T400 WWAN - AT&T

[abester1]

Hi All,
I have a general question regarding the T400 (or T500 for that matter) and using the WWAN option on the AT&T / Cingular Network.

I already have a PC-card WWAN Solution with a SIM card inside of it. I was wondering if I can just take the SIM Card from the pcmcia card and install it in the T400 sim card slot and get the same coverage. Is the PC "locked" for a single SIM card or can it take other active/working SIM cards?

Also, is there any requirement to buy a new data service plan for WWAN for new laptop??

I guess what I want to do is take my existing WWAN SIM Card from my pcmcia wireless card and install it in the thinkpad without activating a new service contract with AT&T.

Any idea's? or am I looking for trouble?

Thank you in advance...

[SHoTTa35]

it can take any SIM. Just pop out yours and slide it in and off you go. The card itself is probably locked to AT&T however but if you could unlock it you could slide in a T-Mobile, Vodaphone, O2, or another SIM also.