I think I just found the most amazing smartphone accessory to use in an humanitarian situation. Its waterproof and can be charged by winding the handle on the back.What the?....Job done! I'm glad I moved onto apps! The Crank Case ad below is quite cheesy so prepare yourself! You can contribute to the production of the product via crowdfunding, what an amazing idea: https://www.indiegogo.com/projects/ampware-keep-your-iphone-charged-forever.