Useful Info
Frequently Asked Questions
What are Prepaid Travel SIM Cards?
How to keep track of your data usage from your phone settings
How to make calls/texts back home while you travel
How to turn on Data Roaming
How to change your APN settings
SIM Activation
Policies
Shipping & Delivery
Asia SIM & eSIM Guides
Asia SIM Card 6GB | Data-Only | 15 Days
eSIM South East Asia 6GB | Data-Only | 12 Days
Indonesia SIM Card 6GB | Data-Only | 12 Days
Indonesia SIM Card 10GB | Data-Only | 30 Days
Japan SIM Card 10GB | Data-Only | 30 Days
South East Asia SIM Card 6GB | Data-Only | 12 Days
South East Asia SIM Card 10GB | Data-Only | 30 Days
Thailand SIM Card 15GB | Data-Only | 30 Days
Japan SIM Card 6GB | Data-Only | 12 Days
Europe & UK SIM & eSIM Guides
EU & UK SIM Card | 71 Countries | 10GB | 30 Days | 3UK
Europe & UK SIM Card 71 Countries | 12GB | 30 Days
UK SIM Card 25GB, 50GB & Unlimited | 30 Days
eSIM Europe & UK Travel- BT| 15GB | 15 Days
eSIM Europe & UK Travel- BT| 30/45/60 GB | 30 Days
eSIM Europe & UK Data-Only | 35 Countries | eSG
EU & UK SIM Card | 71 Countries | 12GB | 30 Days | 3UK
Explorer SIM Guide
Troubleshooting
Start here for Troubleshooting
My data isn't working
I keep getting messages telling me to top-up
I've run out of data, how do I top-up?
Explorer Travel SIM Card | 71 Countries | Data-Only | 12GB | 365 Days
Middle East SIM Guide
New Zealand & Fiji SIM & eSIM Guides
Fiji SIM Card 6GB | Data-Only | 15 Days
eSIM New Zealand SIM 3GB &10GB | 30 Days
New Zealand SIM Card 2.5GB, 10GB & Unlimited Data, Calls & Texts | 30 Days
Tourist SIM Guide
South America SIM Guide
Latin America : Data-Only eSIM | 14 Countries | eSG
South America SIM Card 12GB | Data-Only | 30 Days
USA, Canada & Mexico SIM SIM & eSIM Guides
USA SIM Card Unlimited 30 Days | T-Mobile
USA SIM Card 6GB, 15GB & Unlimited Data | 30 Days | Ultra Mobile
USA & Canada SIM Card 3GB | Data-Only | 30 Days
USA, Canada & Mexico SIM Card 6GB | Data-Only | 15 Days
USA, Canada & Mexico SIM 15GB 30 Days | AT&T
USA Unlimited & Canada & Mexico 25GB- 30 Days | AT&T
USA eSIM Unlimited 30 Days | T-Mobile
USA/Canada/Mexico: Data-Only eSIM 1GB-20GB | eSG
USA : Data-Only eSIM 1GB-20GB | eSG
eSIM Information
eSIM Frequently Asked Questions
eSIM Compatible Devices
How to find your phone EID and IMEI for eSIM
How to set up eSIM on your Android Device
How to set up your eSIM on Apple device
Australia & NZ eSIM Guides
Africa eSIM Guides
- All Categories
- Explorer SIM Guide
- Troubleshooting
- My data isn't working
My data isn't working
Updated by Supriti
If you've just activated your SIM
If you've just activated your SIM and you've got a signal, you might need to check a couple of things to get your data working.
- Check that you have Data Roaming & Mobile Data turned on in your Settings.
- Make sure that you have changed your APN settings to match the following:
Name: 3
APN: three.co.uk
User name: [leave this field blank]
Password: [leave this field blank] - Restart your device
- If it's still not working, try the SIM in another device to see if it'll work there.
If you've been using your SIM but your data has suddenly stopped working
- Check that you have data balance left.
- You might need to manually switch network providers through your settings
Apple
Settings > Mobile > Network Selection > Disable Automatic > Wait for networks to pop up and select another one > Restart your phone
Android
Settings > Connections > Mobile Networks > Network Operators > Search networks manually > Wait for networks to pop up and select another one > Restart your phone
Which one do I choose? 🤔
Try any of them, and if it doesn't work, try another one!