Unleash Your Data Usage with Unlimited SIM Only Deals: Compare Now!

Using Savely is an excellent way to compare unlimited SIM only deals and find the best value for your money. With so many providers offering unlimited data plans, it can be overwhelming to try and find the right deal. Savely makes it easy to compare different plans side by side, allowing you to see the features, data allowances, and costs of each deal in one place. By using our website, you can quickly identify the best deal for your needs, whether you're looking for a low-cost option or a premium plan with additional benefits.

Monthly Cost

  • Up to £10
  • Up to £20
  • Up to £30
  • Up to £40

Contract Length

  • Rolling
  • 12 Months
  • 24 Months
  • 36 Months


  • 1GB +
  • 2GB +
  • 3GB +
  • 4GB +
  • 5GB +
  • 10GB +
  • 20GB +
  • Unlimited


  • Vodafone
  • Three
  • O2
  • Virgin
  • GiffGaff

Upfront Cost

  • £0
  • Up to £50
  • Up to £100
  • Up to £150
  • Up to £200


  • 300 +
  • 600 +
  • 900 +
  • Unlimited

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What Unlimited Data SIMs are and how they work:

Unlimited data sim cards work like regular SIMs but offer unlimited data usage. They operate like all SIMs, so you'll get the same coverage and speed as any other SIM. They are perfect for people not looking to buy a new handset but happy to stick with an already-owned device.

Advantages of choosing an Unlimited Data SIM-only deal:

One of the main advantages of Unlimited Data SIMs is using mobile data without worrying that you will ever run out of it. You can stream movies, watch youtube videos and browse social media at any time and anywhere you would like. This is especially important for people who use a lot of data each month, whether for work or leisure. With other SIMs, you might be given a certain amount of data each month, but once you use it up, using the internet will incur extra charges.

Moreover, an Unlimited Data SIM can eliminate the stress of monitoring your data usage each month and adjusting accordingly, saving you time and making your monthly payments consistent.

How Unlimited Data SIM compares to other deals:

Many mobile deals are available on the market, ranging from Pay-As-You-Go plans to contracts with a fixed limit of minutes, texts and data. These can be good for people who know they will not exceed a set amount of monthly data or use the phones mainly for calls and texting, with only occasional internet usage.

One of the advantages of plans with limited data is that they are often cheaper than unlimited data plans; therefore, we recommend taking an overview of your usage and shopping around for the deal that best suits your needs.

Who will benefit the most from Unlimited Data SIM:

Unlimited data SIMs are perfect for people who use their devices frequently for streaming, internet browsing, downloading large files, gaming and other data-intensive activities when they do not have wifi access. These plans are ideal for people who use their phones as a primary means of internet access, such as those that live in an area with limited wifi or who travel frequently.

You might benefit from an unlimited data SIM if you regularly use your mobile phone to share your data via its hotspot feature because this can consume large amounts of data.

Things to keep in mind when getting unlimited SIM:

Price. One of the main downsides of unlimited data SIMs is that they can be more expensive than plans with a fixed data allowance.

Slower speeds at certain times. Unlimited data plans may have certain restrictions, such as lower data speeds after a certain amount of usage or if a network is experiencing heavy use. Therefore, if you rely on your phone for high-bandwidth activities like gaming, you may notice a decrease in performance at certain times. This is known as data throttling, and it's done to manage network congestion and ensure that all users have access to the network.

Certain restrictions. Some SIMs with unlimited data may have certain restrictions on how their data can be used. For example, some carriers restrict using your phone as a hotspot to share data with other devices.

Tips for choosing an Unlimited Data SIM:

Shop around. Before choosing an unlimited data SIM, take your time and research your options. You can use comparison sites like Savely to compare deals and customise your search to find a deal that fits your needs.

Minutes and texts. Consider minute and text allowances, as you will pay extra if you exceed these limits.

Consider perks and free gifts. Some providers offer you more than unlimited data, like international roaming or the ability to browse certain services without using data, such as social media. We recommend considering if you would benefit from these perks and comparing the prices with the deals that do not have these extras.

Read the fine print before signing up for an unlimited data plan. Look for any restrictions, such as tethering limitations, and ensure you understand the carrier's data usage and throttling policies.

Consider your circumstances. It might be beneficial to look at your current data usage and see if it's consistent or different every month. If there isn't a month where you don't go over a specific limit, you might benefit from a limited data plan more. Also, if you travel a lot or are a gamer, you should get a plan that will benefit that, for example, a tariff that includes international roaming or doesn't throttle the network.

Contract length. Consider if the unlimited data sim comes with a contractual obligation. You can get a 30 days contract, but remember that the shorter the contract is, the more expensive it will be than signing up for a more extended period.