Some of those don't look like problems from the mobile side of things. For mobile, replace "you’ll need to choose" with "you're forced to use". While the OS and

Some of those don't look like problems from the mobile side of things. For mobile, replace "you’ll need to choose" with "you're forced to use". While the OS and security stuff might be simpler, it's not exactly solved on the handsets. Depending on the platform, you'll having to deal with potentially dozens of device models and several different form factors (BlackBerry, I'm talking about you). And if you find a serious bug in the current live app? Have fun waiting several days to a week to get it updated in the app store/market/world. Building software is hard.