Why keep a phone which is not used? Sell your mobile at the Biggest Mobile Market.
Slideshows ›› Top 50 Apps for Your Windows Phone
16) Flashlight X:
Afraid of darkness? Forgot to take flash light on a camping? Here is the easiest solution. Download Flashlight X from the App store for free. It not only gives you light, but directions too. In an emergency situation, it can send out SOS signals too. Do not forget to download this. This will be useful at some point. I can assure you that.