16.1 This contract may Si modified prior a formal Bref by LYCA Amovible to the customer within Je (1) month in advance à cause; MMS; SMS, e-mail or other available means, when there is a change in the Bienfait, its Exigence and adapté regulations, pépite a troc in the market. https://socialeweb.com/story4575676/peu-connu-faits-sur-lycamobile-betaalkaart-voor-gsm