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My brand new Lenovo Tab3 doesn't respond to screen brightness slider at all. Nor does the automatic adjustment work when ambient light changes. Any similar experiences or maybe solutions?

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Solved.
Turns out you have to accept the Lenovo customer-whatever and register when first installing the tab to get full functionality. The device is usable without registration, but there seem to be a few functions missing.

  • Mine did not work as well. Do I need to reset it to make it work? – Fillipe Germano Oct 19 '17 at 13:30
  • Factory reset, then start from beginning. Register to the customer program. And post this sort of follow-up questions as a comment, not an answer. – Sami Oct 19 '17 at 13:41

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