Google Nexus Pixel C Screen Protector, Vikoo 9H Hardness 2.5 D Ultra-thin Anti-Scratch HD Clear Ballistic Tempered Glass screen protector for Google Nexus Pixel C (amazon.co.uk)
Ultra-thin Hybrid 360 Degree Full Body Protective Case Cover with Tempered Glass Screen Protector for Apple iPhone 8 8plus 7 Plus iPhone X (dhgate.com)
Right now, since the OnePlus 5 is so new, there are only a handful of tempered glass screen protectors from reputable brands, so we'll be updating this list as we go. (androidcentral.com)