ok ok... I'm going to give you the run down here at least on the BB plans.
It does NOT cover lost/stolen
there is NO deductible
it covers accidental damage/normal wear/cracked screens/water damage. all damage must be within reason, some stores will turn u down if its completely ed, run over, caught fire, etc.. also accessory replacement (done through 1888-best-buy)
PREPAID cell phones get exchanged in store. (boost mobile, virgin mobile, etc, etc)
POST PAID/CONTRACT phones are replaced with a refurb that usually take 3-5 days to come back to the store. Majority of the phones work like this, I said majority but I haven't seen one in awhile that doesn't. Its called, Rapid Exchange.
Within a few hours of your phone being checked in at the store (I've seen sometimes less than 4 or 5 hours), the refurb is already being processed and on its way to being shipped, thats why its a rather quick turn around time. only waiting time is shipping time..
You keep the battery/SIM card/SD card, while the phone and battery door get sent out.
You can leave a deposit for a loaner phone, but you don't have to. most are $50 but i've seen some loaners at $100 or $150.
Only time it takes longer is if the phone is on backorder or they don't have supply of refurbs. In either case the guy at geek squad has 3 options. they can either offer you a substitute that will come instead of your phone (if it at all prompts for it, doesn't happen often), set the phone on backorder which obviously means you won't see it for a bit or they can set the phone under a "repair" which means they will actually repair the phone instead of replacing it with a refurb.
They offer it in either $10/month options or up front cost of $200 i believe.