Stay Connected in Germany

Germany's connectivity is generally excellent in cities and along major transit corridors, with 4G effectively universal and 5G now standard across Berlin, Munich, Hamburg, Frankfurt, and Cologne. Rural areas tell a different story. Head into the Black Forest, the Bavarian Alps, or stretches of the former East, and you'll hit dead zones that feel surprising for Western Europe. Germany has historically lagged its neighbours on mobile infrastructure, and it shows in those gaps. The other quirk involves public WiFi, which was held back for years by Störerhaftung (operator liability law), so cafes and hotels moved slowly to offer free WiFi. That's largely resolved now. You'll still encounter venues where the WiFi is gated, slow, or simply absent. EU roaming rules apply if you're arriving from another EU country, which makes the connectivity question much simpler for European travellers than for those flying in from further afield.

Three carriers dominate Germany: Deutsche Telekom (branded as Telekom, sometimes T-Mobile), Vodafone, and O2 (Telefónica). Telekom has the best overall coverage. It pulls ahead in rural areas and on the Deutsche Bahn rail network, where the others can disappear into tunnels and cuttings. It's also the most expensive. Vodafone runs a close second on coverage and tends to be competitive on data speeds in cities. O2 is the budget option, with noticeably weaker rural coverage but solid performance in Berlin, Munich, Hamburg, and other major cities, often at half the price. Speeds on 5G in city centres routinely hit 200-400 Mbps. 4G typically delivers 30-80 Mbps. On ICE trains, expect frequent dropouts regardless of carrier. This is a long-running national grievance. MVNOs like Aldi Talk (O2 network), Congstar (Telekom network), and Lidl Connect offer the same coverage as their host networks at substantially lower prices, which is worth knowing if you're staying longer.

Public WiFi in Germany at airports, hotels, and cafes is now widespread. Approach it with reasonable caution. Germany isn't unusually dangerous. The real risk is that any open network anywhere in the world lets other users on the same network potentially intercept unencrypted traffic. Travellers make attractive targets because they tend to log into banking, email, and booking accounts from unfamiliar networks. Most modern apps and websites use HTTPS by default, which handles a lot of the risk, but a VPN adds an encrypted tunnel that protects everything else, including DNS lookups that can leak what sites you're visiting. NordVPN is one option commonly used for this, with servers throughout Germany and neighbouring countries. The practical advice: turn on the VPN before connecting to hotel WiFi, leave it on for any banking or work email session, and stay extra careful with open networks at major train stations where dwell time and traveller density make them happy hunting grounds.