This. I always bang my head against a wall after getting new mockups from our design team. what happens for small screens ? what happens in landscape ? what

This. I always bang my head against a wall after getting new mockups from our design team. what happens for small screens ? what happens in landscape ? what happens for tablets ? are questions they entirely ignore. They just conceive one screen size (large smartphone) in sketch and can't be bothered to consider any edge case.