The four key mobile operators in Germany are:
- T-Mobil (www.t-mobile.de): operated by the former state monopoly Deutsche Telekom.
- Vodafone(www.vodafone.de): Formerly Mannesmann.
- E-Plus ( www.eplus.de): It positions itself as an low-cost provider, offering a wide range of calling plans for people who use their mobiles infrequently.
- O2( www.o2online.de): The youngest competitor in the market; can be an attractive option if you don't want to get a fixed line or want a single phone number.