1&1 Internet und Mobilfunk is a telecommunications provider based in Germany, offering a comprehensive range of services including high-speed internet, mobile phone plans, and a selection of devices such as smartphones, tablets, and laptops. The company’s website, 1und1.de, serves as a platform for customers to explore various affordable tariffs, promotions, and bundled services designed to meet their connectivity needs. Targeting both individual consumers and businesses, 1&1 aims to provide reliable internet and mobile solutions that are easy to access and competitively priced. With options for DSL, fiber-optic connections, and mobile data plans, the company caters to users looking for seamless online experiences. Additionally, 1&1 offers domain registration, website hosting, and email services through its sister company, IONOS, making it a one-stop solution for digital communication and connectivity.
1&1 - Internet & Mobilfunk faces significant criticism from its customers, with a staggering 93% of reviews rating the service poorly. Many reviewers express frustration over the company's failure to deliver on promises, particularly regarding network reliability and customer service.
Complaints about poor network coverage, especially after a recent network transition, are prevalent, with users reporting frequent outages and connectivity issues. Additionally, the customer service is described as unhelpful and unresponsive, with several customers noting that their problems remain unresolved despite multiple attempts to seek assistance. While a few positive reviews highlight the company's quick delivery of products and some effective customer support experiences, these are vastly outnumbered by the negative feedback.
Summary generated with AI from recent reviews
Each source counts by its number of reviews. Only reviews written by people are scored.
| Source | Rating | Reviews | Weight | 6-mo | Fake risk |
|---|---|---|---|---|---|
Trustpilot Imported Trustpilot reviews | 1.3 | 1,000 | 100% | +0.1 | ● Low |
Monthly average rating from reviews written by people · latest review Jul 2025.
| Month | Average | Reviews |
|---|---|---|
| Feb 25 | 1.3 | 33 |
| Mar 25 | 1.3 | 211 |
| Apr 25 | 1.2 | 212 |
| May 25 | 1.3 | 217 |
| Jun 25 | 1.3 | 147 |
| Jul 25 | 1.4 | 180 |
Share of positive (4–5★) and negative (1–2★) reviews mentioning each topic · based on the 500 most recent reviews.
“I've been a continuous DSL customer with 1&1 since the beginning of 2000”
“Kundenservice unterirdisch”
Same method for every company: overall rating, legitimacy checks, the average rating of reviews mentioning each area and the 6-month trend · Mobile Carriers.
| Company | Overall | Legit | Service | Website & app | Trend | Reviews |
|---|---|---|---|---|---|---|
 | 1.3 out of 5 (poor) | 100 out of 100 | 1.5 out of 5 (poor) | 1.6 out of 5 (poor) | — | 1,000 |
| 3.8 out of 5 (good) | 50 out of 100 | 3.6 out of 5 (good) | 2.3 out of 5 (poor) | — | 1,060 | |
| 4.6 out of 5 (good) | 100 out of 100 | 4.8 out of 5 (good) | 4.1 out of 5 (good) | — | 1,060 | |
| 3.3 out of 5 (fair) | 100 out of 100 | 3.1 out of 5 (fair) | 2.3 out of 5 (poor) | — | 1,060 | |
| 3.9 out of 5 (good) | 100 out of 100 | — | 3.5 out of 5 (good) | — | 1,060 |
Bottom line: 1&1 - Internet & Mobilfunk is #5 of 5 on overall rating in this group. On service, Maya Mobile scores higher (4.8 vs 1.5).
500 reviews of 1&1 - Internet & Mobilfunk. Filter by what matters to you.
1.Danke an Hern Rusovski, ich war erstaunt über die sofortige Hilfe.2.Etwas mehr Sprechzeit für die Berater. 3.Danke für die sofortige Hilfe! Gut gemacht! Der Berater war sehr Hilfsbereit und hat mich echt getröstet.
Der Kundenservice und andere Abteilungen sind der zuvorkommend und helfen, wo sie können. Die Preis-Leistung ist auch optimal.
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1&1 Internet und Mobilfunk is a telecommunications provider based in Germany, offering a comprehensive range of services including high-speed internet, mobile phone plans, and a selection of devices such as smartphones, tablets, and laptops. The company’s website, 1und1.de, serves as a platform for customers to explore various affordable tariffs, promotions, and bundled services designed to meet their connectivity needs. Targeting both individual consumers and businesses, 1&1 aims to provide reliable internet and mobile solutions that are easy to access and competitively priced. With options for DSL, fiber-optic connections, and mobile data plans, the company caters to users looking for seamless online experiences. Additionally, 1&1 offers domain registration, website hosting, and email services through its sister company, IONOS, making it a one-stop solution for digital communication and connectivity.
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