This might come in handy especially if you have a cracked screen. If you are able to draw the unlock pattern. You can then attach either or wired or wireless mouse to you phone. This was you can continue to use it and also have access to all you data. You can also use a wired xbox 360 controller or PS3 controller. There are many Apps that will help you do it, like this one. This App will help you play games on your phone via an external media controller. [Image Source]