The defenition of macro in photography read: 1:1 reproduction ratio. Often close-up photography is falsely labeled as "macro" but most of the time a closeup isn't a true macro. True macro means that an our subject appears in real life size in the photo. That means if you would print it then 1cm in the picture should be still 1cm in the print.
With the tiny sensors we have in our phones means we have a lot of enlarging to do to meet this criteria of "true" macro.