I ordered one. My phone sucks down the battery on 4G. Planning trip to Eastern Europe in a couple of months, and 4g is universally available where I'll be. I wanted a backup that used AA batteries (almost universally available.) Not one that I have to recharge to to charge the phone (seems slightly redundant to me). We shall see. Note---long delivery time, as it comes from China (bought via Amazon, no affiliation.) At less than 6 bucks including shipping, its worth a try.