Best O2 Sim Card 5g of 2026

Last updated on 01/01/2026
Advertising disclosure
Advertising disclosure
Most Relevant
Most Relevant
Best Discount
Lowest Price
ElectronicsHome & KitchenComputersOffice SuppliesToys & GamesSports & Fitness
Most Relevant
Most Relevant
Best Discount
Lowest Price
Best Choice
1
O2 Unlimited 5G Data SIM - Perfect for unlocked Phones, Routers, Tablets and Wifi Dongles - Activate anytime when you receive the SIM - Choose your Data Duration (6 Months)
thumbnail 1
thumbnail 2
thumbnail 3
thumbnail 4

O2 Unlimited 5G Data SIM - Perfect for unlocked Phones, Routers, Tablets and Wifi Dongles - Activate anytime when you receive the SIM - Choose your Data Duration (6 Months)

Scancom
Why we love it
  • Easy anytime activation process.
  • Renewable data for longer use.
  • Compatible with various devices.
Main Highlights
  • ANYTIME ACTIVATION - Activate your Sim by scanning the supplied QR Code and enjoy 6 months of 4G & 5G data. We will activate your sim within 1 business day.
  • DATA RENEWAL OPTION - Extend your data usage beyond the initial term with the option to renew at the end, ensuring continuous connectivity without interruption.
  • 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 CUSTOMER SUPPORT - For any connection queries, our customer support team at Scancom is ready to assist you. Please contact support@scancom.co.uk
  • 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 - Tailored for data usage with a 600GB/month fair use UK-only data allowance. This Sim card does not support calls, texts, or roaming.
  • *Breach of fair usage policy: Data usage where users regularly tether to 12 or more devices or have used 600GB of data twice within a 6-month period. This includes fraudulent, abusive, illegal, nuisance, or outside normal commercial practice usage.
Show More
9.7
Exceptional
Product image 1
Product image 2
Product image 3
Product image 4
9.7
Exceptional
Scancom

O2 Unlimited 5G Data SIM - Perfect for unlocked Phones, Routers, Tablets and Wifi Dongles - Activate anytime when you receive the SIM - Choose your Data Duration (6 Months)

Why we love it
  • Easy anytime activation process.
  • Renewable data for longer use.
  • Compatible with various devices.
Main Highlights
  • ANYTIME ACTIVATION - Activate your Sim by scanning the supplied QR Code and enjoy 6 months of 4G & 5G data. We will activate your sim within 1 business day.
  • DATA RENEWAL OPTION - Extend your data usage beyond the initial term with the option to renew at the end, ensuring continuous connectivity without interruption.
  • 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 CUSTOMER SUPPORT - For any connection queries, our customer support team at Scancom is ready to assist you. Please contact support@scancom.co.uk
  • 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 - Tailored for data usage with a 600GB/month fair use UK-only data allowance. This Sim card does not support calls, texts, or roaming.
  • *Breach of fair usage policy: Data usage where users regularly tether to 12 or more devices or have used 600GB of data twice within a 6-month period. This includes fraudulent, abusive, illegal, nuisance, or outside normal commercial practice usage.
Show More
Value for Money
2
O2 Unlimited 5G Data SIM. Perfect for unlocked Phones, Routers, Tablets and Wifi Dongles - Activate anytime when you receive the SIM - Choose your Data Duration (2 Months)
thumbnail 1
thumbnail 2
thumbnail 3
thumbnail 4

O2 Unlimited 5G Data SIM. Perfect for unlocked Phones, Routers, Tablets and Wifi Dongles - Activate anytime when you receive the SIM - Choose your Data Duration (2 Months)

