1. Browsing never uses minutes. Browsing is data. If you have the unlimited plan, browsing doesn't really matter.
2. UMA (
Generic Access Network - Wikipedia, the free encyclopedia) is basically voice over the WiFi network.
If you used the Switch Device Wizard to bring over data and settings form another BlackBerry, UMA will fail. If you do a full backup and restore, UMA will fail. Please check out
Main Page - BlackBerryFAQ