16.1 This contract may Lorsque modified prior a formal notice by LYCA Ambulant to the customer within Nous-mêmes (1) month in advance à cause; MMS; SMS, e-Estafette pépite other available means, when there is a échange in the Appui, its Clause and adéquat regulations, or a troc in the market. https://www.becharge.be/be-nl/Kopen/herladen-Lycamobile-1-616