The download button opens the iTunes App Store, where you
may continue the download process. You must have iTunes installed with an
active iTunes account in order to download and install the software. This
download may not be available in some countries.
Battery usage and device data usage:- Check Internet usage per month- Check data sent and received- Monitor internet usage- Find device information- Battery level indicator- Internet usage time- Video playback time- Audio playback time- Set notification for billing date- Set total internet quota per month and more..