She puts her iPhone SIM card into her old RAZR when we go on bike rides. Well today, we were glad she didn't ride with her iPhone. Somewhere along the ride, she exclaims "Where is my phone?!" We ride back the last few miles to when she remembered having it last. Well, the phone is gone. I called AT&T from my phone and we deactivated her SIM (So if anyone got a hold of it, they wouldn't be able to download songs and ringtones to their new found phone using her AT&T account) Well now we're back at home, and I've got an old SIM card of mine. When we put it in her iPhone, the phone still says "No Sim" Can we somehow reactivate her phone?