How did u get to this screen? Please help
Go to this link and sign in with Att account to Refresh connection.

AT&T Wireless support for AT&T Wireless customers - AT&T® Official Site
Get help with your wireless phone, plans, orders, and voicemail. Learn how to fix common issues or contact us. AT&T has you covered with AT&T Wireless support, troubleshooting, how-to articles, & videos.
www.att.com