Mobile game is not launching after working properly for 2 - 3 days. Is that a Memory Leak?

Hi,

I have a single level mobile game. There is a single save game file and there are not more than 20 variables that are being saved.

The save function is called on every frame.

When I deploy the game to my phone it works fine for 2 - 3 days. Then all of a sudden it stops launching. It freezes on the splash screen. Wont crash, won’t open.

Do you guys might think of a possible reason for this?

Can it be a memory leak?

I would really appreciate any replies:)