Gameboy Color A.D. problem

Hi I'm Ana and I really love the gbc ad for android but today I've got a problem

I was playing pokemon silver and I was saved the game in the same game not in the emulator and I don't have problems with that, I turn off the phone many times and I still play the game because it says continue in the game's options.

so today my phone fell to the floor, I thought I had saved the game fortunately but when I opened the game it said new game and I can't play where I kept.
even though the .sav file exist in the same folder where I have the game but the emulator don't recognized

what can I do to recognize the .sav file ??