Here are the main telecom providers in Germany:

• Vodafone: Founded in 1991, Vodafone is one of Germany’s biggest mobile network operators with a customer base of over 45 million. It is widely known for its excellent coverage, with 4G download speeds of up to 150 Mbps. According to Opensignal, Vodafone ranks among the highest for 4G download speed nationally.

• Telekom: Founded in 1995, Telekom is the largest mobile network operator in Germany with a customer base of over 40 million. It is well-known for its excellent coverage and speeds, with 4G download speeds of up to 150 Mbps. Opensignal ranks Telekom as the highest in Germany for both 4G availability and latency nationally.

• O2: Founded in 1994, O2 is the third-largest mobile network provider in Germany with a customer base of around 25 million. It is well-known for its fast 4G download speeds, ranging from 14-50 Mbps. Opensignal ranks O2 as the highest in Germany for 4G download speed nationally.

• MVNOs: There are also several Mobile Virtual Network Operators (MVNOs) operating in Germany, such as Drillisch, Aldi Talk, Freenet Mobile, and Lycamobile. These providers generally offer lower prices for their services than the larger network operators, but usually have more limited coverage.