Not being connected to the internet sucks. So give your phone or tablet legs and get online wherever you are with a Three Trio Data SIM.

Wherever your feet want to go. It is the internet with legs. Just pop this super simple Three data SIM straight into your unlocked 3G or 4G device and that’s it. You can connect your device to the internet whether you are at home, at the office, or out and about. Pretty much anywhere you like.

3 PAYG 3G Trio Data SIM Pack Incl. 3GB Data

3 PAYG 3G Trio Data SIM Pack Incl. 12GB Data

Three’s Pay As You Go Trio SIM has all SIM types on one card, so whether you need a standard, micro or nano SIM, you can just pop out the one you need. This particular SIM also comes with 12GB of preloaded data, so you can catch up on the game highlights, Skype your gap year kids, play Angry Birds and tweet your heart out. This data is valid for up to 12 months, then after this, you just top up and Pay As You Go.

Being charged to use your data abroad is not great, especially if it racks up a huge bill at the end of it. However, with Three’s SIM, you can use your data abroad at no extra cost in many ‘Go Roam‘ destinations while on holiday, including USA, Australia, France and Spain.

In particular, paying extra for 4G sucks. Three believes you should get fast internet at no extra cost. Which is why they offer 4G at no extra cost. All you need is a 4G device and be in a 4G area.

Need help using your PAYG 3G Trio Data SIM? Or perhaps you’re wondering how it works? If so, carry on reading to discover answers to the questions you may have.


I already have a SIM card can I still buy a Pay As You Go top-up?

Yes. If you have a dual SIM phone you don’t even need to take out your current SIM.

How do I top up my SIM card?

There are lots of easy ways to top-up on Pay As You Go.

My3 Top Up: The fastest way to top-up is through your My3 account, which allows you to register a credit/debit card for quick future top-ups. To do this you’ll need to log in or register if you don’t have an account.

Three App Top Up: You can also top up easily with a registered card on the Three app.

Web Top Up: You can also top-up on the web without registering a card or logging into My3, you’ll just need to re-enter your details each time you top-up.

Head to >Web top-up, enter the number you’d like to top-up, select Credit/debit card or Voucher, then follow the on-screen instructions to top-up.

Cash Machine Top Up: You can top-up at any Barclays or HSBC cash machine if you have a card from one of these banks:

  • Barclays
  • HSBC
  • Nationwide
  • The Coventry
  • Yorkshire
  • Clydesdale

When you’re at the cash machine, you just need to enter your phone number and select the amount you want to top up with. Your Pay As You Go account will be topped up using the money from your bank account.

Will this SIM card work in my country?

Visit Three’s list of “Go Roam” countries to see where this SIM card will work or pop in your destination in the search bar to find out if it’s part of the 71 Go Roam destinations.

Will this SIM card work with my device?

The data SIM is designed to work with any 3G or 4G tablet, dongle or mobile Wi-Fi device.

Do I have to activate it immediately when I buy it?

As long as the Three 3GB Pay As You Go Trio Data SIM isn’t put in any device this can be used later on in the year.

Can I make phone calls or text messages with this SIM?

The SIM is a data-only sim so you will not be able to call or text with it.

Do I get free roaming abroad with a Pay As You Go SIM?  

No, you buy credit so you can use data abroad at a cheaper rate than you may be charged by your existing network, but it is not free.

Can I use all the data in the first month?

Yes. It is a fixed amount of data – you can use it all on the first day, or over the course of 12 months. It is completely up to you.

If I use some of the data in one country, can I use the rest in another?

Yes. As long as you are using the SIM in a country that is under Three’s list of “Go Roam” countries.

Is this one SIM or three SIMS?

This is three SIM’s in one.

Can it be used abroad?

Yes, it can be used abroad. Have a look at the Three website at “Go Roam” countries. It lists all the countries where you can use your phone exactly as you do at home.

How can I check how much data is left?

To check how much data is left, download the Three app to keep track of your allowances. If you don’t have an iPhone, iPad or an Android device we recommend doing the following:

  1. Go to Planet 3 or type three.co.uk into your phone’s browser
  2. Select My3 Account
  3. Select Check allowance now
Thinking of purchasing a 3G Pay As You Go SIM? Head to our website now to view our full range of Three SIM cards.
Anya Beuzeval

Apps that Help from Dusk to Dawn

Previous article

Rocketbook: A Notebook Connected to The Cloud

Next article

More in How to

You may also like

1 Comment

  1. […] using your PAYG 3G Trio Data SIM? Or perhaps you’re wondering how it works? If so, head to our 3 PAYG SIM Pack: Why, Where, and How guide for answers to all of your […]

Leave a reply

Your email address will not be published. Required fields are marked *