16.1 This contract may Quand modified prior a formal Raccourci by LYCA Changeant to the customer within one (1) month in advance par; MMS; SMS, e-Correspondance pépite other available means, when there is a échange in the Appui, its Exigence and approprié regulations, pépite a échange in the market. 8.3 https://www.becharge.be/be-nl/Kopen/herladen-Lycamobile-1-616