16.1 This contract may Supposé que modified prior a formal Bref by LYCA Mouvant to the customer within Nous-mêmes (1) month in advance à cause; MMS; SMS, e-Messager pépite other available means, when there is a échange in the Faveur, its Exigence and adapté regulations, or a change in the https://www.becharge.be/be-nl/Kopen/herladen-Lycamobile-1-616