Hi. Thanks for the reply. I'll give you more info (:
Yep I'm using the new Singtel fibre plan.
1) All connected to my house's optic fibre wifi connected with
the wireless router singtel provided.
Tablet and laptop both connected and can't access some sites
like safra.sg
2) All connected to my house's optic fibre wifi with my laptop's
LAN setting set with proxy server.
Tablet and laptop both connected. Can access sites which I can't
initially but tablet can't access my school's lecture recording
3) Tablet connected to my phone's data connection or any other
wifi network other than my home's
Can access everything normally
4) Laptop connected to my phone's data connection or any other
wifi network other than my home's (with the same singtel proxy
address set in the LAN settings)
Cannot access internet at all.