Best Sim Cards Pay As You Go Unlimited Data of 2025
Last updated on 21/09/2025
Advertising disclosure
Advertising disclosure
Best Choice
1
Three Unlimited Data SIM - Uncapped 5G - Preloaded MONTHLY Until January 2026 - Plug & Play for Routers & Phones - Access to Three & Vodafone - Connects to the Strongest Signal available
Scancom
9% OffFree Shipping
Show More
Scancom
Three Unlimited Data SIM - Uncapped 5G - Preloaded MONTHLY Until January 2026 - Plug & Play for Routers & Phones - Access to Three & Vodafone - Connects to the Strongest Signal available
9% OffFree Shipping
Why we love it
- Unlimited data until 2026.
- Effortless plug and play setup.
- Compatible with various devices.
Main Highlights
- DUAL NETWORK - Automatic access to both Three & Vodafone networks. Disclaimer - Coverage provided via MOCN, a multi-operator core network, in selected geographical areas. Please check coverage availability before purchase.
- MONTHLY DATA RENEWAL - Unlimited Data until 8th January 2026 for a one-off payment.
- EFFORTLESS PLUG & PLAY – Enjoy seamless 4G and 5G connectivity with no initial setup required.
- UNIVERSAL DEVICE COMPATIBILITY - Optimised for Smartphones, Tablets, Laptops, Mobile Wi-Fi Dongles, Routers, IoT Devices, Smart Meters, Vehicles, Drones, GPS Trackers, Smart Home Devices & Security Cameras.
- DEDICATED SUPPORT - Gain peace of mind with our dedicated business customer support, ready to assist you whenever needed. Please reach us at support@scancom.co.uk with the sim number and order reference.
- VERSATILE TRIPLE CUT SIM - Our all-in-one sim card fits any Standard, Micro, and Nano size device.
- EXCLUSIVE UK DATA-ONLY - This Sim card does not support calls, texts, or roaming. There is a fair use policy of 1000GB per month.
- Sims cannot be ported/transferred, promotions are non-renewable, and support for pre-registered sims is available exclusively via email.
- This item is tailored for business customers. If your order is not in the name of company / non-profit registered at companies house or an Amazon business customer, by purchasing, you affirm your status as a self-employed individual.
Show More
Value for Money
2
EE PAYG SIM card preloaded with 120GB of Data
EE
Free Shipping
Show More
EE
EE PAYG SIM card preloaded with 120GB of Data
Free Shipping
Why we love it
- Generous 120GB data included.
- Valid for a year from activation.
- No contracts, no commitments.
Main Highlights
- 120GB of Data Included
- Lasts up to 12 months from activation
- No contract, no commitment. You can top-up to buy more data
- The EE PAYG 120GB data SIM is compatible with the all unlocked devices or those that are locked to the EE network
- SIM Card - Standard, Micro, and Nano SIM all-in-one with 120GB of data
Show More
3
EE PAYG MBB 120GB 12 Months SIM (EE PAYG MBB 120GB 12 Months SIM)
EE
Free Shipping
Show More
EE
EE PAYG MBB 120GB 12 Months SIM (EE PAYG MBB 120GB 12 Months SIM)
Free Shipping
Why we love it
- Generous 120GB data upon activation.
- Zero contracts attached.
- Comes in all SIM sizes.
Main Highlights
- 120GB of Data Included
- Lasts up to 12 months from activation
- No contract, no commitment. You can top-up to buy more data
- The EE PAYG 120GB data SIM is compatible with the all unlocked devices or those that are locked to the EE network
- SIM Card - Standard, Micro, and Nano SIM all-in-one with 120GB of data
Show More
4
SimRush EE Unlimited Data SIM Card Preloaded for 30 Days. Prepaid, not Pay as You go or a Contract. Comes with Unlimited Data. All on the UK's biggest 5G and 4G Network.
SimRush
Show More
SimRush
SimRush EE Unlimited Data SIM Card Preloaded for 30 Days. Prepaid, not Pay as You go or a Contract. Comes with Unlimited Data. All on the UK's biggest 5G and 4G Network.
