I use an unlocked Cingular V551 with some SEEMs edited for my main cellphone service, Cingular GSM. I use an unlocked, unbranded Motorola C350 for my Cingular GSM Prepaid service.

Once I edited the SEEM files on my V551 I noticed I have the ability to choose "line 1 or line 2".

Would it be possible to have my prepaid service or service from another carrier for that matter on "line 2"?

Would Cingular allow the same SIM card to have 2 seperate phone numbers?

Would it be technicially possible for another carrier to activate service with an active Cingular SIM?

Any info would be great...

Hman