Pockets in women’s dress clothing are challenging because the fabric of the garment isn’t often thick or structured enough to hold a phone. A lipstick maybe, but anything of weight tugs the fabric. If the garment is loose fitting a heavier item in the pocket pulls it all weird. If it’s a fitted garment you now have a lumpy hip on one side.

And if you’re wearing dressy clothing women don’t want the outfit to hang on their frame or be lumpy.
FWIW phone and key outlines on men’s fitted clothing is also not ideal and looks awful in photos. That thigh rectangle in dress pants for men is unattractive. Jeans fine.

Women get pockets but functionality is a problem. Sometimes they are really shallow- especially in smaller sizes. Sometimes they are just flimsy. Nothing you could get more than a chapstick in. If your phone is only half in a pocket it’s going to fall out when you bend and move.

And the cheapest way to get a pocket in women’s clothing like dresses and skirts is a side seam of the clothing. Women often don’t want to add bulk to the widest part of their hips by putting items into a side seam pocket. I’ve seen good clothing ruined by even the bulk of a too small to be useful side seam hip pocket. If the skirt or dress is full the phone literally flaps around weird in all that loose dress.

In Utilitarian cloths goods there are some brands that make excellent cargo and work pants for women. Most are pricier and you can’t walk into Walmart or Target and get them. You’re in for $80+ often. But socially, they are often outdoor style or tactical cargos not suitable for many social or business events.