Some of the body skins like Invisible Shield and Wrapsol cover the sides of the phone. Would this also resolve the problem even though the skin does not cover the seam between antennae?
Some don't like the way it looks on the front or back, but on the sides it's possibly another option besides the bumper if you're only using the case for better signal.
Some don't like the way it looks on the front or back, but on the sides it's possibly another option besides the bumper if you're only using the case for better signal.