The short answer
Thailand is on Three's Go Roam Around the World Extra list, so your plan works there for a daily charge of £8 (about $11) on the days you use it, or for a pass bought in advance. Past a couple of days I would buy Ringo Light: $22.99 for 2 weeks or $32.99 for 30 days, unlimited data at full speed. Three wins where it counts for a lot of people: your own number, calls and texts, nothing to install and a bill you already pay.
That is unlimited data at full speed for 2 weeks at $22.99 or 30 days at $32.99, one payment, nothing renews. Three is £8 for every day you use the phone in Thailand, and it does not allow hotspot use there, a rule I would check before you rely on it.
Once the daily charge applies, your UK calls, texts and data run on your own number. There is nothing to install, and it lands on the bill you already pay. A phone with no eSIM slot works too, a point I would not dismiss. Ringo Light is data only.
Prices read on 31 October 2026: Three, European Central Bank, Ringo Light on their own sites or listings, Ringo Light from its catalogue. All in US dollars unless stated. Treat every number as a snapshot.
See the full price index for every country.
Travelling further? Compare the best eSIM for Asia and the eSIM for Asia-Pacific.
The prices, charted
Three is charged in pounds; dollar figures use the ECB reference rate of 30 October 2026, the latest published on 31 October, £1 = $1.34. Daily charges apply only on days the phone is used, so 14 days is the most they can cost for the fortnight. Ringo Light is priced in US dollars.
Three's pages list no 30-day pass, so 30 days is 30 times the daily charge, with the plan's data use abroad limited to 12GB a month under fair use. Dollar figures at £1 = $1.34, ECB reference rate of 30 October 2026. Ringo Light is one payment for 30 days.
Side by side
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- 7 days $6.99
- 2 weeks $22.99
- 30 days $32.99
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Three Go Roam vs Ringo Light in one paragraph
My answer for Thailand is Ringo Light on any trip longer than a couple of days, where it costs a fraction of Go Roam. Two weeks is $22.99 against about $150 of daily charges or about $113 for the 14-day pass, and a month is $32.99 against about $322. Go Roam wins on convenience, and I treat that as a genuine win. Calls and texts work on your own number, nothing needs installing, it is billed on the account you already pay, and it works on a phone with no eSIM slot. For one or two days of use the £8 daily charge adds up to less than Ringo Light's cheapest trip, and a 3-day pass at about $23 is level with it. For a normal holiday, or if you want to tether a laptop, I would buy Ringo Light.
Price: the same trip at each
On Three's roaming destinations page, which I read on 31 October 2026, Thailand sits in Go Roam Around the World Extra for Pay Monthly customers. The daily roaming charge in that band is £8 for customers who joined or upgraded on or after 18 December 2025, from 1 April 2026, and £7 for those who joined between October 2021 and 17 December 2025, so check which applies on your account. I priced the trip at £8. Passes bought in advance are £17.50 for 3 days, £29.75 for 5 days, £42 for 7 days and £84 for 14 days.
For dollars I used the ECB reference rate of 30 October 2026 (£1 = $1.34, the latest published on 31 October). Two weeks of daily charges comes to about $150 and 30 days to about $322. Ringo Light is priced in US dollars and the checkout shows the amount in your own currency before you pay. On two weeks the gap is $90.01 against the 14-day pass and $127.01 against daily charges.
Data and speed at each
A Go Roam daily charge on Three unlocks your UK calls, texts and up to 12GB of data for 24 hours, and 12GB is a fair use limit per month on your plan's own data. Three's FAQ says usage over it is subject to a surcharge. Hotspot use is not permitted in Around the World Extra destinations. If you plan to work from a laptop in Chiang Mai, I would treat that as the deciding line. The pages give no speed figure and say partner networks may be slower. Ringo Light is unlimited data at full speed for the whole trip, hotspot included. Fair use policy, see Terms.
Calls, texts and your own number
Three takes this row, and I have no quarrel with that. Your phone behaves as it does at home, so the same number rings, texts arrive as usual, and verification codes sent to that number keep reaching you. Ringo Light is data only. Calls go over apps that use data, and your number stays on your own SIM next to it. If your bank texts a code to your UK number while you are in Bangkok or Phuket, I would keep your own SIM active whichever you choose.
