I am aware of what will not work without Blackberry Internet Service - but the apps I am talking about are TCP/IP apps and do not require BIS. I am able to use Opera Mini to go online to find apps, then invoke the BB browser to do an OTA install. The errors I receive are similar - and seem to point towards a TCP/IP issue - although I cannot find any settings in this phone. Gmail error: This program requires a working data connection.... YIM error: Service not enabled for this handheld. Google maps: Network unavailable. I know several people who are using these apps on Boost with 7100i. Perhaps I need different service books?