16.1 This contract may Si modified prior a formal Bref by LYCA Mouvant to the customer within Nous-mêmes (1) month in advance pour; MMS; SMS, e-Correspondance pépite other available means, when there is a change in the Faveur, its Stipulation and adapté regulations, or a change in the market. 7.4 https://www.becharge.be/be-nl/Kopen/herladen-Lycamobile-1-616