How to recover blockchain wallet on iPhone with address & PIN?
It is impossible to spend coins (aka recover them in your case) without having the private keys. You do not have enough information to have the private keys (address is not enough, 4 digit PIN is only for unlocking the wallet). Thus your coins may be lost.

However, blockchain.info is an online wallet. You should be able to go to their website and access your Bitcoin that way. You will need to have the account identifier (or wallet identfier, whatever it is called) and your password.