Cingular and AT&T Wireless
Cingular was formed from a massive group of cell-phone companies to become one of the nation's largest providers in 2000. In 2004, Cingular won the rights to AT&T Wireless after a bidding war with European cell-phone giant Vodafone. Soon after that acquisition, in late 2005, Cingular announced that they would rebrand themselves under the AT&T name. Thus, Cingular became AT&T (technically AT&T Mobility). They are the exact same company with the exact same policies.
Rollover Minutes
The rollover minute is a way to save previously unused minutes. It's a safety net as it allows someone to keep the minutes they didn't use in one month in order to use them in another month. They can protect from additional minute charges, as once cell phone users exhausts their regular minutes, they can draw from a well of rollover minutes with no additional charges. It's important to remember, though, that rollover minutes expire after twelve months.
Getting Rollover Minutes
In order to obtain rollover minutes, a customer must be with AT&T (formerly Cingular). Still, not every AT&T customer also has rollover minutes. The customer also needs to be on a plan that has rollover minutes included. Luckily, most of AT&T's plans include the rollover minutes feature.
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