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If you open up Settings > Display > Brightness you should have the setting to 'Adapt to light conditions'.
i too have a German unbranded z1compact with the latest version of kitkat and I'm missing the features "tap to wake up", "smart backlight control".
Both are shown in the picture, but I can't find them in my phone.
Seems the image in the link is model D6503 which I think is Z2... I guess Z1C does not get the goodies. Mine is Hong Kong version and neither it has the above mentioned. Would be cool though