How long is my top up valid for? In this article SIM airtime is the total number of days you get each time credit is applied to your account. With every top up, your airtime refreshes to 60 days. You can dial *120# to check your airtime status. Related articles How can I check my balance? What prepaid plans are available from Digicel? Useful network and dial codes How to request credit How to send credit to someone