Is your mobile phone using your work's WiFi? Or is it using your carrier's data network?
If using your carrier's data network, it likely isn't blocking or filtering anything. I assume your work computer is attached to your corporate network, so likely RS is being filtered for key words. Like in this thread, Badhobz suggested sex tourism, djstyles basically suggesting he engages in sex tourism (specifically in South East Asia) and whitev70r suggesting I am a racist etc. Umm. Yeah. Good luck getting that unrestricted.