I owned several early Nokia phones so I understand your point. Trouble is I've various brands of work pants whose pockets wouldn't even safely hold those Nokias. You'd think more attention would be paid to the depth of pockets in work pants but not so. Thus it's not one wayward manufacturer who is to blame, they're all at it.

My solution is to have my local drycleaning shop that offers an alteration service to deepen the pockets. I shouldn't have to pay extra to get right-sized pockets manufacturers should have provided.