"Windows Phone allocate storage dynamically..." ......"As you add more to your device it will release some of the reserved space back to the phone."
i have 800MB reserved on my 8S and 710MB free if my phone need more memory gona free that reserved space.
Lumia 820, Other takes a lot of memory. - Microsoft Community
i have 800MB reserved on my 8S and 710MB free if my phone need more memory gona free that reserved space.
Lumia 820, Other takes a lot of memory. - Microsoft Community