Q1
Best network for HA12?
EE leads with 92/100 — driven by 83% 5G and 100% 4G in this densely populated urban part of Harrow.
HA12 DISTRICT · HARROW
Best mobile network in HA12 Harrow postcode district
EE scores 92/100 — the top-ranked UK network for HA12 in Harrow. 83% 5G · 100% 4G coverage. Data: Ofcom Connected Nations 2024.
RESULT · HA12 · HARROW
Coverage for HA12 district
★ BEST OPERATOR
EE
92/100
EE delivers the strongest coverage for the HA12 district in Harrow. Scored across 5G, 4G and 3G using the latest UK operator footprint data.
Full ranking — HA12
#1
EE
#2
Three
#3
O2
#4
Vodafone
Coverage analysis — HA12
Comparing Ofcom-verified operator coverage footprints, EE delivers the strongest signal in Harrow. In this densely populated urban area, EE achieves an overall coverage score of 92/100 — driven by strong 5G coverage (83%) and rock-solid 4G at 100%. 5G and 4G scores are closely matched, reflecting a mature, stable network.
EE comfortably leads Three by 5 points overall. While Three reaches 75% on 5G and 100% on 4G in Harrow, it falls short of EE's combined performance across all bands. O2 and Vodafone round out the field at 84 and 84 respectively.
Why EE for HA12?
EE's 5G rollout in Harrow is among the strongest nationally, covering 83% of premises in the HA12 district. For anyone streaming video, gaming on mobile, or relying on a mobile hotspot at home, this level of 5G penetration makes a real difference to day-to-day speed.
The runner-up in HA12 is Three at 87/100 (75% 5G / 100% 4G). The margin is noticeable but not enormous. EE edges ahead on 5G depth; if your plan is with Three, 4G performance should still be solid.
Best phone deals from EE
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Explore the Harrow area
View full coverage analysis for the Harrow (HA) area, or enter any UK postcode in the scanner above for a personalised result.
Coverage FAQ — HA12
Q2
Is 5G available in HA12?
EE provides strong 5G coverage at 83%. Three follows at 75%.
Q3
Which network has the best 4G?
EE leads 4G too at 100%. Reliable 4G is critical in densely populated urban areas.
Q4
Is O2 worth considering?
O2 scores 84/100 in HA12 (67% 5G, 100% 4G). It may suit certain tariff or price preferences despite trailing the top two.