First of all, thank you for your repliesDoes wind uses SIMs? Or are they working in CDMA?
However, they r neither GSM or CDMA. They r thru UMTS @ frequency of 2100Mhz. The same which Data Carriers use. As of now no handsets r made standalone for UMTs. Which is why, we need to buy the handsets from WIND.
The latest iPhone-4 is the first standalone mobile handset to be also made for 2100Mhz. Off course, from 800-1900-2100. Thus, would work with all networks, probably. As of date it's not yet launched in Canada. Expecting by 24th July 2010.