Advertising Disclosure International Sim Card Comparison - July 2025
6 Best International Sim Card In the UK
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service levels, popularity trends, and more. The rankings reflect our opinion and should be a good starting point for shopping. By purchasing the products we rank, you’ll get the lowest price we found while we may receive a commission at no cost to you, which will help us continue to provide you with value.
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| 1 Best Choice  9.8Exceptional | 2  9.7Exceptional | 3  9.6Exceptional | 4  9.5Excellent | 5  9.4Excellent | 6  9.3Excellent |
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ModelSIM2ROAM USA Prepaid SIM Card Unlimited 5G/4G LTE High-speed Internet Data in US (Hawaii included) Unlimited Calls and Texts (SMS) in United States Refillable! (15 Days) | Model 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). | Model 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. | Model love 2 surf THREE 4G/5G SIM Card UK & ROAM FREE in over 70 destinations - PREPAID PAYG £10 Bundle - 20GB + (20GB FREE DATA) Unltd Texts & Mins - ROAMING ALLOWANCE 6GB | Model Vodafone 5G/4G International SIM card. Unlimited UK Data + Unlimited Calls back to the UK. 25GB roaming in 70+ Countries. Preloaded + Prepaid for 30 days, not a Pay as You Go SIM card. | Model Love Mobile Data Only Sim Card - International Multi-Network 4G/5G Prepaid Pay As You Go Data Sim for Mobile Phones, WiFi Routers, & More, Europe, UK, Switzerland & Turkey Coverage, 5GB for 60 Days |
BrandSIM2ROAM | Brand Sims4Travel | Brand Sims4Travel | Brand love 2 surf | Brand SimRush | Brand love 2 surf |
Reviews | Reviews | Reviews | Reviews  | Reviews | Reviews |
Tech Specs | |||||
product dimensions10 x 10 x 0.2 cm 10 g | product dimensions 8.6 x 0.1 x 5.4 cm 2 g | product dimensions 5.4 x 4.2 x 0.1 cm 2 g | product dimensions 11.99 x 11.99 x 0.99 cm 18.14 g | product dimensions - | product dimensions - |
Available On | Available On | Available On | Available On | Available On | Available On |
Our Top 3 Picks
Here are the top 3 recommended products with more information to help you find the right product for you
9.8
1SIM2ROAMSIM2ROAM USA Prepaid SIM Card Unlimited 5G/4G LTE High-speed Internet Data in US (Hawaii included) Unlimited Calls and Texts (SMS) in United States Refillable! (15 Days)
Why we love it
Local USA sim card.
Unlimited 5G/4G data.
Unlimited calls/texts.
Main highlights- Weak signal strength regions: National Parks, Rural areas, Montana, North Dakota, South Dakota, Nebraska, West Virginia, Alaska.
- Validity: Valid for 15 days upon activation. Plan is refillable.
- USA local SIM card. Uses T-Mobile network. Good reception and signal. NO contract or ID authentication needed!
- Smart phones ONLY. Samsung A series (A40, A50, A51, A70 etc.) and China brand (HUAWEI, OPPO, XIAOMI etc) & SONY are NOT fully compatible. Plus,please make sure your device works on T-Mobile's network, Band 2 and Band 4, otherwise it won't be working.
- Sim Card Size: Standard/ Micro/ Nano all size tri-cut SIM. The sim card fits in any cell phone devices physically.
- Phone calls and Texts: Unlimited Calls & Texts among US, Canada and Mexico.
- Data Plan: Unlimited 5G | 4G internet Data in USA nation-wide (Hawaii is included) + 5GB of 5G/4G Data in Canada and Mexico. Hotspot tethering is supported (3G).
- Contact us anytime when you need assistance!
- Activation: Activation could take up to 24 hours. Please submit the request at least 2 days in advance. Your SIM card will be activated on your scheduled date (North America Central Time Zone).
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9.7
2Sims4Travel
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).
Why we love it
Unlimited data with no contracts.
Free roaming in 47 countries.
Supports multiple devices easily.
Main highlights- 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
- 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
- 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
- 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
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9.6
3Sims4Travel
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
No roaming fees in 70+ countries.
Fast 4G/5G speeds with tethering.
Easy activation and great support.
Main highlights- WHO SHOULD GET IT? Anyone who hates roaming fees when travelling. Keep connected with no hidden costs
- 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.
- 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.
- LEGAL STUFF: Capable device required. No Personal ID required
- 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.
- 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
- 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
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The TopChoice.co.uk Team selects top-of-the-line items from a wide selection and conducts rigorous evaluations on almost all the products available on the internet. We rank each product based on how well it matches our criteria.We can ensure that the product is well-tested with the help of our expertise, experts, and artificial intelligence technology. TopChoice.co.uk requires consistent care for the products we review, ensuring that our assessments are always accurate and up to date.
Features
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Consumer Reviews
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Popularity
Popularity is an important criterion in choosing a product. Several factors contribute to the popularity of the products on our site, including prestige, relevance, reputation, news, and more.
Value for money
TopChoice.co.uk compares product attributes to price, examines tech specs, ratings and reviews, and more.When compared to other criteria, does the pricing seem reasonable? In order to provide genuine value for money, our team must answer that question with advanced calculations.
Value for money
TopChoice.co.uk compares product attributes to price, examines tech specs, ratings and reviews, and more.When compared to other criteria, does the pricing seem reasonable? In order to provide genuine value for money, our team must answer that question with advanced calculations.
