Not just the cameras but the ability to send the image. I remember sending an MMS and not really being guaranteed the receiver would get the image. Perhaps they didn't have MMS enabled, or have a device able to receive images, or they didn't have a large enough phone plan to send/receive MMS's.
Now days, sending an image is just part of the furniture.
A part of me would like to rewind and see what the world was like without social media.