Scancom
Why we love it
  • Anytime activation within 1 day.
  • Zero contracts or recurring fees.
  • Universal device compatibility guaranteed.
Main Highlights
  • ANYTIME ACTIVATION - Activate your Sim by scanning the supplied QR Code and enjoy 2 months of 4G & 5G data. We will activate your sim within 1 business day.
  • DATA RENEWAL OPTION - Extend your data usage beyond the initial term with the option to renew at the end, ensuring continuous connectivity without interruption.
  • 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 CUSTOMER SUPPORT - For any connection queries, our customer support team at Scancom is ready to assist you. Please contact support@scancom.co.uk
  • 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 - Tailored for data usage with a 600GB/month fair use UK-only data allowance. This Sim card does not support calls, texts, or roaming.
  • *Breach of fair usage policy: Data usage where users regularly tether to 12 or more devices or have used 600GB of data twice within a 6-month period. This includes fraudulent, abusive, illegal, nuisance, or outside normal commercial practice usage.
Show More
9.7
Exceptional
Product image 1
Product image 2
Product image 3
Product image 4
9.7
Exceptional
Scancom

O2 Unlimited 5G Data SIM. Perfect for unlocked Phones, Routers, Tablets and Wifi Dongles - Activate anytime when you receive the SIM - Choose your Data Duration (2 Months)

Why we love it
  • Anytime activation within 1 day.
  • Zero contracts or recurring fees.
  • Universal device compatibility guaranteed.
Main Highlights
  • ANYTIME ACTIVATION - Activate your Sim by scanning the supplied QR Code and enjoy 2 months of 4G & 5G data. We will activate your sim within 1 business day.
  • DATA RENEWAL OPTION - Extend your data usage beyond the initial term with the option to renew at the end, ensuring continuous connectivity without interruption.
  • 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 CUSTOMER SUPPORT - For any connection queries, our customer support team at Scancom is ready to assist you. Please contact support@scancom.co.uk
  • 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 - Tailored for data usage with a 600GB/month fair use UK-only data allowance. This Sim card does not support calls, texts, or roaming.
  • *Breach of fair usage policy: Data usage where users regularly tether to 12 or more devices or have used 600GB of data twice within a 6-month period. This includes fraudulent, abusive, illegal, nuisance, or outside normal commercial practice usage.
Show More
3
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).
thumbnail 1
thumbnail 2
thumbnail 3
thumbnail 4

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
11% Off
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
9.5
Superb
Product image 1
Product image 2
Product image 3
Product image 4
9.5
Superb
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).

11% Off
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
4
O2 Data Sim Card Preloaded with UNLIMITED 4G/5G Data. No Contracts, No Commitments, No Credit Checks, No Tie-ins, No Personal ID. (Valid for 1 Month)
thumbnail 1
thumbnail 2
thumbnail 3
thumbnail 4

O2 Data Sim Card Preloaded with UNLIMITED 4G/5G Data. No Contracts, No Commitments, No Credit Checks, No Tie-ins, No Personal ID. (Valid for 1 Month)

Sims4Travel
Why we love it
  • Unlimited high-speed data access.
  • No contracts or commitments.
  • Supports all devices seamlessly.
Main Highlights
  • O2 Data Sim Card Preloaded with UNLIMITED 4G/5G Data. No Contracts, No Commitments, No Credit Checks, No Tie-ins, No Personal ID. (Valid for 1 Month)
  • 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.
  • 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 and more. 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 Data SIM provides amazing performance without any speed restrictions.
Show More
9.5
Superb
Product image 1
Product image 2
Product image 3
Product image 4
9.5
Superb
Sims4Travel

O2 Data Sim Card Preloaded with UNLIMITED 4G/5G Data. No Contracts, No Commitments, No Credit Checks, No Tie-ins, No Personal ID. (Valid for 1 Month)

Why we love it
  • Unlimited high-speed data access.
  • No contracts or commitments.
  • Supports all devices seamlessly.
Main Highlights
  • O2 Data Sim Card Preloaded with UNLIMITED 4G/5G Data. No Contracts, No Commitments, No Credit Checks, No Tie-ins, No Personal ID. (Valid for 1 Month)
  • 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.
  • 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 and more. 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 Data SIM provides amazing performance without any speed restrictions.
Show More
5
Wave Connect Quad Network Data Only SIM Card, Three, EE, O2, Vodafone, 4G LTE + 5G Prepaid, Activates On First Use, Includes UK, Ireland, EU, For Unlocked IoT Devices, Cameras (12GB | 12 Months)
thumbnail 1
thumbnail 2
thumbnail 3
thumbnail 4

