We have a fairly high level of tablet users in our audience, yet we have very low Mobile Open Percentage rates.  We understand the low mobile open rate is affected by Apple's policies, but - in general - would tablets be considered a "mobile device"?    There are many people who use them only when connected to wifi, so they are not being used as a true "mobile device".  Can you tell the difference?  How would that affect the numbers reported? ... View more