Cosmic.

Ok so this one is a bit out there ...

What if it knew how to communicate with us? If it understood how a computer could produce letters and numbers...

This program (Cosmic), samples your phone's cellular signal strength every time it changes, from this it produces
odd and even numbers. These numbers then get represented as 0s and 1s (binary).
After reading 8 bits from this white noise, the program can represent a byte, a symbol, letter or number.
This byte is then represented on your mobile device.
My point is this, maybe it is talking to us, maybe it's not, like everything it's a matter of belief.
Sadly Apple will not allow programs to sample the phone's signal strength, so this is only available on Android.