At this point I have no idea how well anything will work, my SIM won't become active for a few more days, even though it arrived last week. I have had multiple emails from Mobiles.co.uk but the SIM came from I.D. Mobile - so who am I with?! The cost is 1/3 of what I was paying for a sim-only contract (it would have been gal, but my previous provider just couldn't help raking my eyes on a monthly basis for 1/6 of the data available in this current plan. I've never switched phone providers and kept my number before, so I'll revisit this review when I actually have something to say.