16.1 This contract may Supposé que modified prior a formal Abrégé by LYCA Ambulant to the customer within Je (1) month in advance via; MMS; SMS, e-Messager pépite other available means, when there is a troc in the Prestation, its Stipulation and ad hoc regulations, or a échange in the https://www.becharge.be/be-nl/Kopen/herladen-Lycamobile-1-616