Wave Connect Quad Network Data Only SIM Card, Three, EE, O2, Vodafone, 4G LTE + 5G Prepaid, Activates On First Use, Includes UK, Ireland, EU, For Unlocked IoT Devices, Cameras (12GB | 12 Months)

Wave Connect
14% Off
Why we love it
  • Versatile 3-in-1 SIM card.
  • Easy online data management.
  • Works with various devices.
Main Highlights
  • THE PLAN: Data only SIM card with 12GB valid for 12 months (not 12GB per month). Refill any time to reset the duration.
  • WHAT’S INCLUDED: A 3-in-1 SIM card with data to use across all major UK networks. The card includes standard/micro/nano sizes. This is data-only, no voice or text.
  • HOW IT WORKS: Insert to use straight away, register online to view data use and top-up.
  • WHY THIS SIM? Enjoy online access to view data consumption, add alerts and notifications when nearing your data allowance, and top-up manually or choose automatic top-ups with different data allowances available.
  • WHO’S THIS FOR? This non-steered SIM card connects to all networks so is great for trail cameras, CCTV, surveillance, security, movement cameras, solar energy monitoring systems and wind turbines - although it will work with most devices.
  • TOP-UP ANYTIME: A choice of options to add more data based on your use. Downgrade or upgrade at any time. Select automatic refill to ensure you’re always connected.
Show More
9.4
Superb
Product image 1
Product image 2
Product image 3
Product image 4
9.4
Superb
Wave Connect

Wave Connect Quad Network Data Only SIM Card, Three, EE, O2, Vodafone, 4G LTE + 5G Prepaid, Activates On First Use, Includes UK, Ireland, EU, For Unlocked IoT Devices, Cameras (12GB | 12 Months)

14% Off
Why we love it
  • Versatile 3-in-1 SIM card.
  • Easy online data management.
  • Works with various devices.
Main Highlights
  • THE PLAN: Data only SIM card with 12GB valid for 12 months (not 12GB per month). Refill any time to reset the duration.
  • WHAT’S INCLUDED: A 3-in-1 SIM card with data to use across all major UK networks. The card includes standard/micro/nano sizes. This is data-only, no voice or text.
  • HOW IT WORKS: Insert to use straight away, register online to view data use and top-up.
  • WHY THIS SIM? Enjoy online access to view data consumption, add alerts and notifications when nearing your data allowance, and top-up manually or choose automatic top-ups with different data allowances available.
  • WHO’S THIS FOR? This non-steered SIM card connects to all networks so is great for trail cameras, CCTV, surveillance, security, movement cameras, solar energy monitoring systems and wind turbines - although it will work with most devices.
  • TOP-UP ANYTIME: A choice of options to add more data based on your use. Downgrade or upgrade at any time. Select automatic refill to ensure you’re always connected.
Show More
6
O2 Sim Card Preloaded with UNLIMITED UK Calls, Texts & 4G/5G Data. (Valid for 30 days). No Contracts, No Commitments, No Credit Checks, No Tie-ins, No Personal ID. Simple to renew
thumbnail 1
thumbnail 2
thumbnail 3
thumbnail 4

O2 Sim Card Preloaded with UNLIMITED UK Calls, Texts & 4G/5G Data. (Valid for 30 days). No Contracts, No Commitments, No Credit Checks, No Tie-ins, No Personal ID. Simple to renew

