Can Spirits Use Phones to Send Messages?

Recently on Snopes.com, a website dedicated to debunking false claims about anything, there was a story about a man's cell phone placing calls to his loved ones after he died in a train accident. The story was proven to be true. So, I've shared it below, but HOW CAN SPIRITS USE PHONES?
   Spirits and ghosts are all energy. Because they're energy they ca

n manipulate anything that runs on energy, including a cell phone. In a number of events I've attended there have been several people that told me of their late loved ones calling them. 
  When I was at the Hope and Healing Conference this past springtime, several parents who lost children told me that their cell phones have rung and the number that shows is that of their deceased adult child. What's even more eerie to them is that the number was disconnected and was a non-working number.  
   The same goes for landline phones. They can also be manipulated to ring and no one may be on the other side (just static) - and its likely a relative or friend trying to let you know they're okay. 
   So how do you know? If the call comes around a birthday, anniversary of some sort (not necessarily a wedding anniversary, but maybe the date something significant happened) or a holiday, it is likely from someone on the other side.  - - Rob 
   NOW for the amazing story: 

Claim:   A man's cell phone placed calls to his loved ones after his demise. 
SNOPES: http://www.snopes.com/horrors/ghosts/deadcall.asp 

TRUE

Origins:   On 12 September 2008 at 4:22 p.m. in California's San Fernando Valley, a commuter train carrying 225 riders collided at a combined speed of 83 mph with a freight train run by a crew of three. In what came to be known as the Chatsworth crash, 135 people were injured (of which 87 were taken to hospitals, 46 in critical condition), and 25 died. 

One of the deceased was 49-year-old Charles E. Peck, a customer service agent for Delta Air Lines at Salt Lake City International Airport. He had come to Los Angeles for a job interview at Van Nuys Airport because gaining work in the Golden State would have allowed him to wed his fianceé, Andrea Katz of Westlake Village. (The pair had put off getting hitched until they were living in the same state.) This would have been his second marriage; Peck had three grown children from a previous 
union. 

His fianceé heard about the crash from a news report on the radio as she was driving to the train station to pick up her intended. Peck's parents and siblings (who live in the Los Angeles area) joined her. 

Peck's body was recovered from the wreckage 12 hours after the accident. Yet for the first eleven of those hours, his cell phone placed call after call to his loved ones, calling his son, his brother, his stepmother, his sister, and his fianceé. In all, his various family members received 35 calls from his cell phone through that long night. When they answered, all they heard was static; when they called back, their calls went straight to voice mail. But the calls gave them hope that the man they loved was still alive, just trapped somewhere in the wreckage. 

The barrage of calls prompted search crews to trace the whereabouts of the phone through its signal and to once again look through what was left of the first train, the location the calls were coming from. The calls searchers finally found Peck's body about an hour after the calls from his cell phone stopped. 

Charles Peck had died on impact. Yet long past his death, his cell phone had continued to reach out to many of those he cared most about, and ultimately led rescuers to his mortal remains. (As far as investigators revealed, they never found Peck's cell phone.) 

Read more at http://www.snopes.com/horrors/ghosts/deadcall.asp#x0bM3VUrh3kQFiQQ.99