content: that phone stuff is done because of bots, they dont actually have your real identity. to get it either you give it away, which most do (out your real name and allow map tracking of home place) or law enforcement has to take it from carriers and banks (who always have it) say you never gave google anything, then you pay on google play.. boom bank can be linked to you of course as banks have your identity also. everything else is just rather simple models that your ads identifier (not linked to your real identity..) falls into to show u stuff u will click on