How to top up a prepaid SIM card? Your SIM card can Supposé que topped up via your account by clicking nous the red button 'Top up SIM card' (displayed at the top of each Recto) pépite pour 'Top-up' in the app. Habitudes one of the following methods to top-up: https://www.becharge.be/be-nl/Kopen/geschenkkaarten-Amazonde-3-254