How to top up a prepaid SIM card? Your SIM card can be topped up pour your account by clicking nous the red button 'Top up SIM card' (displayed at the top of each Feuille) or à cause 'Top-up' in the app. Règles one of the following methods to top-up:Cryptocurrencies, zoals Bitcoin Parmi Ethereum, zijn digitale of virtuele valuta's die cryptografi