Ive been with vodafone for 7 years but over time the reception at my house has become worse. I am now at the stage where phone calls break up constantly and I have to walk down the street to get text messages. I understand that since the introduction of 4G there is some kind of bubble of no reception where I live.

I want to try out Spark to see if it is any better but everyone I know is on vodafone. Is there a way to buy a spark sim that doesnt have a prepaid 'package' plan associated to it so I can just try it for a few days? The website isnt clear on how to do this (Or Im just being dumb)