Photo bucket is not mobile friendly. I keep my devices up to date and all. I work in IT, pretty sure I got that down.
But photobucket has massive amounts of ads, popups that it causes mobile browsers to hiccup. I prefer imgur because it links directly to the original in an unmodified form, just like how photo bucket used to work. Or of course, this forum.
I used to use photobuclet for TEN years. I gave up.