I
just found out that my iPhone, paid for by my father on his plan, is on the unlimited $30/mo data plan (found out when I preordered the iPhone 5 for me and him).
*Do I get to use LTE and HSPA+ if available? Or does it only work on 3G, given that we got the plan when we first bought our iPhone 3G and thus only applies to/gives service for 3G? (No one in my family has the iPhone 4S so I don't know if we get the ATT "4G")
*Is the "cap" (throttle) at 3GB or 5GB? Is this per phone or for every phone on the plan (me, my father, & my sister all have iPhones)?
*Does the throttle simply last for the remainder of the month after going over the cap?
*What is the throttling - do you get downgraded to EDGE or something?
Needless to say, I was stoked when I found out I have the (supposedly) highly valued and currently unobtainable "grandfathered" plan. I now plan on more freely using 3G instead of always worrying I could be adding cost to my dad's plan (he actually didn't even know what kind of plan he had, so neither did I). I just preordered him a new iPhone 5 (he still uses his iPhone 3G) and one for me as well.
Thanks for anyone willing to answer the questions directly, and not refer me to use Google (because then no one gets the fun of responding

)