Will storing an iphone 6 in my pocket cause groin cancer of any form?

Doubtful: I think if all the studies they've done to show whether or not talking on the phone all the time with the phone up against our head won't increase our chances of getting brain cancer, I highly doubt it will increase your chance of getting any kind of groin cancer but to be fair I don't think they've done many (if any) studies to be completely sure. Just logic would lead me to that conclusion.

Phones and CA: Several studies have looked at cellphone use and CA. The largest which followed Pts for 20 years showed no increase in brain tumors. Other studies are on going... but the consensus now is that phones do not pose much of a risk for brain tumors. There is no data to even look at in regards to CA in the groin area. There are plenty of other things to avoid that we know cause CA, like smoking...