My mom called my cell phone and it would fade out and I wouldnt hear her but I'd hear a ghostly whisper going "hello, hello". So i'd be saying, "mom what r u doing" and then i'd hear her mid sentance saying "What r u doing on the phone".
It happened like 3 times, till I yelled at her' Cut it out, I can't hear you". She's like "why r u yelling at me? Your the one whispering"?
Without blinking she said it is probably an EVP (Electronic voice phenomonon)
Then i said if the ghosts are using the phone, they can pay for it too.
