you can either call AT&T or you can activate through the website.
https://www.wireless.att.com/GoPhoneWeb/goPhoneLanding.do?method=activatePayGo
Since it is a different size SIM, you can activate the new sim on your old number.
you can either call AT&T or you can activate through the website.
https://www.wireless.att.com/GoPhoneWeb/goPhoneLanding.do?method=activatePayGo
Since it is a different size SIM, you can activate the new sim on your old number.