Bitcoins stuck in phone based wallet
Actually, bitcoins are not IN a wallet. They are and will always be 'ON' the blockchain. The blockchain says how many bitcoins each address owns. Our devices merely save our private keys (you could say, our passwords) for us, since we can't really remember those very well.

If you can extract the private key from your wallet file, you can simply import the private key in pretty much every bitcoin wallet there is out there and claim the coins stored on the addresses.

(Keep your file(s) safe, because anyone with the private key can claim the coins and send them to another address you do not have the private key for!)