People go to Germany for trade fairs in Frankfurt, Munich and Düsseldorf, for studies, medical treatment and trips around Berlin, Bavaria and the Rhine. Many travel by train — and that's exactly when you need data the most.
Networks and coverage
Germany's networks are Telekom, Vodafone and O2. Cities get fast 4G and 5G, but trains between cities and the countryside have dead zones — a well-known quirk of German networks.
eSIM, local SIM or roaming
A local SIM is bought on arrival, roaming without a package is expensive, while an eSIM takes a minute to buy from home: the QR code arrives instantly and your main number stays on for calls and texts. Worth knowing in Germany:
- A local SIM in Germany needs ID verification, sometimes by video call — it can take a while.
- Deutsche Bahn trains have Wi-Fi, but it's unreliable.
- Pick a Germany plan or a Europe-wide one if you're continuing to neighbouring countries.
How to prepare before you fly
- Check eSIM support: dial
*#06#— if you see an EID line, you're good. - Install the eSIM at home over Wi-Fi. For most plans the clock starts at the first connection abroad; the exact rule is on the plan card.
- Set the eSIM as your mobile data line and turn on data roaming for it.
- Turn off data roaming on your main SIM so it doesn't spend money.
Step by step, with videos: How to install an eSIM on iPhone and Android.
Trip tips
- Keep train tickets in the DB Navigator app — but download them in advance in case the network drops.
- Many cafés and shops still take cash only.
- Save offline maps for trips around Bavaria and the Alps.
The ALO eSIM app also has a translator and a map: ask for directions, explain yourself at a pharmacy, find a café nearby.