Unfortunately I've been "blessed" with an iPhone (6).
Whenever I'm accessing gamedev.net via mobile connection (does not happen via WLAN) I'm redirected to some weird ad (lp.mobileboostr.com) that pops up, wants a confirmation (javascript alert?) and I cannot access anything at gamedev at all.
The redirection happens after a few seconds, looks like it's going to spaces.slimspots.com which then redirects to lp.mobileboostr.com.
This makes access completely impossible.
It's a company phone so I doubt there's anything funky with the mobile data service.