Best business SIM-only deals

In this guide, we take a look at the very best SIM-only deals for business. We find the best contracts that offer a SIM for your existing device whilst delivering all of the calls, data, and features that you need.

In 2023, many companies no longer supply handsets for their employees, instead, they offer a SIM to put into existing devices. This saves money and offers flexibility as you aren’t paying for a smartphone on the contract too.

So, if you are looking to supply SIM-only contracts for your employees, then you’ve come to the right place. We are going to look at the very best SIM-only deals from EE, Three, O2, and Vodafone.

Three – Best value for money

If you’re looking for a great deal for a low price, Three has you covered. If you go for the 24-month Unlimited plan it’s a steal at £17 per month. With that, you’ll receive unlimited texts, unlimited minutes, and unlimited data. You’ll also benefit from personal hotspot support, allowing you to use your phone to provide internet to other devices if there isn’t any Wi-Fi available.

This Three SIM-only contract also includes 5G at no extra cost, and roaming (with up to 12GB of data) in 71 destinations (at a cost of £2+ per day), covering Europe and beyond, so if your work takes you abroad it’s a strong choice.

Plus, as well as the price being competitive, Three will beat deals offered by EE, Vodafone and O2 by at least £1 a month with its Price Promise.

EE – Best for perks

EE’s SIM-only business plans aren’t the cheapest, but they are packed full of features.

Take the 24-month, unlimited data Business Full Works plan, which – you guessed it – has unlimited data, but also unlimited minutes and texts, 5G, an annual device check-up, and three inclusive extras.

Those inclusive extras include a choice of an Apple Music subscription, a Microsoft 365 Personal subscription, 500 minutes to call Europe with, the ability to roam abroad in most of Europe along with seven other global destinations, and a BT Sport Ultimate subscription. So you can choose any three of those.

There’s also a very similar plan which instead comes with Apple One (including subscriptions to Apple Music, Apple TV Plus, Apple Arcade, and 50GB of iCloud storage), plus a choice of one of the above inclusive extras.

In other words, either version of this plan is jam-packed with features, and even EE’s cheaper plans have some of these perks.

O2 – Best for international calls

O2 offers a very impressive 5G SIM-only contract for those who often need to make calls/texts between countries. With its 50GB 12-month plan, unlimited minutes and texts are not just for the UK but include calling and texting Europe from the UK too (albeit capped at 500 of each for that). If you are often calling Europe for work, this contract really is a no-brainer.

Plus, this plan comes with free access to O2’s Wi-Fi hotspots, data rollover, and access to offers and discounts through O2 Priority.

You do get slightly less data for more money than some other deals on this list, but the Europe benefits do make up for this, it all just depends on what you need more. The key thing to keep in mind when selecting one of these SIM-only contracts is exactly what will suit you, your business, and employees best. Is data, price, or international minutes more important?

Vodafone – Best for travel

If you are constantly running out of data, Vodafone has one of the best SIM-only contracts for you. The plan offers unlimited 5G data along with unlimited calls and texts. You won’t have to worry about data allowances while streaming music, movies or answering emails. It’s ideal for being on-the-go when you might not have access to Wi-Fi, for example, when travelling.

Global roaming is also included in the contract with 83 roaming locations offered at no extra cost. That makes this an excellent choice if your business is global. The plan also comes with unlimited picture messages, device care, which includes device health checks and a valuation, and access to Vodafone’s VeryMe Rewards app, packed with exclusive offers from other brands.

Vodafone offers a strong all-round contract that covers practically all bases. It's more expensive than some of our selections, but with everything that's included it's a very attractive offer. 

*note that all prices exclude VAT