Android Question Help in Scaling with diff screen size

Hi guys,

I am testing Action bar Tutorial on Nexus 7 Tablet, using layout variant 600 x 900, scale 1 (160dpi), the display is ok.

But when testing on 5.2 inch, 1080 x1920 (WxH) phone, display is not ok.

Look at the attachment file, on the bottom, there is gap with Connected Label, although I set Vertical Anchor for that label to 0.

Any hints, how to fix that?

Thanks in advance.