We’ve had SIM cards. Then came Micro-SIM cards, and now, there are Nano-SIM cards. By the looks of the last one, it will be a real struggle to come up with something smaller – but if anyone can do it, Apple can!

And if they do manage to find a way to make a SIM card even smaller, the good news is that they’ll only be able to do it another five times. Because that’s how many words there are for things smaller than nano: pico, femto, atto, zepto and yocto. But by the time we get to the end of the list, SIMs probably won’t matter because we will all be telepathically communicating with each other from our flying cars (in space).

The good news for the present is that GO-SIM, in addition to providing all-in-one SIM cards that are both regular and micro-sized (and that can be used both ways), now have Nano-SIMs in stock. If you’re an iPhone 5 user, simply select the option from the purchase path next time you’re on the site.

You can now use your tiny SIM card to make huge savings.