a memex cell phone case for providing a combination of accessory functions in conjunction with a protective mobile device case , including a storable touchscreen stylus , a foldable , magnetically retained kickstand , an external memory expansion adapter , and openings for charging ports . the memory adapter permits consumers to increase the memory of their smart phone or other device which may be otherwise incapable or receiving a memory upgrade . the adapter includes a receptacle for commercially available memory storage devices such as a micro - sd card , and features a dust cover . the entire assembly is secured by a detachable phone retainer to ensure a positive connection between the phone and case functions . the memex case is designed to accommodate all the controls and functions of various mobile devices in a durable , utilitarian case while providing these additional accessories .