"Unregistered SIM" -- Problems With New SIM Card. Lost Old One!

[AlyssaNicole]

Hello.

Basically, I bought a new SIM card today, as I lost my old one. I purchased it at the store, and she lady was supposed to activate it to my account. She had my account information up, and scanned the SIM card, and I took it home, to find out that it is just saying "Unregistered SIM". I can't Update my SIM in My Account, because I don't have the old SIM card number.

Any help?

***Edited to add labels***

[10yearfido · Accepted solution]

Call in. They can do switch you to the new SIM without you having the old SIM. If you do it online you need both handy.