O2 vs 1&1: which is better? Comparison 2026

By our public methodology O2 scores 91 out of 100 and 1&1 scores 78. Below: the factors and facts where they differ, each fact with its source.

Mobile operators in Germany 2026: a ranking built on verified facts How we rank

1

O2

91/100
3

1&1

78/100

Score breakdown

O21&1
Network9975
Cost9572
Service67100
Transparency10067

Pros and cons

O2

  • Reference tariff among the cheapest in the country
  • Listed by the telecom regulator
  • Commercial 5G for consumers
  • High officially stated population coverage
  • Human support is not 24/7

1&1

  • Listed by the telecom regulator
  • Commercial 5G for consumers
  • Runs its own radio network
  • Offers eSIM to new customers

Facts side by side

FactO21&1
Listed by the regulatorYes bundesnetzagentur.deYes bundesnetzagentur.de
Own radio networkYes bundesnetzagentur.deYes unternehmen.1und1.de
Commercial 5GYes o2online.deYes mobile.1und1.de
Stated population coverage99% o2online.deNot verified
Price index (100 = cheapest in the country)111 o2online.de156 mobile.1und1.de
Commercial 4GYes o2online.deYes mobile.1und1.de
eSIMYes o2online.deYes mobile.1und1.de
International roamingYes o2online.deYes hilfe-center.1und1.de
Self-care appYes o2online.deYes 1und1.de
24/7 human supportNo o2online.deYes 1und1.de
Tariff terms publishedYes o2online.deYes mobile.1und1.de
Complaints procedure publishedYes o2online.deNot verified

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