Moving into an apartment for a few months which has no fibre/VDSL, Vodafone will allow me to use an existing modem and will sell me a sim card for 4G internet without having to purchase a new $250 modem. Skinny does something similar but I have to transfer a previous account to my name. Doesn't make financial sense to sign up for a 12 month contract or to buy a $250 modem for a few months use.
Many thanks.