Download the Official Top up App for Expresso telecom Senegal prepaid mobile phones – the fastest, easiest, and the most convenient way to recharge your phone! Buy airtime from anywhere in the world! Expresso telecom Customers – Buy credit for your own phone in Senegal or while traveling overseas. Friends or Family in the USA, Canada, France or anywhere else in the world – Add credits to your loved ones’ Expresso telecom prepaid phones in Senegal without paying any foreign transaction fees.