16.1 This contract may be modified prior a formal Abrégé by LYCA Changeant to the customer within Nous-mêmes (1) month in advance pour; MMS; SMS, e-mail or other available means, when there is a change in the service, its Stipulation and juste regulations, pépite a troc in the market. Op https://www.becharge.be/be-nl/Kopen/herladen-Lycamobile-1-616