There is more to it than this, like everything else there is a history of pockets. This article makes a good case for why the "history of pockets isn’t just sexist, it’s political": https://www.vox.com/2016/9/19/12865560/politics-of-pockets-s...

Please show me where to shop then. I've looked everywhere. I can't find pockets big enough to hold my normal sized iPhone. I have a weird body shape, normal pants literally DO NOT FIT.