My Samsung Galaxy Tab A (model number SM-P550 if you want to know the specs, Android version 6.0.1) will not allow me to "unhide" or "unlock" my developer options no matter how many times i tap the build number. On another note i am unable to root my device and because i do not currently own a pc and i have tried every mobile rooting technique i could find, thank you for adressing this issue. Edit - so i finnally figured it out, this device has many "accounts" and you can only access thing like the dev options on the "owner" but i was using "guest" but i still cannot root but im sure i will figure it out eventually, thank all of you for your suggestions and help!

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    What does "will not allow me to access" mean? What did you try, and what happened?
    – Dan Hulme
    Nov 7, 2017 at 13:11
  • Did you try tapping on the build number 10 times in the "About Device" section? That enables the developer options. Nov 7, 2017 at 13:24
  • What i mean by access is no matter how many times i tap the build number and no matter what else i do i cannot "unlock" or "access" the developer options. Nov 7, 2017 at 17:30
  • Look like you're running a quite old AOS version (6.0.1) from early 2016, and unfortunately Samsung are notorious for buggy firmwares. I'd recommend you to look for a different updated firmware and try that. Or if recently bought, take it back to your shop. As WillW said, all shop bought Androids should have this possibility, unless you got a stolen device that have been blocked somehow.
    – not2qubit
    Nov 8, 2017 at 15:24
  • Could you edit your post to include all the relevant information? If people have to watch a video to understand what your problem is, they're much less likely to try to help. It also makes it less likely that your question will come up in search results.
    – Dan Hulme
    Nov 8, 2017 at 19:59

2 Answers 2


Every Android should be able to get developer options. Wrichik Basu's comment says how to show developer options. However OEM Unlocking (first step to root) is disabled on basically all Samsung phones.

  • Yes i know how to do it but it wont work, nothing i do works. Nov 8, 2017 at 14:12
  • hymm, interesting. Try deleting cache for settings as per the later portion of this video: youtube.com/watch?v=94qQbr_J9cw
    – WillW
    Nov 8, 2017 at 21:51
  • next resort is update to android nougat
    – WillW
    Nov 8, 2017 at 22:21
  • I tried clearing the data of the setting app as the video said but the developer options still will not "unlock" no matter how many times i tap the build number. Nov 8, 2017 at 22:53
  • -WillW- how do i do that? Nov 8, 2017 at 23:13

Can you access recovery if yes then click apply update via adb...then do a Fastboot into a custom adb enabled recovery like twrp or cwm

$ fastboot boot /tmp/cwm.zip


$fastboot flash recover twrp.img

After booting into recovery you can have your ADB enable also then you can root your device

  • But adb requires USB debugging mode enabled, which is in the dev options. Anyways he is at a dead end.
    – jyoti proy
    Nov 8, 2017 at 20:46
  • Sounds like a good plan but unfortunately i dont really understand what most of that means. Nov 8, 2017 at 22:48
  • Samsung devices have no fastboot.
    – Andy Yan
    Nov 8, 2017 at 23:58
  • I do not know how to access recovery mode, but im sure i can figure it out. Nov 9, 2017 at 0:32

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