Sims4Travel
Why we love it
  • Unlimited 4G/5G UK data.
  • No contracts or checks.
  • Keeps your old number.
Main Highlights
  • PRELOADED & PREPAID: Preloaded O2 SIM Card with UNLIMITED UK Calls, Texts & UNLIMITED 4G/5G Data. Enjoy Super-Fast 4G/5G Data Speeds with the UK’s most reliable network. Bundle lasts for 1 month from first use. Easy to renew for longer.
  • NO CONTRACTS: Tired of being locked into a phone contract for 24 months? Or being Credit Checked for no valid reason? Our O2 Sims have No Contracts, No Credit Checks, No Commitments, No Tie-ins & No Personal ID is required.
  • KEEP YOUR NUMBER: Want to bring your existing number over? All you need is a PAC Code from existing network. Your new O2 Sim will then keep your old mobile number.
  • SPEED YOU WILL LOVE: Where other providers have "unlimited" data that's actually being throttled - we don't! Our 4G/5G Preloaded O2 Voice & Data SIM provides 100% Unthrottled & Unrestricted performance at the maximum possible speed directly from the Networks.
  • ACTIVATION: Simple automated online activation process which works 24/7.
Show More
9.3
Superb
Product image 1
Product image 2
Product image 3
Product image 4
9.3
Superb
Sims4Travel

O2 Sim Card Preloaded with UNLIMITED UK Calls, Texts & 4G/5G Data. (Valid for 30 days). No Contracts, No Commitments, No Credit Checks, No Tie-ins, No Personal ID. Simple to renew

Why we love it
  • Unlimited 4G/5G UK data.
  • No contracts or checks.
  • Keeps your old number.
Main Highlights
  • PRELOADED & PREPAID: Preloaded O2 SIM Card with UNLIMITED UK Calls, Texts & UNLIMITED 4G/5G Data. Enjoy Super-Fast 4G/5G Data Speeds with the UK’s most reliable network. Bundle lasts for 1 month from first use. Easy to renew for longer.
  • NO CONTRACTS: Tired of being locked into a phone contract for 24 months? Or being Credit Checked for no valid reason? Our O2 Sims have No Contracts, No Credit Checks, No Commitments, No Tie-ins & No Personal ID is required.
  • KEEP YOUR NUMBER: Want to bring your existing number over? All you need is a PAC Code from existing network. Your new O2 Sim will then keep your old mobile number.
  • SPEED YOU WILL LOVE: Where other providers have "unlimited" data that's actually being throttled - we don't! Our 4G/5G Preloaded O2 Voice & Data SIM provides 100% Unthrottled & Unrestricted performance at the maximum possible speed directly from the Networks.
  • ACTIVATION: Simple automated online activation process which works 24/7.
Show More
7
O2 Prepaid Data Sim Card. 25GB of 4G/5G Data for use in over 70+ Countries Worldwide (Valid for 30 Days).Easy to Renew. Includes USA, Canada, Australia, South Africa & Europe.
thumbnail 1
thumbnail 2
thumbnail 3
thumbnail 4

O2 Prepaid Data Sim Card. 25GB of 4G/5G Data for use in over 70+ Countries Worldwide (Valid for 30 Days).Easy to Renew. Includes USA, Canada, Australia, South Africa & Europe.

