Mobile device cover for use with a host mobile device

Abstract

A mobile device cover for use with a host mobile device includes a front frame, a middle frame, and a back frame. The back frame includes a plate or portion that can be removed and interchanged with a second plate or portion. The second plate or portion can be designed to look different and to provide different functionality. For example, the plate or portion of the back frame can be replaced with the second interchangeable plate or portion to provide a screen that can be used by one or both of the mobile device cover and the host mobile device.

What is claimed is: 
     
         1 - 20 . (canceled) 
     
     
         21 . A mobile phone cover for use with a mobile phone, comprising:
 a housing configured to enclose the mobile phone, wherein a front side of the housing comprises an opening through which a screen of the mobile phone can be viewed; and   a removable portion operably coupled to a backside of the housing.   
     
     
         22 . The mobile phone cover according to  claim 21 , wherein the removable portion is interchangeable with a different removable portion. 
     
     
         23 . The mobile phone cover according to  claim 21 , wherein the removable portion is configured to house circuitry to support functionality. 
     
     
         24 . The mobile phone cover according to  claim 21 , wherein the mobile phone cover comprises circuitry, and wherein the removable portion comprises electrical contacts configured to electrically connect to the circuitry of the mobile phone cover. 
     
     
         25 . The mobile phone cover according to  claim 21 , wherein the mobile phone cover comprises wireless transceiver circuitry, and wherein the removable portion is configured to wirelessly connect to the mobile phone cover. 
     
     
         26 . The mobile phone cover according to  claim 21 , wherein the removable portion comprises a plate. 
     
     
         27 . The mobile phone cover according to  claim 26 , wherein the removable portion is interchangeable with a different removable portion comprising a different plate with a different appearance. 
     
     
         28 . The mobile phone cover according to  claim 21 , wherein the removable portion is interchangeable with a different removable portion with a different physical shape or size. 
     
     
         29 . The mobile phone cover according to  claim 21 , wherein the removable portion forms part of an external side of the housing. 
     
     
         30 . The mobile phone cover according to  claim 21 , wherein the removable portion is magnetically secured to the housing. 
     
     
         31 . The mobile phone cover according to  claim 21 , wherein the removable portion comprises an output device that can be used by one or both of the mobile phone cover and the mobile device. 
     
     
         32 . The mobile phone cover according to  claim 21 , wherein the removable portion comprises a screen. 
     
     
         33 . The mobile phone cover according to  claim 21 , wherein the removable portion comprises a projector. 
     
     
         34 . The mobile phone cover according to  claim 21 , wherein the housing comprises a plurality of connected frames. 
     
     
         35 . A mobile device comprising:
 a mobile phone;   a mobile phone cover configured to enclose the mobile phone, wherein a front side of the housing comprises an opening through which a screen of the mobile phone can be viewed; and   a removable portion operably coupled to a backside of the mobile phone cover, wherein the removable portion comprises circuitry operably coupled to the mobile phone.   
     
     
         36 . The mobile device according to  claim 35 , wherein the removable portion is wirelessly coupled to the mobile phone. 
     
     
         37 . The mobile device according to  claim 35 , wherein the removable portion comprises a display. 
     
     
         38 . The mobile device according to  claim 35 , wherein the removable portion comprises a projector. 
     
     
         39 . The mobile device according to  claim 35 , wherein the removable portion is configured to be magnetically coupled to the mobile phone cover. 
     
     
         40 . The mobile device according to  claim 35 , wherein the mobile phone cover comprises a plurality of connected frames.