Best International Sim Card of 2025

Last updated on 16/09/2025

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9.8

Exceptional

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EE PAYG SIM card preloaded with 120GB of Data

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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

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.

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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.

SIM2ROAM 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)

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Why we love it

Hassle-free activation and refill.
Expansive network coverage.
Tri-cut SIM versatility.

Main Highlights

USA local SIM card. Uses T-Mobile network. Good reception and signal. NO contract or ID authentication needed!
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).
Phone calls and Texts: Unlimited Calls & Texts among US, Canada and Mexico.
Validity: Valid for 15 days upon activation. Plan is refillable.
Sim Card Size: Standard/ Micro/ Nano all size tri-cut SIM. The sim card fits in any cell phone devices physically.
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).
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.🚨
Weak signal strength regions: National Parks, Rural areas, Montana, North Dakota, South Dakota, Nebraska, West Virginia, Alaska.
Contact us anytime when you need assistance!

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).

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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

EIOTCLUB International Data SIM Card for 200 Countries, 1GB/30Day Prepaid Travel SIM Card, 5G/4G LTE Cellular for Phone Tablet WiFi Hotspots Router, No Contract or Roaming Charges, No Calls or SMS

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Why we love it

Global coverage, seamless connectivity.
No contracts or activation fees.
Compatible with multiple devices.

Main Highlights

International Data Plan: This EIOTCLUB Global SIM card includes a total of 1GB of data for 30 days (after 1st connection to network). Seamlessly connect to 5G/4G high-speed networks in the UK and over 200 countries worldwide. Data-only, no voice or SMS (no phone number).
Easy Setup: No contract, no ID required, no additional fees, and free roaming. Simply insert the SIM, enable data roaming, and manually set the corresponding APN if needed. Europe APN: 'bicsapn' / America APN: 'america.bics' / Asia APN: 'asia.bics'
Reliable Network Service: The EIOTCLUB data-only SIM card will automatically connect to the network with the best signal. We provide different data plans to meet your needs. All plans, whether global or local, can be managed and refilled through the EIOTCLUB app/web.
Device Compatibility: The global travel SIM card is compatible with iOS & Android phones, tablets, WiFi hotspots, portable routers, and other unlocked IoT devices. The EIOTCLUB SIM card comes pre-cut in standard, micro, and nano sizes.
In-App Online Support: Available 24/7 for quick, professional assistance. If you encounter any issues, simply send a message with your SIM card's ICCID number.

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

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Why we love it

Generous data bundle with auto-renew.
Global roaming in 70 destinations.
Fastest 5G network in UK.

Main Highlights

Quick & Easy Sim Activation - FREE 20GB PROMO – total 40GB
Bundle lasts 30 days from activation. NOTE: CREDIT WILL BE ZERO - allocated to bundle allowance
Travelling abroad - GO ROAM in over 70 destinations (includes EUROPE) - ROAMING ALLOWANCE 6GB, calls and texts to UK numbers only
UK’s fastest 5G network -Trio SIM fits any unlocked 4G and 5G device. Personal hotspot/tethering allowed
INTERNATIONAL CALLING SERVICE TO USE WITH SIM - E.g. USA - 0.3p/min and EU - 0.3p/min (optional extra)

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

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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.

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

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Why we love it

Reliable connectivity throughout Europe.
Fits most smartphones seamlessly.
Easy monitoring and top-ups.

