
Italy's Carabinieri patrol near St Peter's square in The Vatican on May 1, 2025. (Getty Images)
The Vatican is shutting down all mobile phone signals this Wednesday. This move comes ahead of the secretive papal conclave, where cardinals will choose the next pope. Italian media confirmed the decision, highlighting strict measures to maintain secrecy.
Signal Blackout to Begin Before Voting Starts
At exactly 3 p.m. local time on Wednesday, all mobile signals within the Vatican will go dark. This blackout begins just 90 minutes before 133 cardinals are due to enter the Sistine Chapel. There, they will begin the sacred process of electing the successor to Pope Francis.
High-Tech Security Ensures No Leaks
To prevent any digital intrusion, the Vatican will use signal jammers around the Sistine Chapel. These devices will block any mobile, internet, or wireless communication during the conclave. The goal: to protect the confidentiality of the proceedings from external surveillance or internal leaks.
Centuries-Old Tradition Meets Modern Safeguards
The term “conclave” comes from the Latin cum clave, meaning “with a key.” Historically, cardinals were physically locked in until a new pope was chosen.
Today, while the locks are symbolic, the security remains just as tight. Cardinals must surrender all phones and electronic devices before the conclave begins.
Cardinals Sworn to Silence and Isolation
From Tuesday onwards, all voting cardinals will be under strict isolation. They will stay inside Vatican grounds and pledge an oath of “absolute and perpetual secrecy.” Their devices will be returned only after the new pope is elected.
Public Square Open, But Under Watch
St. Peter’s Square will not be affected by the signal blackout. However, security there has been significantly increased. Metal detectors, anti-drone systems, and multiple checkpoints have been set up to control the area during the conclave.
Complete Lockdown of the Sistine Chapel
Once the conclave begins, the Sistine Chapel goes into total lockdown. This isn’t the first time signal blockers have been used. A similar setup was implemented during the 2013 conclave that resulted in Pope Francis’s election.

Even Support Staff Must Stay Silent
Those working behind the scenes—electricians, plumbers, and elevator operators—are also bound by secrecy. According to the Vatican City State Governorate, they’ve taken oaths and will stay on-site 24/7 during the conclave. These workers will have no contact with their families or the outside world until the process concludes.
A Sacred Silence for a Historic Decision
The conclave is one of the world’s most closely guarded spiritual events. This blackout isn't just a technical move—it’s a deep-rooted tradition designed to protect the integrity of the vote. As the world watches and waits, the Vatican ensures that the next leader of 1.4 billion Catholics will be chosen in complete secrecy.