1&1 All-Net Flat M
1&1 · O2/Telekom network · mobile plan
Offer −43%No minimum termUnlimited data5G
1&1 All-Net Flat M costs €19.99 per month instead of €34.99 and offers unlimited data allowance, unlimited calls, and 5G. Contract: no minimum term. Network: O2/Telekom network. Price as of: 29 August 2026.
19,99 €per month34,99 €−43%
All features in detail
| Provider | 1&1 |
|---|---|
| Network | O2/Telekom network |
| Monthly price | 19,99 € |
| Regular price | 34,99 € |
| Data allowance | unlimited |
| Mobile standard | 5G |
| Calls | Unlimited calls (unlimited) |
| SMS | Unlimited texts |
| Contract term | no minimum term |
| Activation fee | none |
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Frequently asked questions
What does 1&1 All-Net Flat M cost?
€19.99 per month — promotional price instead of €34.99. No activation fee applies.
How much data allowance does 1&1 All-Net Flat M have?
The data allowance is unlimited.
Which network does 1&1 All-Net Flat M use?
1&1 uses the O2/Telekom network. 5G is supported.
Can I cancel 1&1 All-Net Flat M on a monthly basis?
Yes, the plan has no minimum term.
Where the data comes from
The plan data comes from the providers' official websites and is automatically synced daily at 04:00. Price as of this page: 29 August 2026. Information provided without guarantee; the provider's contract is binding. Operator: MARKTIX AG, Cham (Switzerland) — see Legal Notice.