coltsbr
Well-known member
About carrier settings updates in iTunes
or
iOS 4: About over-the-air carrier settings updates
Carrier settings updates are small files (about 10k) that are downloaded from iTunes to be installed on your iPhone or iPad Wi-Fi + 3G. The carrier settings can include updates to the default APN (how the device accesses the carrier's cellular data network). The carrier settings for iPhone also include special dialing codes at Settings > Phone > [Carrier] Services, default settings for Stocks, Maps, Weather, and other items. You should install the latest carrier settings updates for your device as soon as they are available.
Good find, Thanks for the info.