Why we love it
- Unlimited data for versatility.
- Preloaded, stress-free operation.
- Uncapped speedy downloads.
Main Highlights
- Unlimited Data in the UK. Perfect for your mobile phone, iPad or a mobile office. The SIM is compatible with any unlocked phone or mobile travel router with a SIM card slot, including in a 4g router or 5g modem.
- No Stress! Preloaded for 30 days of use, not Pay As You Go. No Hidden Charges & No Contract. Optional Renewal Available. Activated 48hrs after SIM despatch.
- Uncapped Download Speeds on The UK's biggest Network. Perfect for a Portable Wifi device, 4 & 5G hotspot, the 5GEE router, as well an unlocked cell, smartphone or any other cellular or mobile hotspot device.
- Packaged for all sizes free of charge: This SIM is suitable for Standard, Micro, Nano sizes, no need for a SIM card adapter
Show More
5
O2 Data Sim Card Preloaded with UNLIMITED 4G/5G Data. Includes 25GB to Roam for Free in 47 Countries. No Contracts, No Commitments, No Credit Checks, No Tie-ins, No Personal ID. (Valid for 1 Month).
Sims4Travel
Free Shipping
Show More
Sims4Travel
O2 Data Sim Card Preloaded with UNLIMITED 4G/5G Data. Includes 25GB to Roam for Free in 47 Countries. No Contracts, No Commitments, No Credit Checks, No Tie-ins, No Personal ID. (Valid for 1 Month).
Free Shipping
Why we love it
- Unlimited 4G/5G data preloaded.
- No contracts or commitments.
- Supports free international roaming.
Main Highlights
- PRELOADED DATA: O2 SIM Card Preloaded with UNLIMITED 4G/5G Data. Enjoy Super-Fast 4G/5G Data Speeds with the UK’s most reliable network. The Data Sim Bundle lasts for 1 month from first use. Easy to renew your bundle for longer
- NO CONTRACTS: The Preloaded O2 Data SIM Card is simple to activate. There are No Contracts, No Commitments, No Credit Checks, No Tie-ins & No Personal ID required
- FREE ROAMING: Includes 25GB of Data which can be used to Roam for Free in any of the 47 countries listed in the description below. So whether you are on Holiday, a Business Trip or Working from Home, you can count on the Preloaded O2 4G/5G Data SIM for reliable & super-fast internet
- MULTIPLE USES: The Sim comes in a Triple-Sized format, meaning it is suitable for use with all O2 or Unlocked Mobile Wi-Fi devices, Routers, Tablets, iPads, Dongles, Laptops, Mobile Phones, CCTV & Alarm systems. Tethering & Mobile Hotspots are also supported
- SPEED YOU WILL LOVE: Working from Home, Streaming Online, Gaming, Scrolling through Social Media - The O2 4G/5G Preloaded SIM card provides amazing performance without any speed restrictions
Show More
6
Three Mobile Pay As You Go Mobile Broadband 24 GB data SIM
3
Free Shipping
Show More
3
Three Mobile Pay As You Go Mobile Broadband 24 GB data SIM
Free Shipping
Why we love it
- 24GB data lasting 24 months.
- 5G access at no cost.
- Compatible with any unlocked device.
Main Highlights
- Pre-loaded with 24GB of data that lasts up to 24 months.
- Access to our 5G network – at no extra cost.
- Use data in 71 destinations – up to 12GB
- SIM fits any unlocked 3G, 4G and 5G device.
Show More
7
Three by Three Mobile Data Pay As You Go SIM, Unlimited
3 MOBILE
6% Off
Show More
3 MOBILE
Three by Three Mobile Data Pay As You Go SIM, Unlimited
6% Off
Why we love it
- Offers unlimited data, texts, minutes.
- Ensures connectivity during travels.
- Compatible with any unlocked phone.
Main Highlights
- Included components: SIM Card. Wireless communication technology: Cellular.
