Just select how many prepaid minutes you want to add to your phone, and then follow the prompts to pay for the minutes. You can pay for added minutes by a credit card, debit card, or electronic check.
The Pay-As-You-Go is for those who want to have total control and important convenience of the service. The AT&T Free2Go Wireless gives you the wide freedom of a wireless service and the considerable flexibility of managing your wireless budget.
The service includes wireless text messaging, voicemail with a message waiting indicator, three-way calling, and other useful options. The AT&T offers its nationwide network to its customers, so no roaming fees will be charged for this service.
If you fail to purchase new minutes with the AT&T's Pay as You Go, then expiration will occur. A $15 card will expire after 30 days, a $25, $50, or $75 card will expire after 90 days, and a hundred dollar card will be valid for a year. However, when new minutes are purchased, all minutes on that account are good until the latest possible expiration date. Expiration is a little negative aspect to adding prepaid minutes for cellular phones with the AT&T GoPhones. But it is entirely covered by the total convenience of the service.