Alcatel One Touch 871A User Manual

Hi Barb. I'm a bit confused with the problem. Are you not able to make calls? Restart your phone to refresh network signal then try making a call. Also, make sure that you have minutes in your account. If you can't use data connection, do you still have data left in your account? Also, check the APN settings, make sure it is correct in accordance to AT&T's APN settings.

It means you have an unread message. Check your messages. 

Press and hold the red end call button.