- Home
- SIM-Only Deals
- Unlimited
Unlimited Texts, Calls & Data SIM-Only Deals
At Optimo Deals, we compare unlimited data, calls, and text SIM-only deals to help you find the perfect mobile subscription plan. Our comparison table highlights the best options for unlimited mobile plans, so you can enjoy all-you-can-use data, unlimited talk and text, and no data caps. Whether you’re looking for high-speed 4G/5G unlimited plans, flexible pay monthly plans, or no-contract unlimited plans, we bring you the best mobile plan deals. With options covering unlimited usage plans and unlimited everything deals, you can stay connected without worrying about limits.
We aim to make it easy for you to choose mobile phone contracts that meet your needs. Our comparisons include SIM-only unlimited plans with unlimited minutes, unlimited texting, and unlimited internet access, ensuring you get the most value. We also consider mobile network coverage to make sure you have reliable data without limits wherever you go. View the comparison table for unlimited data, calls, and text SIM-only contracts below to find the right plan for you.
Editor's Top Pick Uncapped SIM-Only Deals

Vodafone SIM-Only
£20 Per Month
Unlimited Calls
Unlimited Texts

O2 SIM-Only
£10 Per Month
1,000 Minute Calls
Unlimited Texts

Three SIM-Only
£8 Per Month
Unlimited Calls
Unlimited Texts

Vodafone SIM-Only
£24 Per Month
Unlimited Calls
Unlimited Texts
Compare Best SIM-Only Contracts with Unlimited Data, Calls and Texts
| Network | Contract Length | Talktime Minutes | Text Message | Data Allowance | Monthly Price | |
|---|---|---|---|---|---|---|
| 30-Day Rolling | Unlimited UK Minutes | Unlimited Texts | Unlimited 5G Data | £48.00 | |
| 12 Month Contract | Unlimited UK Minutes | Unlimited Texts | Unlimited 5G Data | £38.00 | |
| 24 Month Contract | Unlimited UK Minutes | Unlimited Texts | Unlimited 5G Data | £36.00 | |
| 12 Month Contract | Unlimited UK Minutes | Unlimited Texts | Unlimited Data | £48.00 | |
| 12 Month Contract | Unlimited UK Minutes | Unlimited Texts | Unlimited Data | £46.49 | |
| 24 Month Contract | Unlimited UK Minutes | Unlimited Texts | Unlimited Data | £46.00 | |
| 30-Day Rolling | Unlimited UK Minutes | Unlimited Texts | Unlimited Data | £45.00 | |
| 12 Month Contract | Unlimited UK Minutes | Unlimited Texts | Unlimited Data | £45.00 | |
| 12 Month Contract | Unlimited UK Minutes | Unlimited Texts | Unlimited Data | £45.00 | |
| 24 Month Contract | Unlimited UK Minutes | Unlimited Texts | Unlimited Data | £43.00 | |
| 30-Day Rolling | Unlimited UK Minutes | Unlimited Texts | Unlimited Data | £42.00 | |
| 12 Month Contract | Unlimited UK Minutes | Unlimited Texts | Unlimited Data | £42.00 | |
| 12 Month Contract | Unlimited UK Minutes | Unlimited Texts | Unlimited Data | £42.00 | |
| 12 Month Contract | Unlimited UK Minutes | Unlimited Texts | Unlimited Data | £40.00 | |
| 12 Month Contract | Unlimited UK Minutes | Unlimited Texts | Unlimited Data | £39.00 | |
| 30-Day Rolling | Unlimited UK Minutes | Unlimited Texts | Unlimited Data | £36.00 | |
| 30-Day Rolling | Unlimited UK Minutes | Unlimited Texts | Unlimited Data | £35.00 | |
| 12 Month Contract | Unlimited UK Minutes | Unlimited Texts | Unlimited Data | £35.00 | |
| 12 Month Contract | Unlimited UK Minutes | Unlimited Texts | Unlimited Data | £34.99 | |
| 12 Month Contract | Unlimited UK Minutes | Unlimited Texts | Unlimited Data | £33.00 | |
| 24 Month Contract | Unlimited UK Minutes | Unlimited Texts | Unlimited Data | £32.99 | |
| 12 Month Contract | Unlimited UK Minutes | Unlimited Texts | Unlimited Data | £32.00 | |
| 12 Month Contract | Unlimited UK Minutes | Unlimited Texts | Unlimited Data | £32.00 | |
| 24 Month Contract | Unlimited UK Minutes | Unlimited Texts | Unlimited Data | £31.00 | |
| 12 Month Contract | Unlimited UK Minutes | Unlimited Texts | Unlimited Data | £30.00 | |
| 12 Month Contract | Unlimited UK Minutes, Unlimited International | Unlimited Texts | Unlimited Data | £27.00 | |
| 18 Month Contract | Unlimited UK Minutes | Unlimited Texts | Unlimited Data | £25.00 | |
| 24 Month Contract | Unlimited UK Minutes | Unlimited Texts | Unlimited Data | £25.00 | |
| 30-Day Rolling | Unlimited UK Minutes | Unlimited Texts | Unlimited Data | £25.00 | |
| 12 Month Contract | Unlimited UK Minutes | Unlimited Texts | Unlimited Superfast (150 Mbps) Data | £24.00 | |
| 24 Month Contract | Unlimited UK Minutes | Unlimited Texts | Uncapped speed Data | £24.00 | |
| 24 Month Contract | Unlimited UK Minutes | Unlimited Texts | Uncapped speed Data | £24.00 | |
