2. Roaming providers may offer, and roaming customers may deliberately choose, a roaming tariff other than one set in accordance with Articles 4, 5, 6 and paragraph 1 of this Article, by virtue of which roaming customers benefit from a different tariff for regulated roaming services than they would have been accorded in the absence of such a choice. The roaming provider shall remind those roaming customers of the nature of the roaming advantages which would thereby be lost.
Without prejudice to the first subparagraph, roaming providers shall apply a tariff set in accordance with Articles 4 and 5, and paragraph 1 of this Article to all existing and new roaming customers automatically.
Any roaming customer may, at any time, request to switch to or from a tariff set in accordance with Articles 4, 5, 6 and paragraph 1 of this Article. When roaming customers deliberately choose to switch from or back to a tariff set in accordance with Articles 4, 5, 6 and paragraph 1 of this Article, any switch shall be made within one working day of receipt of the request, shall be free of charge and shall not entail conditions or restrictions pertaining to elements of the subscriptions other than roaming. Roaming providers may delay a switch until the previous roaming tariff has been effective for a minimum specified period not exceeding two months.