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