The Wiesn is sixteen days long, covers one field on the edge of Munich, and pulls in
roughly six million people. For two weeks that field carries more phones per square metre
than almost anywhere in Europe — and every one of them is trying to send the same photo of
the same tent at the same time.

Your phone will not stop working. It will do something more annoying: it will show full
bars and move nothing. This guide is about what actually happens on the Theresienwiese, and
what to set up before you fly so that losing your friends at 19:00 is a five-minute problem
rather than an evening.

Why the network gives up before your battery does

A mobile cell has a fixed amount of capacity and shares it between everyone standing in
it. Munich’s operators bring in temporary masts for the festival, but capacity is planned
for a crowd, not for a crowd where everybody uploads at once. The result on a Saturday
evening is predictable:

• Calls fail first. Voice needs a steady channel; when the cell is full
  you get “call failed” rather than a ring.
• Messages still get through. Text is tiny and retries quietly in the
  background. A WhatsApp message will land long after a call has given up.
• Uploads die before downloads. Your story will spin for a minute while
  a map still loads, because the uplink saturates first.
• Tent wifi is not a plan. Where it exists it is shared by a few thousand
  people in one hall.

What to agree before you walk in

Every group that has a good day at Oktoberfest has done the same three things without
thinking about it:

1. A physical meeting point and a time. Not “by the tent” — a specific
   statue, entrance or tower, and an hour. If data fails, this is the whole plan.
2. Offline maps downloaded. Google Maps lets you save the Munich area
   before you travel; it then works with no signal at all.
3. Message, do not call. Tell the group this out loud. It is the single
   change that keeps people findable.

Roaming, or a plan you buy before you fly

If you are coming from inside the EU your home tariff usually travels with you. From
anywhere else — the UK after Brexit, Turkey, the US, the Gulf — Germany is a roaming
destination, and a long weekend can quietly turn into a three-figure bill. We wrote a
longer piece on how those charges are built up in
eSIM vs roaming charges.

The alternative is to buy the data before you leave, as an eSIM: a profile you scan into
the phone at home, which switches itself on when you land in Germany. Your own number stays
active on the physical SIM, so the bank still texts you its codes. If the idea is new, start
with what an eSIM
actually is.

How much data a festival weekend really takes

Oktoberfest is a photo-and-video trip, so the usual estimates run low. A realistic three
day weekend:

• Maps and transport apps — about 60 MB an hour of active use
• Messaging with photos — 300 to 500 MB a day for a group that is chatting
• Stories and short video uploads — 250 MB for every ten posted
• One video call home — around 400 MB an hour

Three to five gigabytes covers most people for a long weekend. If you are posting
constantly, an unlimited plan for the exact number of days you are there is simpler than
counting. Our fuller breakdown is in
how much data you need
when you travel.

Germany eSIM plans

Set it up before you leave home

Install the eSIM on your own wifi, not at Munich airport with a bag on your shoulder.
The profile can sit dormant in the phone for weeks and only starts counting when it connects
in Germany. Step-by-step:
iPhone, and check
your handset first on the
device compatibility page —
almost everything sold since 2019 works, but carrier-locked phones are the exception.

One setting people forget: turn data roaming on for the travel eSIM once
you land. On a travel profile that is normal and costs nothing extra; it is the switch that
makes the whole thing work.

If you are making a trip of it

Munich is two hours from Salzburg and four from Prague, and plenty of people string the
three together. A single-country plan stops at the border, so if you are crossing, look at a
regional plan instead — the same logic applies whether you go south to
Austria or north-east to
Czechia. Our full country write-up
for Germany itself is the
Germany eSIM guide.

Questions people ask

Will an eSIM work better than roaming inside the tents?
No, and nobody selling you one should claim otherwise. Congestion hits every network on the
field equally. What an eSIM changes is the bill, not the bars.

Which German network should I be on?
Telekom, Vodafone and O2 all bring extra capacity to the Wiesn. Coverage differences matter
far more on a train through Bavaria than on the festival ground.

Can I keep WhatsApp on my normal number?
Yes. The eSIM carries data; your usual SIM keeps your number and your messaging account.

When should I buy?
Any time before you fly. The plan starts on first connection in Germany, not at purchase, so
buying early costs you nothing.

Is the festival free to enter?
Entry is free; the beer, the food and the rides are not. Table reservations for the big tents
go months in advance, though every tent keeps unreserved space for walk-ins earlier in the
day.