Model: SM-G998B/DS.
Samsung Galaxy Watch4 Classic > Model: SM-R890NZSAEUA.
Samsung Galaxy Buds2 > Model: SM-R177NZKAEUA.

Samsung One Ui 3.1 / Android 11.
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riow
Apprentice
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Galaxy S21 Series

I'll check what you talked about this. Thanks.

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