⚖️ Comparison · Updated for 2026

4G LTE vs 5G

Side-by-side comparison, when-to-use-each guide, and instant conversion. Reviewed for 2026.

Quick answer: 4G UK average speed: 35-50 Mbps. 5G UK average speed: 150-300 Mbps (sub-6 GHz) or 1,000+ Mbps (mmWave, limited UK deployment). For most users in 2026, 4G is fast enough for any mobile task. 5G's main advantage is reduced latency (5-10ms vs 30-50ms) and massive device density — critical for smart cities and IoT.
Decision guide — when to use which
Use 4G LTE when…

Existing device without 5G, areas without 5G coverage (still much of rural UK land area).

Use 5G when…

Urban areas, 5G-compatible device, heavy streaming/downloads on mobile, remote working on the go.

📊 Side-by-side comparison
Aspect 4G LTE 5G
UK average speed 35-50 Mbps 150-300 Mbps (sub-6) / 1000+ (mmWave)
Latency 30-50ms 5-10ms
UK population coverage 99% ~94-97% outdoors (at least one operator; less on any single network)
Battery impact Standard Higher (improving)
Device requirement Any smartphone post-2014 5G chipset required

Frequently asked

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Is 5G worth upgrading for in 2026?

If your phone is due for replacement anyway, yes — 5G is now standard in mid-range phones at no premium. If you're happy with your phone, 4G is sufficient for all consumer use cases: streaming 4K video needs only 25 Mbps.

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Does 5G cause health problems?

No. 5G uses non-ionising radio frequency radiation — the same type as 4G, 3G, Wi-Fi and FM radio. The WHO has found no evidence of health effects from RF fields below international safety guidelines. 5G's frequencies don't have the energy to break chemical bonds.

Reviewed for 2026. This comparison is general guidance based on publicly available information. Prices, rates, rules and specifications change, so check current details with the provider or an official source before making a decision. Built by a UK-based qualified primary teacher and FA Level 2 coach as part of 247QuickTools' free utility-tools project. We don't sell SEO links or accept paid placements in this content.

Frequently asked questions

Is 5G worth upgrading for in 2026?

If your phone is due for replacement anyway, yes — 5G is now standard in mid-range phones at no premium. If you're happy with your phone, 4G is sufficient for all consumer use cases: streaming 4K video needs only 25 Mbps.

Does 5G cause health problems?

No. 5G uses non-ionising radio frequency radiation — the same type as 4G, 3G, Wi-Fi and FM radio. The WHO has found no evidence of health effects from RF fields below international safety guidelines. 5G's frequencies don't have the energy to break chemical bonds.