Sims4Travel
Why we love it
  • Global coverage in 70+ countries.
  • No roaming fees worries.
  • Outstanding customer service availability.
Main Highlights
  • WHAT YOU GET: A Prepaid/preloaded O2 Sim Card with 25GB of 4G/5G roaming data for use in 70+ countries worldwide. Includes USA, Canada, Australia, South Africa and Europe. See the full country list in the description below.
  • UNLIMITED DATA SPEEDS: this sim comes with 25GB of 4G/5G data, with no speed restrictions. Enjoy super-fast 4G/5G data speeds + free mobile hotspot/tethering + compatible with VOIP services.
  • HOW YOU GET IT: You receive a 3-in-1 Sim card that includes standard/micro/nano sizes. Activate the sim via an emil/call to Sims4Travel then insert the sim into your device. You can activate the sim before you travel or as soon as you arrive at one of the 70+ countries listed below. Either way, your sim is ready to use within an hour of activation.
  • WHO SHOULD GET IT? Anyone who hates roaming fees when travelling. Keep connected with no hidden costs
  • CUSTOMER SERVICE: We care about our customers. We're available 7 days a week to assist you, call, email or video chat. We take pride in your connectivity
  • LEGAL STUFF: Capable device required. No Personal ID required
  • EUROPEAN ROAMING COUNTRIES: Albania, Austria, Belgium, Bulgaria, Canary Islands, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Faroe Islands, Finland, France, French Territories, Germany, Gibraltar, Greece, Hungary, Iceland, Ireland, Italy (including Vatican City), Latvia, Liechtenstein, Lithuania, Luxembourg, Malta, Monaco, Netherlands, Norway, Poland, Portugal (including Madeira), Romania, Slovakia, Slovenia, Spain (including. Balearic Islands), Sweden, Channel Islands (including Guernsey
  • REST OF THE WORLD ROAMING COUNTRIES: Anguilla, Antigua, Aruba, Australia, Barbados, Bermuda, Bosnia & Herzegovina, Canada, Cayman Islands, Dominica, Ghana, Grenada, Jamaica, Kenya, Lesotho, Mexico, Montserrat, Mozambique, Netherland Antilles, New Zealand, South Africa, St Kitts and Nevis, St Vincent, St Lucia, Trinidad & Tobago, Turks and Caicos, UK Virgin Islands, USA.
Show More
9.2
Superb
Product image 1
Product image 2
Product image 3
Product image 4
9.2
Superb
Sims4Travel

O2 Prepaid Data Sim Card. 25GB of 4G/5G Data for use in over 70+ Countries Worldwide (Valid for 30 Days).Easy to Renew. Includes USA, Canada, Australia, South Africa & Europe.

Why we love it
  • Global coverage in 70+ countries.
  • No roaming fees worries.
  • Outstanding customer service availability.
Main Highlights
  • WHAT YOU GET: A Prepaid/preloaded O2 Sim Card with 25GB of 4G/5G roaming data for use in 70+ countries worldwide. Includes USA, Canada, Australia, South Africa and Europe. See the full country list in the description below.
  • UNLIMITED DATA SPEEDS: this sim comes with 25GB of 4G/5G data, with no speed restrictions. Enjoy super-fast 4G/5G data speeds + free mobile hotspot/tethering + compatible with VOIP services.
  • HOW YOU GET IT: You receive a 3-in-1 Sim card that includes standard/micro/nano sizes. Activate the sim via an emil/call to Sims4Travel then insert the sim into your device. You can activate the sim before you travel or as soon as you arrive at one of the 70+ countries listed below. Either way, your sim is ready to use within an hour of activation.
  • WHO SHOULD GET IT? Anyone who hates roaming fees when travelling. Keep connected with no hidden costs
  • CUSTOMER SERVICE: We care about our customers. We're available 7 days a week to assist you, call, email or video chat. We take pride in your connectivity
  • LEGAL STUFF: Capable device required. No Personal ID required
  • EUROPEAN ROAMING COUNTRIES: Albania, Austria, Belgium, Bulgaria, Canary Islands, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Faroe Islands, Finland, France, French Territories, Germany, Gibraltar, Greece, Hungary, Iceland, Ireland, Italy (including Vatican City), Latvia, Liechtenstein, Lithuania, Luxembourg, Malta, Monaco, Netherlands, Norway, Poland, Portugal (including Madeira), Romania, Slovakia, Slovenia, Spain (including. Balearic Islands), Sweden, Channel Islands (including Guernsey
  • REST OF THE WORLD ROAMING COUNTRIES: Anguilla, Antigua, Aruba, Australia, Barbados, Bermuda, Bosnia & Herzegovina, Canada, Cayman Islands, Dominica, Ghana, Grenada, Jamaica, Kenya, Lesotho, Mexico, Montserrat, Mozambique, Netherland Antilles, New Zealand, South Africa, St Kitts and Nevis, St Vincent, St Lucia, Trinidad & Tobago, Turks and Caicos, UK Virgin Islands, USA.
Show More
8
UK Multi-Network Data SIM Card | Automatically Selects the Strongest Network: EE, Three, O2, or Vodafone (5GB - 12 Months)
thumbnail 1
thumbnail 2
thumbnail 3
thumbnail 4

