Three, O2, EE, Tesco Mobile, Sky Mobile, iD Mobile, Vodafone — plus the retailers that sell them, like Carphone Warehouse. Fresh 2026 data, no pricing, no affiliation.
Most comparison sites only cover the seven networks. We've added Carphone Warehouse — because where you buy from matters too.
27M customers · Go Roam 163 countries · new plans speed-capped from April 2026
£700m Mobile Transformation Plan · satellite now on Pixel + Galaxy S25 · free EU roaming
UK's #1 — 11th consecutive umlaut win · 5G+ Standalone · Apple One bundle
5× Uswitch Best Service · Clubcard frozen prices · runs on O2
Piggybank rollover (12 months) · bundles with Sky TV/Broadband · runs on O2
2.3M+ subscribers · owned by Currys plc · no annual CPI/RPI rises on SIM Only
UK's 2nd-ranked network · part of VodafoneThree · strong business roaming
Now an online-only Currys brand · sells Vodafone, iD Mobile, VOXI · standalone stores closed 2020
Carphone Warehouse doesn't run a network — it sells contracts on EE, O2, Vodafone, Three, and its own iD Mobile. Knowing the difference helps you pick the right combination.
O2's £700m Transformation Plan and EE's 11-year test-leading streak, compared honestly using only named independent sources.
O2 free up to 25GB across 40+ countries. Three's Go Roam reaches 163. Sky Mobile charges daily instead.
Carphone Warehouse, Currys, and similar retailers sell contracts but don't own infrastructure — see what that means for support.
PAC to 65075 — free, within 60 seconds. Full Ofcom rights, including the 2025 pounds-and-pence rule.
The UK's only direct-to-mobile satellite service — now on Pixel and Galaxy S25, with iPhone added 28 May 2026.
Currys plc's own MVNO — 2.3M+ subscribers, data rollover, and a 50-destination roaming allowance.
New masts, small cells, and spectrum upgrades through 2026 — built with Ericsson and Nokia, prioritising railways, roads, and dense urban areas.
Read the full O2 profile →All 531 standalone stores closed in 2020. It's now Currys' online mobile storefront, with trained staff inside Currys branches.
Read the full retailer profile →No pricing — visit official sites for current plan costs.
| Network / Retailer | Type | 5G headline | EU Roaming | Strongest at | 2026 key fact |
|---|---|---|---|---|---|
| Three Mobile | MNO | 187 Mbps peak; new plans capped 100 | 163 countries | Widest worldwide roaming | 27M; VodafoneThree merger |
| O2 | MNO | £700m Transformation Plan; satellite | 25GB free | Coverage award, 2 years running | Satellite now supports Pixel + S25 |
| EE | MNO | 5G+ Standalone, uncapped | Essentials Plus+ | 11-year independent test leader | 920/1,000 all-time record |
| Tesco Mobile | MVNO | Runs on O2's 5G network | 48 destinations | Customer service satisfaction | 5-year service award streak |
| Sky Mobile | MVNO | Runs on O2's 5G network | Daily charge | Data rollover + Sky bundling | Piggybank now 12-month rollover |
| iD Mobile | MVNO | Runs on Three's 5G network | Up to 50 destinations | Wide worldwide roaming | 2.3M+ subscribers; Currys-owned |
| Vodafone | MNO | VodafoneThree network | Varies by tier | Business and enterprise roaming | 808/1,000 — UK's 2nd-ranked |
| Carphone Warehouse | Retailer | N/A — sells contracts, no own network | Depends on chosen network | In-person help via Currys stores | Standalone stores closed 2020 |
Updated for 2026, covering networks and the retailers that sell them.
Masscodeem (masscodeem.online) is an independent information and guidance website covering UK mobile networks and retailers. We are not affiliated with, endorsed by, or connected to Three Mobile, VodafoneThree, O2, Virgin Media O2, Telefonica UK Limited, EE, BT Group, Tesco Mobile, Tesco PLC, Vodafone Group, Sky Mobile, Sky UK, iD Mobile, Currys plc, Carphone Warehouse, Giffgaff, SMARTY, Lebara, VOXI, or any other UK mobile network operator, MVNO, or retailer. Brand names and colours are referenced solely for educational identification. We do not sell mobile plans, display pricing, earn commission, or accept advertising from operators or retailers. All content is for general guidance only — always verify current details and pricing at the official network or retailer website before making any decision.