Best Three deals 2023: Get unlimited data SIM-only deals and bargain broadband

We've rounded up the best Three deals for you, allowing you to save on SIM-only contracts and broadband
There are always plenty of Three deals to pick from because the company's in the habit of throwing in phenomenal freebies and dazzling discounts. So, whether you want to keep your phone and sign up for big-data SIM-only plan or are after straightforward broadband, we've put together a bevy of bargains for you.
There are plenty of perks with Three too. It offers the most 5G zones across the UK, which equals supercharged streaming, pixel-perfect gaming and speedy downloads. Switching network providers, while keeping your number, has never been easier and its unlimited data plans come with no caps or limits. Tempting, right?
To save you the trouble of sifting through the numerous deals, we’ve done the maths to bring you Three's jumbo discounts.
READ NEXT: The best broadband deals this month
The best Three deals on broadband this June
1. The best Three deal on broadband overall


Not only is this our pick of the Three deals this month, but it's one of the best broadband offers overall: if you live in a 5G area, you'll be treated to an average download speed of 150Mbits/sec (more than enough for a house crammed with devices) for a mere £20/mth on a two-year contract. And, if that wasn't enough, you'll get the first three months completely free, saving you £60 overall. Phew!
Key details | |
Provider | Three |
Contract length | 24 months |
Monthly price | £20 |
Setup cost | £0 |
Download speed | 150Mbits/sec |
Price per megabit | 13p |
The best Three deals on SIM-only contracts this June
1. The best Three SIM-only deal overall


With this deal, you're getting a massive 120GB of data, unlimited texts and minutes, a personal hotspot and Go Roam Around the World for nothing at all for the first three months of a two-year plan (then £16/mth). It was already good value before Three threw in the free months.
Key details | |
Network | Three |
Contract length | 24 months |
Monthly price | £16 |
Unlimited minutes and texts | Yes |
Data | 120GB |
Price per gigabyte | 13p |
2. The best Three SIM only deal with unlimited data


Big data user? Sign up for Three's unlimited SIM-only tariff to get the first six three months of a two-year contract entirely for free. The price will then rise to £25/mth from the fourth month, meaning you're saving a not-too-shabby £72 overall. That buys you unlimited texts and minutes, 5G internet at no extra cost, a personal hotspot and Go Roam Around the World.
Key details | |
Network | Three |
Contract length | 24 months |
Monthly price | £25 |
Unlimited minutes and texts | Yes |
Data | Unlimited |
Price per gigabyte | Unlimited |
3. The best Three SIM-only deal on a budget


If you're a more modest data consumer and only occasionally stream or play games, this deal gets you 12GB for nothing for the first three months, before rising to £12 for the remainder of the two-year contract. As ever, you're getting unlimited minutes and texts, as well as a personal hotspot and Go Roam Around the World.
Key details | |
Network | Three |
Contract length | 24 months |
Monthly price | £12 |
Unlimited minutes and texts | Yes |
Data | 12GB |
Price per gigabyte | £1 |
So how do we find the best Three deals for you? At Expert Reviews, we put a lot of thought into the offers we recommend and always want to get the most for your money. We've outlined our full deal-hunting strategy in a dedicated article, which you can read by clicking on this link.