I tried to root my phone and it worked only with Kingo Root and after I reboot my phone, I do not have root-access. I have tried several times, please answer me. I really need to root my phone. It's Vonino Jax QS.

  • You don't have root access how? You no longer have the GUI app? Binary errors? Root can't be undone with factory reset. – SarpSTA Apr 8 '16 at 10:16

If Kingo root can't help you root successfully. You can try another tool like iRoot.I once used and found it do no harm to my device.Try as this guide: one click root to root Android phones and tablets

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