Three UK Prepaid SIM Card User Guide

What's Included?

• Option 1 – 40GB Data
  • 40GB Data in UK (4G/5G/LTE)
  • 6GB Roaming Data in EU (4G/5G/LTE)
• Option 2 – 100GB Data
  • 100GB Data in UK (4G/5G/LTE)
  • 12GB Roaming Data in EU (4G/5G/LTE)
• Option 3 – 200GB Data
  • 200GB Data in UK (4G/5G/LTE)
  • 18GB Roaming Data in EU (4G/5G/LTE)
• Option 4 – Unlimited Data
  • Unlimited Data in UK (4G/5G/LTE)
  • 30GB Roaming Data in EU (4G/5G/LTE)
• Hotspot/Tethering: allowed in UK & EU
• Unlimited Calls & SMS within the UK & EU
  (Calls to UK numbers only when outside UK & EU. Unlimited minutes apply to UK mobile numbers starting with 07 and landlines starting with 01 or 02. Calls to premium, non-geographic, or international numbers are not included.)
• Comes with a UK phone number (+44)
• Network: Three UK
• Speed: 4G/5G/LTE (speed may vary by plan and country)
• Validity: 30 days from activation
• ID Requirement: No
• Recharge: available 
• Delivery: Australia Post

Where You Can Use This SIM

EU Countries (Calls & Data): Aland Islands, Austria, Azores, Balearic Islands, Belgium, Bulgaria, Canary Islands, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, French Guiana, Germany, Gibraltar, Greece, Guadeloupe, Guernsey, Hungary, Iceland, Ireland, Italy, Latvia, Liechtenstein, Lithuania, Luxembourg, Malta, Martinique, Netherlands, Norway, Poland, Portugal, Réunion, Romania, Saint Martin, San Marino, Slovakia, Slovenia, Spain, Sweden, Vatican City.

Outside EU (Data Only): Australia, Brazil, Chile, Colombia, Costa Rica, El Salvador, Falkland Islands, Gibraltar, Guatemala, Hong Kong, Indonesia, Israel, Jersey, Macau, New Zealand, Panama, Peru, Puerto Rico, Singapore, Sri Lanka, Switzerland, Uruguay, US, US Virgin Islands, Vietnam.

Before You Depart

There’s nothing you need to do before your trip. Your SIM is plug-and-play.

Only insert your SIM upon arrival in the UK or your destination country to avoid early activation. Once inserted, your 30-day service period will start automatically.

Upon Arrival

After arriving, insert your SIM and ensure both Mobile Data and Data Roaming are turned ON in your phone settings.

To enable Data Roaming:

• iOS: Settings > Mobile > Your 3UK SIM > Turn ON “Data Roaming”
• Android: Settings > Connections > Mobile Networks > Enable “Data Roaming”
• Pixel: Settings > Network & Internet > Mobile Network > Advanced > Toggle ON “Data Roaming”

APN Settings

Most devices will automatically set up your APN. If not, please configure it manually:

• APN Name: 3 (any name is fine)
• APN: three.co.uk
• Username: (Leave blank)
• Password: (Leave blank)

Your Phone Number

Your SIM comes with a UK number (+44). You’ll receive your number via SMS once the SIM is activated. Please note, it cannot be viewed before activation.

How to Check Your Balance or Recharge

Visit https://new.three.co.uk/account/login and create a My3 account using your phone number.

You can also download the Three UK App (set your app store region to the UK) to check usage and top up.

Call & Text Guide

Within UK & EU: Dial local mobile or landline numbers directly.

Outside UK/EU: You can only call UK numbers. Dial +44 followed by the number (omit the leading 0).

Example: +44 7123 456789

Calling to Australia

International calls to Australia are not included. Use internet-based apps such as WhatsApp, Viber, Skype, or Messenger for communication.

Receiving Calls & Messages

Friends and family can contact you on your UK number starting with +44. (Standard international call/SMS charges may apply from their provider.)

Hotspot & Tethering

Hotspot/tethering is supported within the UK and EU only. Not available outside these regions.

Network Partners

In the UK, your SIM uses Three UK’s own network (covering 99% of the population). When roaming, it automatically connects to partner networks for best coverage.

Extending Beyond 30 Days

You can recharge through your My3 account or the Three App after 30 days. Outside the UK, Three limits roaming data recharges to one every 30 days with a fair-use cap (12GB roaming data per 30 days).

Alternatively, you can purchase additional SIMs before your trip. Each new SIM will come with a new phone number.

Troubleshooting & Support

If you encounter issues overseas:

1. Visit our FAQ: globalstarlink.com.au/pages/faq
2. Live Chat on our website (Mon–Sun, 9 AM–1 AM AEST)
3. Email: hello@globalstarlink.com.au
   Include your order number, SIM number, location, phone model, and screenshots of any errors.
4. Contact Three UK directly via Three UK Support or dial 333 (free from Three phones).