AT&T Follows T-Mobile – Allows Mobile Data Rollovers
Beginning January 25th, 2015 AT&T follows T-Mobile and allows you to rollover data. There’s only two small gotchas. Rollover Data is used only after the full data allowance for your Mobile Share Value plan in the current bill cycle is used. And only one month carries over before expiring and the next month’s unused portion rolls over. If you go over your data allotment and purchase additional data – that purchased data won’t roll over.