Here's a sitaution. I've been having a long chat with someone on iMessage on my phone. This chat contains a bunch of images, a few videos, etc.. over the course of a day. My iPad is in my bag, in airplane mode because I didn't want it going off all the time along with my phone. I take it out to read some news, and turn off airplane mode to use the cellular connection. ...it decides to download a copy of the entire iMessage conversation I've been in all day, INCLUDING all the videos and images, both sent and received, using hundreds of MB of my data plan. With today's fast LTE this can happen in under a minute with a good connection! Anyone know if there's a way to prevent this? Other than just turning off iMessage on the iPad? It's incredibly wasteful and iOS doesn't make it easy to turn iMessage off and on without having to re-enter the password and get useless notifications on other devices. It'd be nice if iMessage didn't load *videos* at least until you tap on them. EDIT: I should add that this is why I often hesitate to tether my laptop while on a long trip. Everything I did on iMessage will download to the laptop, wasting a ton of data. With three devices that means everything you do uses 3x the data, including downloading what you send on the other two devices. Argh!