Windows Phone File.Exists always returns false.

I am using UnityEngine.Windows in order to read and write files to a windows mobile device, however i am struggling to make File.Exist() work. Here is what I am doing:
1. If the file exists - i use File.ReadAllBytes("Gamedata.dat") to read all bytes from it
2. If the file does not exist - i use File.WriteAllBytes("Gamedata.dat") to create a new file

However File.Exist("Gamedata.dat") always evaluates to false when i run it on a ARM device or emulator. What am I missing here?

 

Great, it works with Application.persistentDataPath on the actual mobile device (Windows Phone 8.1). But it does not work on a Mobile Emulator - Universal Windows 10. Can I assume it should work properly there? I don't have any physical device to test this unfortunately..

 

Yes just tried it and it works on desktop. I will assume that it works for each device that uses Windows 10 platform. Thank you for your time.