So when I send someone a picture/video through messaging and they reply, there is a download button. When i touch that it says "downloading" for about 1 second and then a message pops up saying "Download of message Re: New Message from *friend's name* was unsuccessful." I have wi-fi and cell service so I don't know why it won't download. I'm assuming they are replying with text but either way nothing is downloading. Please help me!