How to get pictures on an iPhone without using data?

My friends try to send me pictures (not the bad ones, get your head out of the gutter), but the only way I can get them with my iPhone is to turn on data.
I hate it.
Is there anyway I could get pictures without turning on my data?
They don't have iPods, iPhones, or any of that. So iMessage is not an option.

If you have unlimited media messaging (or whatever your carrier calls it), they could attach it to a text. For example, I have AT&T with unlimited media messaging. I have to actually have a data plan to use MMS (media messages) but it does not use my data. This could vary between carriers, so I would suggest to google it if you aren't with AT&T.

Otherwise, they could email the image to you, you could check it on your desktop and sync it to your phone through iTunes. That is probably not the option you are looking for, though lol.