| 24 Month Contract | Unlimited UK Minutes | Unlimited Texts | Unlimited Superfast (150 Mbps) Data | £23.00 | |
| 12 Month Contract | Unlimited UK Minutes, 100 International Minutes | Unlimited Texts | Unlimited Data | £22.50 | |
| 24 Month Contract | Unlimited UK Minutes | Unlimited Texts | Unlimited Data | £22.24 | |
| 12 Month Contract | Unlimited UK Minutes | Unlimited Texts | Unlimited (10 Mbps) Data | £22.00 | |
| 30-Day Rolling | Unlimited UK Minutes | Unlimited Texts | Unlimited Data | £22.00 | |
| 24 Month Contract | Unlimited UK Minutes | Unlimited Texts | Unlimited (10 Mbps) Data | £21.00 | |
| 24 Month Contract | Unlimited UK Minutes | Unlimited Texts | Uncapped speed Data | £21.00 | |
| 24 Month Contract | Unlimited UK Minutes | Unlimited Texts | Uncapped speed Data | £21.00 | |
| 30-Day Rolling | Not included | Not included | Unlimited Data | £20.00 | |
| 30-Day Rolling | Unlimited UK Minutes | Unlimited Texts | Unlimited Data | £20.00 | |
| 12 Month Contract | Unlimited UK Minutes | Unlimited Texts | Unlimited Value (2 Mbps) Data | £20.00 | |
| 24 Month Contract | Unlimited UK Minutes | Unlimited Texts | Unlimited Data | £20.00 | |
| 24 Month Contract | Unlimited UK Minutes | Unlimited Texts | Unlimited Value (2 Mbps) Data | £19.00 | |
| 12 Month Contract | Unlimited UK Minutes | Unlimited Texts | Unlimited Data | £18.00 | |
| 24 Month Contract | Unlimited UK Minutes | Unlimited Texts | Unlimited Data | £16.00 | |
| 24 Month Contract | Unlimited UK Minutes | Unlimited Texts | Unlimited Data | £15.00 |
Choosing The Right Unlimited Data SIM-Only Deal
For those seeking an affordable unlimited data, calls, and text SIM-only deal, BT offers a standout choice with a 24-month contract at just £15 per month. This deal provides unlimited UK minutes, texts, and data, making it an ideal low-cost option for budget-conscious users who still want unlimited internet access. If you prefer short-term flexibility, SMARTY’s 30-day rolling plan is available for £20 and also includes unlimited everything. Both plans offer great value without compromising on data or call limits.
If you’re looking for a mid-range option, consider Lebara’s 12-month contract at £27 per month. It not only includes unlimited UK minutes, texts, and data, but also comes with unlimited international minutes, making it perfect for frequent callers abroad. Another competitive mid-range option is Vodafone’s 12-month contract for £32 per month, providing unlimited 5G data along with UK minutes and texts. These mid-tier choices balance cost and features, delivering high-speed data and extensive network coverage for everyday use.
Network Provider With Best Mobile Data Coverage
When it comes to mobile data coverage in the UK, major network providers like EE, Vodafone, O2, and Three dominate the market, offering extensive coverage across cities and rural areas. In London, all four providers deliver strong 4G and 5G coverage, ensuring fast mobile data speeds and reliable connections for browsing, streaming, and gaming. Similarly, in Birmingham and Manchester, users can expect consistent high-speed data availability from these providers, with 5G networks expanding rapidly. For calling and texting, coverage is nearly universal in these large cities, with minimal risk of dropped calls or poor voice quality.
As you move to cities like Glasgow, Edinburgh, and Cardiff, network coverage for mobile data remains solid across the board. EE is often noted for having the most comprehensive coverage in these areas, especially for 5G services. Vodafone and O2 also offer reliable high-speed data access, while Three continues to invest in expanding its 5G network across major cities. In places like Liverpool, Leeds, and Sheffield, all providers maintain competitive network coverage, with strong signals for mobile data, calls, and texts in most urban and suburban areas. Rural coverage is more varied, but improvements in network infrastructure are bridging these gaps.
For cities such as Bradford, Belfast, Nottingham, Brighton, and Leicester, mobile data coverage continues to improve, with most network providers expanding their 4G and 5G networks. While EE and Vodafone are known for superior 5G reach, O2 offers reliable data coverage in urban centers, and Three has been making significant progress in upgrading its network. Users can expect strong calling and texting coverage, especially in densely populated areas. However, those living or traveling to more remote regions may experience some fluctuations in data speeds or network availability, highlighting the importance of choosing a provider with the best local coverage.
