Trying to use Notability in split-screen mode on iPad So for 8 years I have been using my 1st-generation iPad Mini, which cannot be upgraded past iOS 9, and therefore I have never had the chance to practice using split-screen or slideover mode (or any of the other multitasking innovations that came with iOS 12).  But I've just bought a brand-new iPad and am trying to figure out how to make the most of what ought to be a huge productivity boost.


What I am doing:  with one app open, I swipe up from the bottom of
the screen, press &amp; hold Notability in my dock, and drag it to the
right half of my screen.
What I expect to happen:  Notability should
fill half of the screen, and there should be a movable divider
between the two open apps.
What actually happens:  Notability opens
in "slide over" mode, filling only about 1/3 to 1/4 of the screen;
while it can be moved, it can't be resized.


What am I doing wrong?  If an app is in slide over mode, how do I get it into split-screen mode?
drag it to the right half of my screen


It could be that you’re not letting go of the app far enough to the right — try dragging it to the right edge of your screen.


  with one app open


It could also be that this app you have open doesn’t support being in split screen. Try with Safari as the first app.


  If an app is in slide over mode, how do I get it into split-screen mode?


Drag the small pill-shaped handle at the top of the slide over app slightly towards the left/right edge of the screen. The app behind will move out the way for you to let go in the space.