Online Since 1999 Site Secure

Filter Deals



Monthly Cost

Showing 1 - 4 of 4 results
Sort By
4 GBdata


a month
1 Month Plan
12 GBdata


a month
1 Month Plan
25 GBdata


a month
1 Month Plan


a month
1 Month Plan
Close Icon

Sort Deals

A 30-day SIM Only deal is a SIM Only plan that lasts just 30 days. So like all SIM Only plans, you don’t get a new smartphone as part of the deal – this is purely a SIM card and allowances. But being just 30 days long, it’s also super flexible, allowing you to change or cancel your plan at almost any time you want.

Why choose a 30-day rolling SIM Only deal?

More Flexible 

As 30-day SIM Only plans are just 1-month rolling contracts, you have ultimate flexibility. You’re not locked into a long-term contract, so if a better deal ever comes along, you’ll be free to take it.

Save Money

While 30-day SIM Only plans aren’t typically as cheap per month as longer-term SIM Only plans, they’re a lot cheaper than getting a new phone on contract. So if you’re happy with your current handset they’re a great way to save some money.

Easier Credit Checks

SIM Only plans in general and 30-day SIM Only plans in particular also tend to have much easier credit checks than buying a phone on contract, so they’re ideal for anyone who doesn’t have a good credit rating.

Why choose Three for SIM Only?

Three has a lot going for it, no matter what plan type you choose. For one thing, it’s excellent value, with its plans often costing less than the other major networks.

Three also offers 30-day SIM Only plans with unlimited data, so you don’t have to worry about running out – though you can get a plan with limited data for a lower price if you’d prefer.

Plus, it has all the basics you’d expect, like inclusive tethering. There’s even a Three+ Rewards app, packed full of freebies, offers and discounts for Three customers.

Keep your existing number

Keeping your number when signing up for a 30-day SIM Only plan on Three is a breeze. Check out our full guide to keeping your number for a step-by-step guide to doing so.

Are unlimited data 30-day SIM plans available on Three?

Yes, you can get unlimited data on a 30-day SIM Only plan with Three. Choose one of these and you’ll never have to worry about running out of data again.

Can I get a 30-day data-only SIM?

Yes, you can get a 30-day data-only SIM plan with Three. These are like standard SIM Only plans, but they don’t come with an allowance of minutes or texts – just data. That makes them ideal for use with tablets and mobile broadband devices.

close modal icon

Current Offers

Exclusive SIM deals

Exclusive phone and broadband deals


Be the first to hear about the latest devices and get news of breaking deals before anyone else.