Mozillion SIM only deals

Mozillion runs as a low-cost mobile virtual network, so it piggybacks on an established network's masts rather than building its own. That means lower overheads, which are passed on as keenly priced SIM only plans.

To get the cheapest result, compare the cost per GB across its 30-day, 12-month and 24-month tariffs — a longer contract often shaves a little off the monthly price.

A rolling 30-day SIM gives you the freedom to leave or switch whenever you like, which is handy if you want to chase the next cheap deal.

If you're happy to commit, a 12 or 24-month Mozillion plan usually carries a slightly lower monthly price, so weigh the small saving against the loss of flexibility.