Playerprefs wipe

Hello everybody! Faced the problem of saving the game result.

Make a build on the microsoft lumia 550 windows 10.

I keep the game progress: example: Playerprefs.setint (“gg”, 1); Playerprefs.Save ();

Until I quit the applications, everything works, but as soon as I restarted the application, the entire saved result disappears.

Why is this happening?

How are you running the application? Does it happen if you run it through the phone start menu, rather than VS?