Setup and billing
Go Roam asks nothing of you. The charge begins when the phone is used in Thailand and appears on your Three bill, and a pass can be added in advance in your Three account. Ringo Light arrives by email after you pay and installs in one scan of the QR code. I would do the scan at home on Wi-Fi before the flight and switch the eSIM on for data when you land at Suvarnabhumi. The phone must support eSIM, which Go Roam does not require.
What Ringo Light is, and what it is not
I work for the company that sells Ringo Light, a data eSIM sold to fund the full Ringo, one plan that works everywhere. For Thailand it sells three trips, all unlimited data at full speed: 7 days at $6.99, 2 weeks at $22.99 and 30 days at $32.99. One payment, nothing renews.
What it is not: it has no phone number, so it does not replace your Three line for calls and texts, and it needs a phone with an eSIM slot. Three is simpler and keeps everything on one bill. Ringo Light is the lower price for the same time in Thailand, and for a full holiday that settles it for me.
The other travel eSIM brands for Thailand are in my comparison at /blog/best-esim-for-thailand. The card to buy Ringo Light is further up this page, just after the side-by-side table.
Which to pick
- ✓Ringo Light, for any trip beyond two days. The price is $22.99 for 2 weeks or $32.99 for 30 days, unlimited data at full speed, against £8 for every day of use on Three.
- ✓Three Go Roam, for a day or two with zero setup. Nothing to install, calls and texts on your own number, and £8 for each day used.
- ✓Three Go Roam, if your phone has no eSIM slot. It works on the plan already in the phone.
- ✓Both, for a long trip with a business line. Ringo Light for the data, and your own SIM for the calls and texts your number needs.
Pick by trip
Ringo Light, 2 weeks, $22.99, is my choice. Three's 7-day pass is about $56 and ten days of daily charges cost more.
I would buy Ringo Light at $22.99. The 14-day pass is about $113 and daily charges are about $150.
Ringo Light, 30 days, $32.99, unlimited at full speed for the laptop. Thirty days of daily charges would be about $322, and Three bars hotspot use there, so I would not pick it for this.
I would use Three Go Roam. Two £8 days, your own number and nothing to install.
Three Go Roam, as Ringo Light needs an eSIM-capable phone.
Frequently asked questions
How we compared, and our sources
Three, European Central Bank, Ringo Light, Ringo Light
We priced Three and Ringo Light for Thailand on 31 October 2026, all on the same day, in US dollars. Each rival's price comes from its own website where it showed dollars, otherwise from an esimdb.com listing, and every source and its date is listed below. Ringo Light's prices come from the catalogue our checkout charges.
We compare the trips people actually book: a week, two weeks and a month of unlimited data, and a 10 GB bucket. We read each brand's fair use and speed rules and quote them as the brands state them. We did not run speed tests, so this page makes no speed claims for any brand.
Ringo Light is our own product. We put it in the table on the same terms as everyone else, and where a rival is the better buy the page says so.
Left out: Other eSIM brands. Airalo, Holafly, Saily, Nomad and Ubigi sell Thailand too and are priced in the full comparison at /blog/best-esim-for-thailand. This page answers one question, Three or Ringo Light. Left out: Three Pay As You Go. Three's destinations page puts Thailand under Rest of the World for Pay As You Go customers, not in Go Roam, so this page prices the Pay Monthly daily charge and passes only.
- Three: www.three.co.uk/go-roam, Go Roam daily charges, the 12GB fair use limit and passes at three.co.uk/go-roam, Thailand in Around the World Extra at three.co.uk/support/roaming-and-calling-abroad/roaming-abroad/roaming-destinations, and the roaming FAQs, read 31 October 2026
- European Central Bank: www.ecb.europa.eu/stats/eurofxref/eurofxref-daily.xml, euro reference rates of 30 October 2026, the latest published on 31 October 2026, used for the dollar figures (£1 = $1.34)
- Ringo Light: ringoesim.com/thailand, the catalogue the checkout charges, read the same day
- Ringo Light: our own catalogue, the prices the checkout charges on 31 October 2026.
Written and priced by the Ringo team. Prices change often; if you spot one that has moved, tell us through the contact page and we will update the table.
