I just waft them away. I find you have to be pretty aggressive with a wasp in order for them to sting you.
I've heard (so take it with a pinch of salt) that in autumn they all get kicked out of their hive and their lives are a big food orgy and they are more likely to be aggressive.
The curved edge is a gimmick and a route to breaking your screen easier.
I always use a case so it doesn't bother me much.