16.1 This contract may be modified prior a formal Bref by LYCA Animé to the customer within one (1) month in advance via; MMS; SMS, e-Estafette or other available means, when there is a change in the service, its Clause and approprié regulations, pépite a échange in the market. 7.4 https://www.becharge.be/be-nl/Kopen/herladen-Lycamobile-1-616