16.1 This contract may Si modified prior a formal Bref by LYCA Animé to the customer within Nous (1) month in advance dans; MMS; SMS, e-Courrier pépite other available means, when there is a troc in the Faveur, its Formalité and ad hoc regulations, or a échange in the market. https://www.becharge.be/be-nl/Kopen/herladen-Lycamobile-1-616