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    1. Home
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    3. >Cardinal found with phone during secret conclave to elect Pope Leo, book says
    Finance

    Cardinal found with phone during secret conclave to elect Pope Leo, book says

    Published by Global Banking & Finance Review®

    Posted on March 1, 2026

    4 min read

    Last updated: March 1, 2026

    Cardinal found with phone during secret conclave to elect Pope Leo, book says - Finance news and analysis from Global Banking & Finance Review
    Tags:FinanceBankingMarketsVaticanCatholic Church

    Quick Summary

    A new book reveals that during the secret papal conclave last May, one cardinal accidentally brought a live cellphone into the Sistine Chapel despite signal jamming. The incident, described as unprecedented and disruptive, underscored both human fallibility and high security measures.

    Table of Contents

    • Inside the 2023 Vatican Conclave: Security Breach and Election Details
    • Security Breach Shocks the Conclave
    • SECURITY BREACH WAS 'BETTER THAN FICTION'
    • Conclave Protocols and Secrecy
    • How Pope Leo Was Elected
    • ONLY TWO LEADING CANDIDATES FOR POPE
    • Secrecy of the Balloting Process
    • The Frontrunners and Final Vote

    Vatican Conclave Disrupted by Cardinal’s Phone During Pope Leo Election

    Inside the 2023 Vatican Conclave: Security Breach and Election Details

    By Joshua McElwee

    Security Breach Shocks the Conclave

    VATICAN CITY, March 1 (Reuters) - The secret conclave that elected Pope Leo head of the Catholic Church last May was interrupted when one of the 133 cardinals involved was found carrying a cellphone, a massive security breach, a book released on Sunday revealed.

    As the clerics were preparing to take their first vote inside the Vatican's Sistine Chapel, which was fitted with jamming equipment to prevent outside communications, security officials picked up the signal of an active mobile connection.

    The cardinals stared at each other incredulously, then one of the older clerics discovered he had a phone in his pocket and handed it over, according to "The Election of Pope Leo XIV", a new book by two long-time Vatican correspondents.

    The book does not name the cardinal or suggest he had any motive for keeping his phone, saying the moment left him "disoriented and distressed".

    SECURITY BREACH WAS 'BETTER THAN FICTION'

    The scene was "unimaginable even for a film and never before seen in the history of modern conclaves," wrote the authors, Gerard O'Connell and Elisabetta Pique.

    One such film, the 2024 hit "Conclave", imagined a tangled web of intrigues during the fictional selection of a pontiff. Last year's unprecedented discovery of a phone was in its own way more startling than anything portrayed in that movie, O'Connell told Reuters.

    "Reality (was) better than fiction," he said.

    Conclave Protocols and Secrecy

    Clerics taking part in a conclave take a vow not to communicate with the outside world and surrender their phones and all other communication devices for the duration of the proceedings, which can last for days.

    The Vatican press office did not respond to a request for comment about the new book, which offers behind-the-scenes details of one of the world's most secretive elections.

    How Pope Leo Was Elected

    ONLY TWO LEADING CANDIDATES FOR POPE

    The cardinals met in a two-day conclave from May 7-8 under an intense global spotlight to elect a successor to Pope Francis, who died in April after 12 years leading the 1.4-billion-member Church.

    Much of the speculation at the time focused on the possibility that the cardinals would elect a new pontiff from Asia or Africa, given that the conclave was the most geographically diverse in history, with clerics from 70 countries taking part.

    But no candidate from those regions garnered much support, according to the book, which discloses details of the cardinals' votes for the first time based on information from interviews with participating clerics.

    Secrecy of the Balloting Process

    While it is strictly forbidden for cardinals to reveal details of the secret balloting at a conclave without permission from the future pope, it is common for journalists to slowly tease out information from clerics in the years afterward.

    The Frontrunners and Final Vote

    Two candidates immediately emerged as frontrunners inside the conclave, the book said.

    One was Italian Cardinal Pietro Parolin, a long-time Vatican official identified by many outlets as a leading favourite. The other was U.S. Cardinal Robert Prevost, a figure who was mostly unknown outside Church circles but would emerge as Pope Leo, the first pontiff from the U.S.

    On the first vote in the conclave, held in the evening of May 7, Prevost already received between 20-30 votes, an unusually large number, according to the book.

    Philippine Cardinal Luis Antonio Tagle, who was also seen as a favourite going into the election, only ever received fewer than 10 votes in the conclave.

    On the fourth ballot in the afternoon of May 8, Prevost won with 108 votes. Tagle was sitting next to Prevost as the final vote was being tallied and offered the future pope a cough drop to soothe his throat, the book said.

    (Reporting by Joshua McElwee; Editing by Andrew Heavens)

    Key Takeaways

    • •During the May 7–8, 2025 conclave that elected Pope Leo XIV, a cardinal was found to have a functioning cellphone in the Sistine Chapel—despite pre-emptive signal jamming and confiscation protocols to ensure secrecy. (lemonde.fr)
    • •The unexpected discovery caused consternation among the 133 participating cardinals, as the book 'The Election of Pope Leo XIV' recounts the moment as film-worthy and 'reality better than fiction'. (lemonde.fr)
    • •Strict measures—like surrendering devices, disabling signals, and installing inhibitors—have been standard in modern conclaves to safeguard confidentiality, making the phone incident especially extraordinary. (mundoamerica.com)

    References

    • 'Conclave': Is the film faithful to reality?
    • The digital shielding of the Sistine Chapel for the conclave: 650 surveillance cameras, inhibitors, and armed agents | News

    Frequently Asked Questions about Cardinal found with phone during secret conclave to elect Pope Leo, book says

    1What happened during the conclave to elect Pope Leo?

    A cardinal was found with a cellphone during the secret votings, causing a major security breach, as revealed by a new book.

    2Why was a phone inside the Vatican conclave a problem?

    All cardinals are required to surrender communication devices for secrecy; a phone represents a significant breach of protocol and security.

    3Who were the leading candidates in the conclave?

    Italian Cardinal Pietro Parolin and U.S. Cardinal Robert Prevost were the main frontrunners, with Prevost eventually elected as Pope Leo.

    4When did the conclave to elect Pope Leo occur?

    The conclave took place over two days, from May 7-8, following the death of Pope Francis in April.

    5Has a phone ever been found during a conclave before?

    According to Vatican correspondents, this was an unprecedented event never before seen in modern conclave history.

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