17
Leveling tool / Bubble level for iPhone
1
Open the
Measure app
,
(mine is in my Utilities folder).
2
Tap on
Level
at the bottom of your display.
3
Now find the surface you'd like to check
for level and place your iPhone on it;
you can hold your phone in portrait or
landscape mode. When the surface
you're testing is level, you'll see 0° and
a green screen.
4
If the surface you're checking isn't level, the screen will
be black, and you'll see how many degrees plus or minus
it's off from level.