Instant interstellar communication

If you were out 12 billion light years away from the sun would you be able to call somebody on your cellphone. No of course not the message would arrive at earth 12 billion years later and the message back to you would take another 12 billion years thats still not taking into account that the message would deteriorate before it even got to earth in the first place that is why the only way to communicate would be through photons. One high frequency photon can be split into to low frequency photons. These photons are now entangled which means no matter where you are in the universe whatever you do to one photon happens immediately to the other one. You could then devise a computer system to where the photons could carry messages in code from one place to another providing instant communication. you could send a probe into a black hole that would be able of sending messages back out*.

*of course you would need to design a probe that could withstand a black hole.