When Mr. Harrigan dies, Craig, the teen who befriended and did odd jobs for him, puts his smart phone in his pocket before burial. When the lonely youth sends his dead friend a message, he is shocked to get a return text.
Craig, a young boy living in a small town, befriends older, reclusive billionaire, Mr. Harrigan. The two form a bond over books and an iPhone, but when the man passes away, the boy discovers that not everything dead is gone, and finds himself able to communicate with his friend from the grave through the iPhone that was buried with him.
In 2003, young Craig becomes acquainted with retired businessman John Harrigan following the death of his mother, with instructions to simply read to him three times a week. Five years later, a teenage Craig and elderly Harrigan have become friends.
During this time, Craig starts high school and becomes close to Ms. Hart, a teacher who comes to his aid when Kenny Yankovich, a school bully, attempts to intimidate him. After winning $3,000 from a lottery ticket that Harrigan gave him and receiving his first iPhone for Christmas, Craig buys Harrigan one too. Despite initial resistance to new technology, he greatly enjoys the phone.
The elderly Harrigan dies, leaving Craig heartbroken at the loss of his friend. At the funeral, Craig sneaks Harrigan's phone into the coffin. He is then informed by Harrigan's associate that he was left a bequest in Harrigan's will. Craig will receive $800,000 in a trust fund, to support his future studies and pursuit of a writing career, which he had told Harrigan about.
Craig calls Harrigan's phone as a gesture of thanks. The next morning, he discovers that Harrigan sent him an odd text message, though his father chalks it up to being a bug within the iPhone itself.
Life goes on for Craig, who goes to a dance with his crush, only to be attacked by Kenny, who accuses him of ratting out his drug-dealing activities on school grounds, getting him expelled. Later that night, Craig calls Harrigan's phone in a fit of frustration and sadness; he tells him what Kenny did and he is "afraid that this won't end, and I wish that you were here just to give me some advice."
Kenny is found dead the next day, having apparently fallen from his bedroom window while attempting to sneak out. Scared by what happened, Craig goes to an Apple store, upgrades his phone to a newer model, and puts away his old one.
Craig eventually graduates from high school and departs for college in Boston, to study journalism. While there, his father calls to tell him Ms. Hart was killed in a car accident involving a drunk driver, leaving her fiancé hospitalized. The driver, Dean Whitmore, is sent to rehab instead of prison for the accident although he'd been caught for drunk driving on other occasions, his license was suspended and he had an open container.
Infuriated by the verdict, Craig returns to his room and uses his old phone to call Harrigan, explicitly wishing death on Whitmore. Craig later learns Whitmore was found dead in his shower. He drives to the rehab center and bribes a worker there to give him details about the suicide. He is told that Whitmore swallowed shampoo and a piece of broken soap bar. Craig is disturbed to learn that the soap is the same brand used by Ms. Hart, and Whitmore's suicide note is actually a lyric from the song "Stand by Your Man" by Tammy Wynette; Harrigan's ringtone.
Craig breaks down and returns to his hometown. While there, he remembers opening Harrigan's "secret closet" (which he had refused to let Craig enter) after he passed, that it was actually a shrine to his deceased mother, so visits his gravestone, apologizing for his messages. He theorizes that Harrigan's odd text messages to him are his way of begging Craig to let his spirit rest in peace and for him to move forward in the here and now.
As he leaves Harrigan's grave, Craig visits his own mother's and collapses in tears, begging for forgiveness. He then rushes to the town quarry, contemplating the water while standing very near the edge before throwing his phone into the water. As Craig walks away, he quietly narrates that when he himself passes on and is buried, he wants his pockets to be empty. (thanks to Wikipedia)