Main Highlights

𝗘𝘅𝘁𝗲𝗻𝗱𝗲𝗱 𝗖𝗼𝘃𝗲𝗿𝗮𝗴𝗲: Enjoy 5GB of data over 60 days with our prepaid data SIM, ensuring reliable connectivity throughout Europe, including UK, Switzerland and Turkey
𝗨𝗻𝗶𝘃𝗲𝗿𝘀𝗮𝗹 𝗖𝗼𝗺𝗽𝗮𝘁𝗶𝗯𝗶𝗹𝗶𝘁𝘆: Triple cut SIM card (Standard/Micro/Nano) fits most smartphones and is compatible with unlocked 2G, 3G, 4G, and 5G routers and other devices
𝗘𝗻𝗵𝗮𝗻𝗰𝗲𝗱 𝗡𝗲𝘁𝘄𝗼𝗿𝗸 𝗦𝘂𝗽𝗽𝗼𝗿𝘁: Our travel SIM connects seamlessly to multiple networks for optimal coverage, automatically switching to the strongest signal available
𝗩𝗲𝗿𝘀𝗮𝘁𝗶𝗹𝗲 𝗕𝘂𝘀𝗶𝗻𝗲𝘀𝘀/𝗣𝗲𝗿𝘀𝗼𝗻𝗮𝗹 𝗨𝘀𝗮𝗴𝗲: Use our prepaid SIM for personal hotspot/tethering and make voice calls and send messages via popular apps like WhatsApp, Skype, iMessage, FaceTime, Messenger, Signal and connect IOT/M2M devices
𝗘𝗮𝘀𝘆 𝗦𝗲𝘁𝘂𝗽: Our UK, Europe, Switzerland and Turkey sim card includes clear instructions for monitoring live usage, instant data top-ups, and creating personalised plans based on your destination, data size, and duration

EE Pay As You Go SIM Card UK PREPAID PAYG £10 Bundle 8GB + (12GB FREE DATA every month for 6 months with regular top ups (Promotion request deadline of 07.10.2025)

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Why we love it

Free 12GB data promo.
Trio SIM fits any device.
4G speeds and WiFi calling.

Main Highlights

Quick & Easy Sim Activation - FREE 12GB PROMO activate by 07 OCT 2025 – total 20GB
The sim pack you receive will state 8GB on the printed packaging. This will be upgraded to 20GB ‘Extra Data’ promotional offer after activation on our website
Bundle lasts 30 days from activation -BUNDLE DOES NOT INCLUDE EUROPEAN ROAMING. Trio SIM fits any unlocked 4G and above phone or devices locked to EE network. Personal hotspot/tethering allowed
4G speeds up to 25Mbps (No 5G with PAYG). WIFI CALLING + WIFI COVERAGE ON LONDON UNDERGROUND + 150,000 LOCATIONS ACROSS UK
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

O2 SIM Card UK & EUROPE (ROAM FREE) PREPAID PAYG £10 Bundle -8GB + Unltd Texts & Mins - ROAMING ALLOWANCE 8GB + International Calling Option - (Love2surf RETAIL PACK)

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Why we love it

Convenient prepaid bundle.
Roaming within EU zone.
Affordable international calls.

Main Highlights

QUICK & EASY SIM ACTIVATION - 8GB
Bundle lasts 30 days from activation. NOTE: CREDIT WILL BE ZERO - allocated to bundle allowance (see description)
MUST USE SIM IN UK PRIOR TO USE IN EUROPE – data is limited to 25GB while roaming (calls & texts allowance is for UK numbers only)
Trio SIM fits any unlocked 2G and above phone or devices locked to O2 network. Personal hotspot/tethering allowed
INTERNATIONAL CALLING SERVICE TO USE WITH SIM - E.g. USA - 0.3p/min and EU - 0.3p/min (optional extra)

8.8

Excellent

We scanned 338 products

We reviewed these offers relevant to the International Sim Card 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 EE, Sims4Travel, SIM2ROAM, EIOTMART, love 2 surf, Lebara, all of which have a reputation for consistently delivering high-quality products that users love and innovative approaches for function & design.

For the best International Sim Card in the market, we considered we took a deep dive into 1691 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:

The clear winner of our analysis is EE PAYG SIM card preloaded with 120GB of Data. We love many things about this product by EE. What sets it apart from the competition is Generous 120GB data included, Valid for a year from activation, No contracts, no commitments.
The best value product for most shoppers and where user satisfaction is continuously the highest is 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. by Sims4Travel based on online reviews by bloggers, experts and online shoppers.
The biggest bargain at the moment for International Sim Card and the best cost-to-value ratio is EE PAYG SIM card preloaded with 120GB of Dataat EE with a 18% discount.
Our list of the best International Sim Card is updated regularly to reflect new releases and changes in product availability, so be sure to check back often for the latest rankings and discounts.

Best International Sim Card of 2025

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We scanned 338 products

We concluded that: