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

Fantastic choice! Simple install and activation instructions. Worked perfectly, giving me calls, texts and data in the USA

Really easy to activate and set up, worked perfectly in the USA. Just make sure you follow the instructions on how to set up before going on holiday.

Very tricky to activate. Even though it has "3" printed on it, you must sign up with a website called Speakeasy, then you get an activation email branded as Love2surf (no mention of Speakeasy or 3). You then must make a phone call or send a text within the uk, before you can then activate foreign roaming. They then send you a welcome email, inviting you to download the My3 app (to monitor data usage, etc) - but impossible to sign in to My3 because 3 will only accept accounts with 07.. numbers, but Speakeasy numbers start 08... Eventually got it working, and data worked in uk. Then we flew to Singapore. Data worked ok here for 1 day, then we went to Malaysia, and it worked for 1 day. Then it stopped working. Every attempt to turn on data roaming brought up a dialog saying I had to log in to "three.co.uk", which was not possible. Tried everything as described in help, resetting network, removing / inserting SIM card, rebooting etc.. but data functionality was impossible. Finally bought a local SIM with 50Gb of roaming for $15 (£9 approx) which worked perfectly across Asia.

I bought the Three 4G/5G SIM card as a prepaid option to ensure I had reliable data when I landed in Colombia, and it worked out really well. The setup process is straightforward if you follow the instructions carefully. One thing I found especially useful was that it’s cheaper to buy this online than in a physical store, so it’s a great value for what you get. Before you leave the UK, it’s essential to activate the card by making an outbound call and sending a few texts to ensure it’s fully set up for roaming. If you skip this step, you might run into issues with using it abroad. Once activated, I had no issues accessing data or staying connected while traveling, with a generous 12GB roaming allowance that suited my needs perfectly. Overall, this SIM card is a solid choice for travelers looking for an affordable way to stay connected across multiple destinations, and the 30GB (was 75GB at purchased, but Three removed that package) of data for UK use is a nice bonus if you’re traveling locally as well. Highly recommended for anyone needing a hassle-free roaming solution!

It probably deserves 4.5 stars, but that's not possible to give. Almost 5 stars except for one issue. Set up was fine and easy. It didn't activate exactly when I asked, but customer service was very responsive and helpful, even outside the hours they advertise. The packaging and emails say you need to make a UK phone call after activation, but that wasn't the case, confirmed by the seller. I needed to restart the phone for the data to work, that wasn't mentioned by the seller, but I've had similar before so knew what to do. It worked flawlessly in Singapore and Australia. The only slight issue was in Indonesia. The first day the local network must have been down as 4g was showing on the phone, but nothing worked. That wasn't the sellers fault obviously, but the sim only allowed you to connect to one network in Indonesia and that was the one that was down on that day. If I could have connected to an alternative it would have got 5 stars. Same at another island in Indonesia, only one network was available and it was one the sim wasn't allowed to connect to. Overall though, when the network was available it worked absolutely fine. I often managed to connect when 10-15 miles off shore as a bonus. Overall absolutely worth the money and great customer service too

Purchased this sim for a trip to the US. Read a bunch of reviews and was concerned that I'd need to pay more than the cost of the sim. I've just arrived home and can happily report that there were ZERO EXTRA CHARGES! Got my sim card delivered the next day and simply followed the very clear instructions included. It worked perfectly and I had great coverage everywhere I went in the northeast of the US. I assume coverage is decent in the areas I was in and maybe if you're off to rock climb in the desert or hike in the middle of the forest it might be different. But I had a strong signal and fantastic connectivity the whole time. Just in case anyone is worried, here's the deal... Activate the sim BEFORE you leave the UK. Once you get your sim, you activate it via a very simple online form. The address for the website is included by a QR code and it's printed on the envelope you'll receive. You'll get a text from 3 and from the company who is activating for you. I was activated within a couple of hours. Once you're notified that the nunber is active you'll need to place one outgoing call that connects to a UK number. I called my husband's mobile. He never answers but it connected to his voicemail and that was enough. Do this while you're still in the UK! It's included in your package and is free. Then you're all set to go. This is a fantastic deal! Great value for money and I highly recommend.

Brilliant product to use abroad. Extremely fast customer service and very helpful and friendly when I had a problem connecting which was my fault but they were very helpful and soon got me online. Will buy again

Harder to set up, but once done it's good