You can use cloud services to store your files in a location that is accessible to all your devices or you can pull your data off your old phone and manually transfer it to your new one. There are two basic ways to transfer your data from one device to another. Read on as we walk you through the steps to get that data off your Windows Phone device and transfer it safely to your brand new iPhone. It’s not that difficult to transfer, you just have to know what to back up and where to find it. If you are a Windows Phone owner and just switched to the iPhone 5s or the 5c, you likely have a bunch of data on your old handset that you need to transfer to your new phone.