No
Yea at least on my iPod most apps don't use data indent know if it's different for an iPhone though
No. Downloading is when you receive data from the internet. If you have downloaded a song you can transfer it between any device you have without worrying about downloading over and over . To be clear you only download when receiving data through the internet. Taking a CD and transferring it to your computer then your I Phone is also not downloading.
TX = Data Transferring RX = Data Receiving
Yes there are many Apps out there ex: Find My iPhone and also if you have iCloud account setup you can remotely erase the data from lost/stolen iPhones
Storing data, transferring data from on computer to another.
if that app needs the intenet then yes
transferring data such as music or pictures from your computer to your flash drive
Transferring files
Depends. If you have iOS 4 or later, you will have multitasking, like on your computer, you can have multiple windows or applications open at the same time. Well, same thing on your iPod or iPhone. (or iPad). The apps can run backround processes. These processes may use data.
Considering current App usage data released to the public, there are indeed people who are addicted to iPhone Apps. Users of iPhones spend the most time using Apps, compared to other smartphone users.
makes sure no data is transferring and removes it from use from the computer until it is put back in if its removed while data is transferring then theres a good chance the data will be corrupt
The windowing is a feature of manage bandwidth of transferring data.