I find it really hard to believe that the anachronisms of the Wizarding World would be allowed to persist this far in to the 21st century. Some Muggle-born kid will either find a way to make tech compatible with magic or develop the magic version of the internet and the iphone and everything else.

I think that kind of stuff is so cool that any eleven year old raised in a world where they can find out anything they want to know in less than a second on their phone is going to find the wizarding world a huge downgrade.