Just Mobile has updated its Tenc Air ($25/$30) clear slim bumper case and [Xkin] ($20–$30) glass screen protectors for the new 2018 iPhone models. In addition, Tenc Air is now slimmer and tougher, with air cushions on all corner and bumper frames, and Xkin Glass has been re-engineered to be more scratch-resistant and capable of wrapping the full curved screen. Both the case and screen protector are designed with minimalism in mind, allows users…