j_ozzy:

Can you explain "my carrier (Wind Canada)'s roaming partner (Rogers)'s 2.5G signal is not call-compatible in the WIND home coverage areas"

These two networks are available in the same geographic location?

If so, it could be an issue with handover from a roaming network to your home network.

In your network selection menu, how is the network set-up? Automatic, or manual?

Hope that helps.