Actually once I re-read the request, I'm wondering you had meant to pull data from another phone surreptitiously? As a parent of adult children, I might have been tempted when they were teens, so I'm not going to judge but it seems like a near impossible task without host mode, as mentioned above.

Beaming vcards should be possible with almost every phone but since there are many incompatible phone operating systems I'm guessing that there isn't a good way to do what you want.

Terry