If you are a current AT&T mobile phone user:
On August 15th, AT&T is rolling out a new promotion that will increase your data plan for free. I just got 5 additional GB for the same price as my current plan. I found this out when I added an additional line to my plan. I was a little surprised that AT&T didn’t notify existing customers about the promotion so I’m passing on the news. You need to call customer service, or go online to make the change. This offer expires 11/15/2015.
Information is contained in the link: