Compare All 8 UK Mobile Networks

Network	Type	4G	5G Coverage	EU Roaming	Rating	Guide
O2	MNO	99%	~70%	Free — all plans	4.4	Guide →
Three	MNO	99%	~62%	Value/Complete only	4.5	Guide →
EE	MNO	99%	87%+	Essentials Plus+	4.6	Guide →
Vodafone	MNO	99%	Growing	Xtra only	4.1	Guide →
Tesco Mobile	MVNO	99%	Via O2	Free — most plans	4.7	Guide →
Sky Mobile	MVNO	99%	Via O2	Check per plan	4.2	Guide →
Lebara	MVNO	99%	Via Vodafone	Free (EU+India)	4.3	Guide →
iD Mobile	MVNO	99%	Via Three	50 dest (eligible)	4.3	Guide →

Data reflects June 2026 publicly available information. Always verify directly with each network before making any decision.

Best network by priority

Free EU roaming on every plan

O2 — only major MNO. Also: Tesco Mobile (same network, usually cheaper), Lebara (EU + India), iD Mobile (50 destinations including USA/Canada/Australia on eligible plans).

Fastest 5G speeds

Three — 140MHz spectrum, ~187Mbps median (Opensignal Jan 2026). EE leads for widest 5G coverage at 87%+.

No annual price rises

Tesco Mobile (Clubcard Price plans), iD Mobile (SIM Only), Lebara. Three 30-day rolling plans also exempt.

Free international calls

Lebara — 50+ countries including India, Pakistan, USA, Nigeria on every plan, no add-on.

Best customer satisfaction

Tesco Mobile — Ofcom #1 multiple times, Uswitch Best Customer Service 5 consecutive years.

Widest worldwide roaming

Vodafone Global Roam (Unlimited Max Xtra): 84 countries. Three Go Roam Complete: 160+ destinations.

Unique features

Sky Mobile Piggybank (12-month data storage) and Mix plans (monthly allowance change). Three PAYG eSIM (unique in UK). O2 satellite coverage (UK first 2026).

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kogywall (kogywall.online) is a fully independent information and guidance website. We hold no affiliation, partnership, endorsement, or commercial relationship with O2, Three, EE, Vodafone, Tesco Mobile, Sky Mobile, Lebara, iD Mobile, or any of their parent companies including Virgin Media O2, VodafoneThree, BT Group, Sky UK (Comcast), Tesco plc, Currys plc, or Lebara Group. We do not sell SIM cards, mobile contracts, or devices. We do not access customer accounts, process payments, manage billing, or provide official technical support of any kind. All plan details, pricing and network features change frequently — always verify current information directly with the relevant network before making any decision. Network names, logos and trademarks are the property of their respective owners and are referenced here solely for the purpose of independent consumer information. kogywall operates under UK consumer information guidelines as an independent third-party guidance service only.

All 8 UK Networks — Side by Side