T-Mobile UK Web 'n' Walk HSDPA 3G BROADBAND data SIMCARD

[raywright1]

Originally Posted by inquisitor

I have an unregistered but active ... SIM card

can you explain what it means to be active but unregistered? i'm new to the prepaid world but plan to accumulate a few local cards on my trip and keep them for future use. still not clear on all the finer points.

also related - i remember reading a post somewhere in which the poster was asking a local resident to top up for him. is it not possible to top up over the internet (which i guess implies having some sort of prepaid "account" with the vendor)? EDIT: i found an answer to this latter question in this thread thanks.