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General Knox?

Discussion in 'Android Devices' started by philayl, Jan 12, 2014.

  1. philayl

    philayl Android Expert
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    Hi, I am little confused as to what this "Knox" is all about, I have 4.3 on my phone but how can I tell if "Knox" is installed, does it list it in "About Device"? Phil
     

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  2. cmichael258

    cmichael258 Well-Known Member
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    If you took the OTA (over the air) update to 4.3 you have it. You can't determine via "About Device"; I believe you would have to go in to download mode to check it.
     
  3. Tokenpoke

    Tokenpoke Android Expert
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    Knox is essentially useless due to being limited to using only apps made specifically for it.

    You just need to look in your app drawer for the shortcut and follow instructions. Once downloaded its installed automatically. I removed it within an hour because its just plain crippled.
     
  4. svim

    svim Android Expert
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    Sadly I have to agree that it's pretty much floating aimlessly right now but in theory I think it's a great concept -- now that BYOD has become such a common occurrence in the workplace it's a growing need to have a distinct separation between personal and work profiles on people's personal phones and tablets.
    The problem I see with KNOX is it's a curated, proprietary Samsung project that may or may not gain any kind of business/corporate foothold as long as it's limited to Samsung products, and even then only to some models.
     
  5. Mikestony

    Mikestony ~30% Carbon Black ±
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  6. meyerweb

    meyerweb Android Enthusiast
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    If you took the OT, you didn't, and can't, totally remove Knox. You can remove the app apks, but Knox is still in the bootloader, and always will be.
     
  7. dynomot

    dynomot Android Expert
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    Knox is more than in the bootloader, it is built into the phone. It needed the bootloader from 4.3 onwards to work, but it had been there since the phone left the Samsung factory.

    Knox is Samsung's secure device within a device for BYOD (Bring Your Own Device) use in the work world. The New bootloader checks whether the device has been "Knox tripped", by installation of a rooted kernel or custom recovery. Doing this trips one bit on a chip from permanently off (0) to permanently on (1) the bootloader reads the bit (in essence it is blown like a fuse - it us what is known as an eFuse) and reports back 0x0 (un tripped device secure) or 0x1 (flag tripped device cannot be guaranteed secure).

    Tripping the Knox flag renders Knox (the application useless for ever), but more than that it can be used by Samsung to let them know you have tampered with the software, gained root access and possibly invalidated the device warranty (This is a grey area, you may still get a warranty repair on a Knox tripped device). The "warranty void" next to a 0x1 flag refers to the security warranty Samsung give with Knox.

    For ordinary users who have no interest in using a secure device within a device it makes absolutely no difference to how the phone works.

    To see your Knox status (0x0 or 0x1) turn off your phone completely and go into download ( sometimes called 'Odin mode') by holding volume down, the home key and lastly the power key down all at the same time. You will get a warning about installing a custom ROM. Ignore it and press volume up. Your Knox flag status is in the small text top left of screen. To go back to a normal. Press and hold the power key until the phone reboots.
     
  8. philayl

    philayl Android Expert
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    HI, thanks for the info people, it seems to me that although you have bought a sim free phone, Samsung are trying to tell you what you can or can't do with it, or am I missing something? Phil
     
  9. dynomot

    dynomot Android Expert
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    Yes and no ! If that makes any sense. They haven't stopped you doing anything you could do on, say a 2011 Samsung Galaxy SII running 2.3.6 (Gingerbread). They have however made it slightly more difficult, introduced a method where they know for sure that the device software had been alerted and perhaps the show stopper, physically alter the hardware of a phone by tripping the Knox flag and blowing an eFuse.

    It is, for an ordinary private individual who has purchased their own device and will never want to use it for work in a BYOD scenario, the same as it ever was : you pays your money you takes your choice. That choice now has an extra rather tangy layer on top, so to speak.
     
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  10. funkylogik

    funkylogik share the love peeps ;)
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    I just read this quote by Chainfire View attachment 66559
    So samsung service centers are claiming that a tripped efuse is hardware damage caused by the user. Now thats low!
     
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  11. funkylogik

    funkylogik share the love peeps ;)
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  12. dynomot

    dynomot Android Expert
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    For Samsung now read Scumbags! I hope I never need my warranty, fortunately it's insured as well.
     

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