UK Multi-Network Data SIM Card | Automatically Selects the Strongest Network: EE, Three, O2, or Vodafone (5GB - 12 Months)

GraspLet
Why we love it
  • Effortless network switching technology.
  • Easy plug and play setup.
  • Flexible plans for all needs.
Main Highlights
  • ✅ DATA PLAN DETAILS: Enjoy your total data allowance over your plan duration, starting from the SIM’s first use. This is not a monthly allowance — it’s your full data package to use as needed! Need more? Top up in seconds via your MyGraspLet account.
  • ✅ UNMATCHED NETWORK COVERAGE: Say goodbye to weak signals! Our SmartSIM automatically switches between EE, Vodafone, O2 and Three, ensuring you always have the strongest network signal anywhere in the UK. No more dead zones or dropped connections!
  • ✅ WHAT’S INCLUDED: A 3-in-1 SIM card (standard, micro and nano sizes) with data to use across all major UK networks — EE, Vodafone, O2 and Three. This is a data-only SIM, meaning no voice or texts — just pure, reliable internet!
  • ✅ PLUG & PLAY SETUP: Most devices work straight out of the box! If needed, simply follow the APN setup guide included with your SIM pack, and you’re set. No tricky steps — just seamless, instant connectivity.
  • ✅ WIDE DEVICE COMPATIBILITY: Works flawlessly with smartphones, tablets, laptops, routers, security cameras, CCTV systems, IoT devices, agricultural equipment, solar monitors, wind turbines and more. Whatever your needs, we’ve got you covered!
  • ✅ MYGRASPLET ACCOUNT: Sign up and manage your SIMs with ease through the MyGraspLet online portal. Add multiple SIMs, track your data usage, top up with more data, and explore a variety of plans — all from one simple, user-friendly platform.
  • ✅ HIGH-SPEED PERFORMANCE: Get fast, dependable internet with support for 2G, 3G, 4G and 5G networks. Stream, browse and work online smoothly, without interruptions.
  • ✅ DEDICATED CUSTOMER SUPPORT: Our UK-based support team is available 24/7, all year round. Contact us anytime via support@grasplet.com or through your MyGraspLet account for fast, reliable assistance.
Show More
9.1
Superb
Product image 1
Product image 2
Product image 3
Product image 4
9.1
Superb
GraspLet

UK Multi-Network Data SIM Card | Automatically Selects the Strongest Network: EE, Three, O2, or Vodafone (5GB - 12 Months)

Why we love it
  • Effortless network switching technology.
  • Easy plug and play setup.
  • Flexible plans for all needs.
Main Highlights
  • ✅ DATA PLAN DETAILS: Enjoy your total data allowance over your plan duration, starting from the SIM’s first use. This is not a monthly allowance — it’s your full data package to use as needed! Need more? Top up in seconds via your MyGraspLet account.
  • ✅ UNMATCHED NETWORK COVERAGE: Say goodbye to weak signals! Our SmartSIM automatically switches between EE, Vodafone, O2 and Three, ensuring you always have the strongest network signal anywhere in the UK. No more dead zones or dropped connections!
  • ✅ WHAT’S INCLUDED: A 3-in-1 SIM card (standard, micro and nano sizes) with data to use across all major UK networks — EE, Vodafone, O2 and Three. This is a data-only SIM, meaning no voice or texts — just pure, reliable internet!
  • ✅ PLUG & PLAY SETUP: Most devices work straight out of the box! If needed, simply follow the APN setup guide included with your SIM pack, and you’re set. No tricky steps — just seamless, instant connectivity.
  • ✅ WIDE DEVICE COMPATIBILITY: Works flawlessly with smartphones, tablets, laptops, routers, security cameras, CCTV systems, IoT devices, agricultural equipment, solar monitors, wind turbines and more. Whatever your needs, we’ve got you covered!
  • ✅ MYGRASPLET ACCOUNT: Sign up and manage your SIMs with ease through the MyGraspLet online portal. Add multiple SIMs, track your data usage, top up with more data, and explore a variety of plans — all from one simple, user-friendly platform.
  • ✅ HIGH-SPEED PERFORMANCE: Get fast, dependable internet with support for 2G, 3G, 4G and 5G networks. Stream, browse and work online smoothly, without interruptions.
  • ✅ DEDICATED CUSTOMER SUPPORT: Our UK-based support team is available 24/7, all year round. Contact us anytime via support@grasplet.com or through your MyGraspLet account for fast, reliable assistance.
Show More
9
O2 Sim Card preloaded with UNLIMITED 4G/5G Data, Voice and Texts for 1 month

