Get the Three Mobile AIO35 eSIM for unlimited UK data & 30GB roaming in 70+ countries. Easy setup, 30-day validity, and 1-year QR activation. Shop now. To read and download the full terms and conditions and Three’s privacy policy, visit: https://www.three.co.uk/terms-conditions. For support, call +44 7782 333 333 or visit: https://www.three.co.uk/support. To check your remaining allowance, dial 333 or 444. The QR code expires 1 year from the date of issue.
Unlimited Connectivity: The Three Mobile AIO35 eSIM Experience
Stay connected effortlessly with the Three Mobile AIO35 eSIM, the premier choice for travelers and UK residents alike. This powerful digital SIM provides unlimited high-speed data and voice calls within the UK, ensuring you never run out of bandwidth for streaming or work. Beyond British borders, the AIO35 shines with a massive 30GB roaming allowance covering over 70 worldwide destinations, including Europe, the USA, and Australia. Designed for convenience, this eSIM eliminates the need for physical swaps and offers instant activation. Whether you are a digital nomad or a holidaymaker, Three’s reliable network keeps you linked globally.
Roaming Data Country Coverage:
Aland Islands (Finland), Austria, Azores (Portugal), Balearic Islands (Spain), Belgium, Bulgaria, Canary Islands (Spain), Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, French Guiana, Germany, Gibraltar, Greece, Guadeloupe, Guernsey, Hungary, Iceland, Ireland, Isle of Man, Italy, Jersey, Latvia, Liechtenstein, Lithuania, Luxembourg, Madeira (Portugal), Malta, Martinique, Mayotte, Netherlands, Norway, Poland, Portugal, Reunion, Romania, Saint Barthelemy, Saint Martin, San Marino (Italy), Slovakia, Slovenia, Spain, Sweden, Switzerland, Vatican City, Australia, Brazil, Chile, Colombia, Costa Rica, El Salvador, Guatemala, Hong Kong (China), Indonesia, Israel, Macao (China), New Zealand, Nicaragua, Panama, Peru, Puerto Rico, Singapore, Sri Lanka, United States of America (USA), Uruguay, US Virgin Islands, Vietnam, United Kingdom
Key Features at A Glance
Feature
Details
Data Allowance
Unlimited UK Data
Roaming Data
30GB Free Roaming in 70+ Countries
Voice Calls
Unlimited UK Minutes (UK Numbers Only)
Validity
30 Days from Activation
QR Expiry
1 Year from Issue Date
Support
24/7 via 333 or +44 7782 333 333
Why Get This eSIM?
Massive Global Reach: Unlike standard roaming plans, the AIO35 includes 71 destinations such as Brazil, Singapore, Vietnam, and the USA, making it a true world-traveler companion.
No More Physical SIMs: Enjoy the luxury of dual-SIM functionality. Keep your home number active while using Three’s data, all without ever opening your phone's SIM tray.
Unlimited UK Freedom: While in the UK, data caps are a thing of the past. Stream 4K content, join video calls, and hotspot other devices without worrying about overages.
Cost-Effective Roaming: Avoid expensive daily roaming charges in popular spots like Switzerland, the Isle of Man, and Hong Kong with the inclusive 30GB Go Roam allowance.
Flexible Activation: With a QR code that stays valid for a full year, you can purchase your plan today and activate it exactly when your journey begins.
How to Install the eSIM
Check Compatibility: Ensure your smartphone is eSIM compatible and carrier-unlocked.
Connect to Wi-Fi: A stable internet connection is required to download the eSIM profile to your device.
Scan QR Code: Navigate to your phone's Settings > Cellular/Mobile Data > Add eSIM, then scan the provided QR code.
Label Your Plan: Assign a name to the new line (e.g., "Three Travel") to distinguish it from your primary SIM.
Restart & Go: Once the download is complete, restart your phone and ensure "Data Roaming" is toggled ON if traveling outside the UK.
Frequently Asked Questions
Can I use this eSIM for international calls?
The unlimited minutes apply to UK numbers only while you are in the UK or in a Go Roam destination. Calls to non-UK international numbers may require additional credit.
How do I check my remaining 30GB roaming balance?
Simply dial 333 or 444 from your device to receive a real-time update on your remaining roaming allowance and plan validity.
Does the eSIM support 5G?
Yes, where Three has 5G coverage and your device is 5G-ready, you will enjoy ultra-fast speeds. In roaming destinations, speeds will depend on the local provider.
What happens if I don't use the QR code immediately?
You have plenty of time! The QR code remains valid for one year from the date of issue, allowing you to buy now and use it for a future trip.
More Information
More Information
Country Coverage and Roaming Partners
Aland Islands (Finland), Austria, Azores (Portugal), Balearic Islands (Spain), Belgium, Bulgaria, Canary Islands (Spain), Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, French Guiana, Germany, Gibraltar, Greece, Guadeloupe, Guernsey, Hungary, Iceland, Ireland, Isle of Man, Italy, Jersey, Latvia, Liechtenstein, Lithuania, Luxembourg, Madeira (Portugal), Malta, Martinique, Mayotte, Netherlands, Norway, Poland, Portugal, Reunion, Romania, Saint Barthelemy, Saint Martin, San Marino (Italy), Slovakia, Slovenia, Spain, Sweden, Switzerland, Vatican City, Australia, Brazil, Chile, Colombia, Costa Rica, El Salvador, Guatemala, Hong Kong (China), Indonesia, Israel, Macao (China), New Zealand, Nicaragua, Panama, Peru, Puerto Rico, Singapore, Sri Lanka, United States of America (USA), Uruguay, US Virgin Islands, Vietnam, United Kingdom
