I have two wallets like that, neither is a fortune but still bit of a waste. One is a bad drive that goes click alot now and the other is a bad phone with a battery now shaped like a tennis ball almost. I think one is bitcoin core and the other is eth within a very old version of imtoken and the OS was android 4 I think which apparently helps. Any of that sound viable possibly, I was just trying to backup the file mostly to stabilize the situation.