AreaSeries not displaying as expected on Windows Phone

Dec 5, 2013 at 1:58 PM

I got my AreaSeries working but it is not displaying properly.
Here is what I see :

It seems the line goes back to 0 between two positions ... How can I fix it ?

As an exemple, here is the same graph with SplineSeries used :

Besides, I'd like the DateTime axis to display a full day, even if there's no data to cover the full day. Can I force it ?