The Vatican is the smallest state in the world — forty-four hectares inside Rome — and a visit to it runs on a phone: timed tickets for the Museums, the audience pass, the map back to the metro. It has no mobile network of its own; Italian operators cover it, and a travel eSIM puts you on them before you reach the colonnade.


You arrive on foot — from Ottaviano metro, down Via della Conciliazione from the river, or off a bus at the walls. There is no border, only a security line, and the first thing anyone asks for is the ticket on your phone.

In St Peter's Square, along the walls and in the streets of Borgo and Prati around them, coverage is as good as anywhere in central Rome, 5G included.
Inside, five centuries of masonry get in the way. In the Basilica the signal is weak under the dome and gone in the grottoes; in the Vatican Museums it fades through the long galleries and there is none worth the name in the Sistine Chapel — where phones are meant to stay in the pocket anyway. Load tickets and audio guides before you go in.

The Vatican issues its own stamps, coins and passports, but not mobile signal: the masts that serve it are Italian. For a visitor that is good news — there is no switch of network as you cross the white line into St Peter's Square, and the connection you had on the bridge is the one you have under the colonnade.
If Rome is the rest of your trip, an Italy plan covers the days outside the walls.
The Papal Audience on Wednesday morning and the Angelus at noon on Sunday fill the square, and a full square means a slow network. Send what needs sending before you take your place, and agree a meeting point with your group in advance — messages may take a while to arrive.
Add the Museums ticket to your phone's wallet or take a screenshot of the QR code while you still have a good signal. The entrance on Viale Vaticano is exactly where it starts to fade.
No. Vatican City is covered by Italian operators, whose masts stand around and above it. Your phone sees the same networks it saw in Rome.
Partly. The signal is weak inside the Basilica, fades through the Museums' galleries and is practically absent in the Sistine Chapel and the grottoes. Outside, it is excellent.
The networks are the same Italian ones on both sides of the wall. A Vatican plan is sold for the Vatican; for the rest of a stay in Rome, take an Italy plan.
It can be. With tens of thousands of people in the square, any network slows down. Wi-Fi is not a substitute there — plan around it.
Photography and calls are not allowed in the chapel, and there is almost no signal in any case. Audio guides downloaded in advance work fine.
Yes — the Vatican even mints its own euro coins. Cards and phone payments are accepted at the Museums, the post office and the shops.
One eSIM can cover Vatican City and the countries around it — no need to buy a plan at every border:
Plans for the countries next door:
Where the signal is, how roaming treats the place, and what to know before you land.