Pictures are still a huge pain in the ass on mobile connections. Try looking at Facebook or Instagram or Twitter on a flaky 2G connection. Although you don't get to see them stream in line by line like you used to in the good old days - they just take forever to download a muddy blurred version of the actual image first as a placeholder.
Even better when you see what seems like a high rez picture that is sized small and you click to see it better ... oh crap it is starting over downloading again ... and I'm 99% sure the pic was already there before. (granted it may not have been high res but damn it it was close enough)