Show More
8
EE PAYG £10 Data Sim Includes £10 pre-paid credit, 8GB Data, 500 Minutes and Unlimited Texts (EE £10-20GB)
EE
Free Shipping
Show More
EE
EE PAYG £10 Data Sim Includes £10 pre-paid credit, 8GB Data, 500 Minutes and Unlimited Texts (EE £10-20GB)
Free Shipping
Why we love it
- Generous data and call allowances.
- Attractive bonus on multiple purchases.
- Fast 4G cellular technology.
Main Highlights
- 20GB Data included, lasts up to 30 days
- The packaging you receive may differ from the image displayed but the data you receive will be as detailed above
- Roaming is not included
- Free Boost - Buy 2 packs and get 2GB free
- 500 minutes and unlimited texts
- If the purchased pre-paid credit is not immediately available when the sim is put into the device, please message us and include the mobile number as detailed on the back of the packaging.
- To view EE’s pay as you go pre-service information, visit ee.co.uk/paygservice. Please read before placing your order. You can download or save the document from your browser
Show More
9
Three 500GB Data SIM - Uncapped 5G - Preloaded MONTHLY Until October 2025 - Plug & Play for Routers & Phones - Access to Three & Vodafone - Connects to the Strongest Signal available
Scancom
46% OffFree Shipping
Show More
Scancom
Three 500GB Data SIM - Uncapped 5G - Preloaded MONTHLY Until October 2025 - Plug & Play for Routers & Phones - Access to Three & Vodafone - Connects to the Strongest Signal available
46% OffFree Shipping
Why we love it
- 500GB monthly data renewal.
- Effortless plug & play.
- Zero contracts or fees.
Main Highlights
- DUAL NETWORK - Automatic access to both Three & Vodafone networks. Disclaimer - Coverage provided via MOCN, a multi-operator core network, in selected geographical areas. Please check coverage availability before purchase.
- MONTHLY DATA RENEWAL - 500GB Data monthly until 8th October 2025 for a one-off payment.
- EFFORTLESS PLUG & PLAY – Enjoy seamless 4G and 5G connectivity with no initial setup required.
- UNIVERSAL DEVICE COMPATIBILITY - Optimised for Smartphones, Tablets, Laptops, Mobile Wi-Fi Dongles, Routers, IoT Devices, Smart Meters, Vehicles, Drones, GPS Trackers, Smart Home Devices & Security Cameras.
- DEDICATED SUPPORT - Gain peace of mind with our dedicated business customer support, ready to assist you whenever needed. Please reach us at support@scancom.co.uk with the sim number and order reference.
- ZERO CONTRACTS - Benefit from our data services without the burden of contracts or recurring fees.
- VERSATILE TRIPLE CUT SIM - Our all-in-one sim card fits any Standard, Micro, and Nano size device.
- EXCLUSIVE UK DATA-ONLY - This Sim card does not support calls, texts, or roaming.
- Sims cannot be ported/transferred, promotions are non-renewable, and support for pre-registered sims is available exclusively via email.
- This item is tailored for business customers. If your order is not in the name of company / non profit registered at companies house or an Amazon business customer, by purchasing, you affirm your status as a self-employed individual.
Show More
10
Lebara SIM Card, Unlimted Data SIM for £12.50, Half Price for First 3 Months, No Contract, UK Calls, UK Texts and International Calls Included, Multi-size, Fits All Devices
Lebara
Free Shipping
Show More
Lebara
Lebara SIM Card, Unlimted Data SIM for £12.50, Half Price for First 3 Months, No Contract, UK Calls, UK Texts and International Calls Included, Multi-size, Fits All Devices
Free Shipping
Why we love it
- Huge savings for three months.
- Convenient pre-loaded plan available.
- Flexibility to change anytime.
Main Highlights
- Register to activate your promotion.
- Plan is Pre-loaded and ready to use.
- 30-day rolling plan. No contract. Change or cancel anytime.
- Keep your existing number.
- EU and India roaming included.
Show More