16.1 This contract may be modified prior a formal Simplifiée by LYCA Amovible to the customer within one (1) month in advance via; MMS; SMS, e-Correspondance pépite other available means, when there is a échange in the Prestation, its Formalité and adéquat regulations, or a permutation in the market. Op https://www.becharge.be/be-nl/Kopen/herladen-Lycamobile-1-616