UK Network Provider with the Fastest Mobile’s Data Speed
In the UK, network providers are continually improving their infrastructure to offer the fastest mobile data speeds, with EE often cited as the leader due to its extensive 4G and 5G networks. On 4G, users can expect download speeds ranging from 30 to 50 Mbps, which is sufficient for most everyday activities like browsing, social media, and streaming HD videos on platforms such as YouTube or Netflix. The latency, or the delay before data starts transferring, is typically around 30 to 50 milliseconds on 4G, making it suitable for tasks like emailing, WhatsApp messaging, and standard business operations. However, more demanding applications such as high-quality video calls or large file transfers may experience some lag or delays on 4G, especially in peak hours or densely populated areas.
With 5G, the experience is elevated to a whole new level, as download speeds can reach between 150 to 1,000 Mbps, with significantly lower latency (around 10 to 20 milliseconds). This enhanced performance makes 5G ideal for data-intensive tasks like streaming 4K videos, engaging in seamless video calls, or even using cloud-based business applications that require real-time responsiveness. For social media enthusiasts, content uploads and downloads happen almost instantaneously, while gamers benefit from reduced lag during online multiplayer sessions. The higher bandwidth and speed of 5G also support multiple simultaneous connections, which is perfect for users who juggle streaming music, browsing, and video conferencing all at once.
Frequently Asked Questions About Unlimited Texts, Minutes and Data SIM-Only Deals
When choosing the best SIM-only deals for unlimited texts, minutes, and data, there are many factors to consider, from coverage and network speed to contract flexibility and cost. To help you better understand what these plans offer and how they can fit into your mobile lifestyle, we’ve compiled a list of frequently asked questions about unlimited mobile plans. This FAQ section aims to address common concerns about unlimited usage plans, no data caps, and all-you-can-use data options, helping you make an informed decision when comparing mobile plan deals.
What are unlimited mobile plans?
What are unlimited mobile plans?
Unlimited mobile plans are subscription options that provide all-you-can-use data, unlimited talk and text, and no data caps. These plans allow you to use as much data, make unlimited calls, and send unlimited texts without worrying about extra charges, making them ideal for heavy mobile users.
Is there a difference between 4G and 5G unlimited plans?
Is there a difference between 4G and 5G unlimited plans?
Yes, 4G and 5G unlimited plans differ mainly in terms of data speed and latency. While 4G plans offer high-speed data suitable for everyday use like browsing, social media, and HD streaming, 5G plans provide much faster download speeds and lower latency, which is ideal for 4K streaming, online gaming, and other data-intensive tasks.
Do unlimited data plans really have no data caps?
Do unlimited data plans really have no data caps?
Most unlimited data plans do not have data caps, meaning you can use as much data as you need without extra charges. However, some providers may impose fair usage policies that could slow down your speeds after reaching a certain threshold.
Are SIM-only unlimited plans better than mobile phone contracts?
Are SIM-only unlimited plans better than mobile phone contracts?
SIM-only unlimited plans can be more flexible and cost-effective compared to traditional mobile phone contracts. With SIM-only deals, you only pay for the network services (data, calls, texts), giving you the freedom to switch plans or providers more easily. In contrast, mobile phone contracts usually involve long-term commitments with device payments included.
How much does an unlimited everything deal typically cost?
How much does an unlimited everything deal typically cost?
The cost of an unlimited everything deal varies depending on the provider and contract length. Generally, prices range from as low as £15 to over £50 per month. Pay monthly plans often come with different options, including 30-day rolling contracts, 12-month, or 24-month agreements.
Can I get unlimited talk and text with all SIM-only plans?
Can I get unlimited talk and text with all SIM-only plans?
Most SIM-only unlimited plans include unlimited talk and text along with unlimited data. These plans are ideal for users who frequently make calls or send texts, providing a worry-free communication experience without additional charges.
Do unlimited usage plans include mobile network coverage across the UK?
Do unlimited usage plans include mobile network coverage across the UK?
Yes, unlimited usage plans typically include extensive mobile network coverage across the UK. Major providers like EE, Vodafone, O2, and Three offer strong coverage in urban and rural areas, although network quality may vary depending on your location.
Is it possible to get a no-contract unlimited plan?
Is it possible to get a no-contract unlimited plan?
Yes, some providers offer no-contract unlimited plans, usually as 30-day rolling contracts. These plans give you more mobile plan flexibility, allowing you to cancel or switch providers without being tied to a long-term commitment.
Are there pay monthly plans that offer data without limits?
Are there pay monthly plans that offer data without limits?
Yes, many pay monthly plans offer data without limits, providing unlimited internet access for all your browsing, streaming, and downloading needs. These plans can include both 4G and 5G options, depending on your network provider.
Are unlimited data plans suitable for business use?
Are unlimited data plans suitable for business use?
Unlimited data plans are great for business use, especially if your work involves frequent video conferencing, cloud-based applications, or other data-intensive tasks. With unlimited mobile plans, you can maintain a reliable connection without worrying about data overages.
Do all mobile plan deals offer high-speed data?
Do all mobile plan deals offer high-speed data?
Most mobile plan deals offer high-speed data, especially if you’re on a 4G or 5G network. However, speeds may vary depending on your location and the network provider’s coverage. Some providers may also reduce your speed if you exceed a fair usage limit.






