A friend of mine had some Bitcoin on his phone a couple of years ago and he's lost that phone which stored the private keys on without any other backup. We can see his balance on the blockchain and he knows his password for the private keys. Is there a way of creating the private key from the bitcoin address and the known password?
It's the keys duty to open up your treasure chest (wallet). And if you lost the keys there's no way to open it for you mate. The only possible way to recover those bitcoins is when you had recovered the phone and check the private keys and restore your wallet.