O2 Sim Card preloaded with UNLIMITED 4G/5G Data, Voice and Texts for 1 month

SIMPULSE
Main Highlights
  • Unlimited 4G/5G Data, Unlimited Calls & Texts, 30-Day Rolling Plan, Easy Activation, No credit checks or contracts
Show More
9.1
Superb
Product image 1
9.1
Superb
SIMPULSE

O2 Sim Card preloaded with UNLIMITED 4G/5G Data, Voice and Texts for 1 month

Main Highlights
  • Unlimited 4G/5G Data, Unlimited Calls & Texts, 30-Day Rolling Plan, Easy Activation, No credit checks or contracts
Show More
10
OneCall O2 Prepaid 30 Day Unlimited Data SIM - 4G/5G, 25GB EU Roaming
thumbnail 1
thumbnail 2
thumbnail 3
thumbnail 4

OneCall O2 Prepaid 30 Day Unlimited Data SIM - 4G/5G, 25GB EU Roaming

OneCall
Why we love it
  • Unlimited calls, texts, data.
  • Hassle-free prepaid option.
  • No commitments or contracts.
Main Highlights
  • Pre-loaded O2 SIM card with UNLIMITED calls, texts & 4G/5G Data for use in the UK. Fast 4G/5G Speeds with No Restrictions.
  • Includes 25GB of Data which can be used to Roam Free at no extra cost in the EU
  • Eliminate the Hassle of a PAYG SIM card with this Prepaid 30 Day SIM - No top ups required
  • SIM card is packaged for all sizes for free: Nano, Micro and standard SIM card size
  • No Contracts, No Commitments, No Credit Checks
Show More
9.1
Superb
Product image 1
Product image 2
Product image 3
Product image 4
9.1
Superb
OneCall

OneCall O2 Prepaid 30 Day Unlimited Data SIM - 4G/5G, 25GB EU Roaming

Why we love it
  • Unlimited calls, texts, data.
  • Hassle-free prepaid option.
  • No commitments or contracts.
Main Highlights
  • Pre-loaded O2 SIM card with UNLIMITED calls, texts & 4G/5G Data for use in the UK. Fast 4G/5G Speeds with No Restrictions.
  • Includes 25GB of Data which can be used to Roam Free at no extra cost in the EU
  • Eliminate the Hassle of a PAYG SIM card with this Prepaid 30 Day SIM - No top ups required
  • SIM card is packaged for all sizes for free: Nano, Micro and standard SIM card size
  • No Contracts, No Commitments, No Credit Checks
Show More

We scanned 475 products

We reviewed these offers relevant to the O2 Sim Card 5g within online retailers such as Amazon, eBay and other local retailers, ensuring we covered all major brands and models. The products we selected come from trusted brands like Scancom, Sims4Travel, Wave Connect, GraspLet, SIMPULSE, OneCall, all of which have a reputation for consistently delivering high-quality products that users love and innovative approaches for function & design.
For the best O2 Sim Card 5g in the market, we considered we took a deep dive into 2376 online reviews , focusing on elements like user satisfaction, performance in real-world conditions, and long-term reliability. Our ranking also evaluates each review’s relevancy, authenticity, up-to-dateness and depth so that the comparison is more sound.

We concluded that: