Oxigeno is a sponsored mobile services (voice, messages and mobile data) offered in Mexico to help mexicans stay connected. Oxigeno allows you to get packages of data, minutes and/or messages over the best network since our Smart SIM Cards is always connecting to the network with the best signal to keep you well connected. Based on the sponsorship, you could buy extra packages directly from the app and pay for them with a card or in convenience stores. You can also go to the recharging points to directly buy your packages.