I have the AT&T Skyrocket and it came preinstalled with City ID which shows the city/state of the call. From what I've read this app is trial version, and then you have to pay for it? I've had my phone for 3 weeks, and I have yet to see the prompt asking me to download the full version. When I call the lovely people at AT&T, they seem to have no idea what this app is, and they've told me to call Samsung. Is this a subscription based app? What's the charge? How come I haven't seen a prompt to subscribe?