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Three guidance
INDEPENDENT GUIDE
Three — Plans, Coverage & Roaming
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About Three

Three UK is now part of VodafoneThree following the merger completed 31 May 2025, approved by the CMA in December 2024. Founded in 2003 by CK Hutchison Holdings as the UK's first all-3G network, Three grew into the unlimited-data specialist — launching 'The One Plan' (unlimited data) in 2010, years before rivals. Three holds more 5G spectrum than any other UK operator (140MHz in 3.4–3.6GHz) and consistently leads independent 5G speed tests.

Plans

We don't list live prices — they change frequently. Below we explain how each plan type works.

Three SIM Only plans (June 2025 restructure): Lite (no roaming, cheapest), Advanced, Value (Go Roam Europe: 49 destinations), Complete (Go Roam worldwide: 160+ destinations, Paramount+ included). All include unlimited calls and texts, 5G free, personal hotspot. Annual price rise: £1.80–£1.90/month each April (30-day rolling plans exempt).

Three Pay Monthly plans bundle handsets (iPhone, Samsung, Google Pixel) with airtime on 24 or 36-month device plans. Higher tiers add Go Roam. Three+ loyalty perks available. Can pay off device early and switch to SIM Only.

Three PAYG uniquely includes Go Roam in 71 destinations at no extra cost — one of the best PAYG roaming deals in the UK. Add-on packs valid 30 days. No credit check required. eSIM available on PAYG.

Three supports eSIM on iPhone XS+, Samsung Galaxy S20+, Google Pixel 3+. Activate via the Three app or QR code. eSIM Quick Transfer available on iPhone. PAYG eSIM also available.

Coverage & 5G

Three provides 99% population 4G coverage. 5G covers approximately 62% of the population across 450+ towns — but Three holds the most 5G spectrum and achieves the fastest 5G speeds. Under VodafoneThree, £11 billion pledged to reach 99% 5G Standalone coverage by 2030. Network sharing with Vodafone (MOCN) already active.

Roaming Abroad

Three's Go Roam: Value tier = 49 EU destinations; Complete tier = 160+ worldwide destinations (USA, Canada, Australia, India, UAE, and more). 12GB fair-use monthly data cap while roaming. PAYG customers get 71 destinations free.

Key Features

🚀

Fastest 5G

Three holds more 5G spectrum than any other operator — leads independent speed tests every year.

🌍

Go Roam 160+

Complete tier reaches 160+ worldwide destinations. PAYG includes 71 destinations free.

♾️

Unlimited Specialist

True unlimited data, no speed caps on eligible plans. UK's original unlimited network.

🎬

Paramount+ Included

Complete plans include a Paramount+ subscription at no extra cost.

📞

Three+ Perks

Loyalty rewards via the Three+ app — food, drinks, entertainment.

📲

eSIM + Quick Transfer

Full eSIM support including iPhone's Quick Transfer feature.

Strengths & Weaknesses

✓ Strengths

  • Fastest 5G speeds in the UK (most spectrum)
  • Go Roam in up to 160+ worldwide destinations
  • Unlimited data, no throttling on eligible plans
  • 5G and hotspot free on all plans
  • PAYG roaming in 71 countries

✕ Watch out for

  • 5G geographic coverage less wide than EE (62% vs 87%)
  • Annual price rise £1.80–1.90/month each April
  • Indoor coverage gaps in some areas
  • Daily roaming charges on Lite/Advanced tiers

Frequently Asked Questions

Does Three still have Go Roam?
+
Yes. Value plans include 49 EU destinations; Complete plans include 160+ worldwide (USA, Canada, Australia, India, UAE). PAYG customers get 71 destinations free. A 12GB per month fair-use data cap applies.
Is Three's 5G really the fastest?
+
Yes. Three holds 140MHz of 5G spectrum — more than any other UK operator — and leads Opensignal's January 2026 5G Download Experience award at approximately 187Mbps median.
What is VodafoneThree?
+
Three and Vodafone merged their UK operations on 31 May 2025 into VodafoneThree. Both brands continue operating separately with separate plans. Network integration (MOCN) is underway; £11 billion pledged for network investment by 2030.
How do I switch to Three?
+
Text PAC to 65075 for a free porting code within 60 seconds. Sign up with Three and provide the PAC code — your number transfers within one working day.
twelvesquid.online (twelvesquid.online) provides independent information about UK mobile networks. We are not affiliated with, endorsed by, or connected to O2, Three, EE, Vodafone, Tesco Mobile, Sky Mobile, Lebara, iD Mobile, VOXI, Asda Mobile, giffgaff, BT Mobile, or any other operator. We do not sell SIM cards, contracts, or devices. No specific pricing is displayed — tariffs change frequently; always verify current prices directly with the network. Calling our number or submitting our form reaches our independent guidance team only, never a network's support line. Network names and brand marks are trademarks of their owners, used solely to identify which network a page covers.

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