Awesome Bumper for Nexus 4 mobile phone. I hate to use a bumper to increase the size and thickness of a mobile phone while designers are trying to get their phone small and thin. However with glass on both sides Nexus 4 looks really fragile. So I designed this.Print on any machine you like.I Print it on Replicator2 with 0.15 mm layer height and 20% infill. Higher infill is recommended to avoid failure when you try to use it.when finished, you need to "slide" you nexus 4 in.You can even change the STEP and IGS file to modify the design and make it fit your own cellphone! The easiest one would be a Galaxy Nexus. :)BTW: I've marked this model with a Dorabot Logo, which is my open source robot project. If you don't like it, just download STEP or IGS file and change it for you own Logo.