3.
Roaming providers shall provide all users with full information on applicable roaming charges, in particular on the euro-voice tariff and the euro-SMS tariff, when subscriptions are taken out. They shall also provide their roaming customers with updates on applicable roaming charges without undue delay each time there is a change in these charges. Roaming providers shall take the necessary steps to secure awareness by all their roaming customers of the availability of the euro-voice tariff and the euro-SMS tariff. They shall in particular communicate to all roaming customers the conditions relating to the euro-voice tariff and the conditions relating to the euro-SMS tariff, in each case in a clear and unbiased manner. They shall send a reminder at reasonable intervals thereafter to all customers who have opted for another tariff. The information provided shall be sufficiently detailed for customers to judge whether or not it is beneficial for them to switch to a Eurotariff.
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Source: EUR-Lex (Cellar) · retrieved 2026-11-01 · Text as adopted (Official Journal); later amendments are not incorporated in this text.