[sd_matto]

I can make calls, but which network am I using (e.g., Sprint network, or ATT/TMo (through SIM)?

The reason I ask is that when I check on available networks, phone only returns ATT and TMo, and when it shows "Sprint", it is followed by "No Service". Plus, there is mention in this thread of Civic still working on the Radio Interface Layer (RIL); not sure if this is just to get data going, or also to get CDMA voice.

Just curious for any thoughts, as I dont want to rack up a lot of voice roaming charges on GSM network (if I can avoid it).