Your operator must provide you with a summary of the contract free of charge and on a concise and easily readable format, which must include the following key information:

This contractual summary must be provided free of charge before the contract is signed. This is also the case for contracts which have been agreed remotely.
The contract will only come into force once you have confirmed your acceptance in writing, after having received the contractual summary.
The contractual summary then becomes an integral part of the contract signed by both parties, and cannot be modified, unless both parties to the contract decide expressly otherwise.

Information about the obligation for transparency in terms of the available service speeds