By now, the notion that Windows Phone 8 can store its maps offline should be familiar to most of you. Instead of pulling data “from the cloud”, your phone can simply have whole swaths of areas already on board, leaving the CPU (and battery) for other tasks.
While supremely useful, it can be overkill too. Specifically we mean if you spend a majority of your time in one region (or state), it doesn’t make sense to fill up your phone with say the whole United States. Yet that is exactly how the Verizon Nokia Lumia 928 is set up, including maps for the Cayman Islands (21.8 MB) and the Bahamas (24.9 MB) and USA (2,518.8 MB, or about 2.4GB).
We’ve been able to verify this on at least two Lumia 928s, so we know it’s not an accident. We can understand how Verizon would want the maps preloaded, as presumably a lot of people will never know about that feature—so why not make it so by default? The problem of course is if you rarely travel (especially to those islands), you're wasting a significant amounts of space. Instead, you could get that storage back and just download state-by-state.