When registering, I did not enter my kit S.No. Where can I enter this after logging in?
Step #1 is to goto https://marketplace.att.com/quickstart
A link is provided there for SIM card activation:https://marketplace.att.com/activate
It wasn't clear to me, but the 'kit part number' for my 2nd Gen kit is 'AES-ATT-M18Q2FG-SK-G'. This was on the starter kit box. The serial number was printed below it, in my case 'A000xxxx'. I was told erroneously that the serial number was located on the LTE chip label on the board, which also has a serial number.
no further responses.