DNS can be changed with apps like "Set DNS" and with the `setprop` command, however all fail on KitKat to modify resolvers ONLY IN CASE they were set by the mobile carrier.

An simple solutions was given at:
https://android.stackexchange.com/questions/62081/how-to-change-mobile-connectionss-dns-on-android-kitkat
(in brief: put imgur's IP's in `/etc/hosts`)

It will work, but myself, I'm still hunting a way to modify the carrier's resolvers.