Sky Mobile 5G Coverage

Last updated 8th August, 2023

Sky Mobile’s 5G network currently has coverage in at least around 2,100 towns and cities at the time of writing, though coverage isn’t yet comprehensive in these places.

Sky launched its 5G service on January 16th, 2020, making it the third MVNO to do so (after BT Mobile and VOXI). It uses O2’s infrastructure, so its coverage matches O2’s – meaning as O2’s 5G coverage increases, so too will Sky’s.

Below you’ll find full details of Sky Mobile’s 5G network, including a list of the key places that its 5G is available, and how it compares to other 5G networks.

 Sky Mobile 5G Summary

How does Sky's 5G coverage compare to others?

We keep track of which networks offer 5G coverage across 120 major UK towns and cities, so you can see at a glance how they compare in key locations.

Sky Mobile has the same number of 5G locations as O2 below:

• O2 has launched 5G in 88 of the 120 locations below. 
• Three has launched 5G in 108 of the 120 locations below. 
• EE has launched 5G in 111 of the 120 locations below. 
• Vodafone has launched 5G in 82 of the 120 locations below. 

As noted above, coverage in most places isn’t comprehensive – in fact, it’s often quite patchy, and it can also differ inside and out. A tick on the chart below just means a network reports some amount of coverage in one of these towns or cities, so it’s worth using Sky’s official coverage checker to be sure the 5G coverage is in the bits you need.

Latest locations to get Sky Mobile 5G

The most recent places to get Sky Mobile 5G (via O2) as of August 2023 include Bromley, Canterbury, Enfield, Falkirk and Stirling, Harrow, Ilford, and Perth.

Sky Mobile coverage checker

Sky Mobile has an online coverage checker that will give you a detailed look at 5G coverage across the UK, as well as highlighting 4G, 3G and 2G coverage.

5G coverage is currently very limited, even in many of the towns and cities that have 5G at all, so it’s definitely worth checking your coverage before buying a 5G plan or 5G phone.

Check Sky 5G Coverage

4G coverage

Sky Mobile will continue to offer 4G (as well as 3G and 2G) coverage, so until 5G coverage is comprehensive, this remains important, as Sky will revert to these network technologies in places where 5G isn’t yet available.

Through O2, Sky Mobile has around 99% 4G coverage, which is comparable with rivals as you can see in the table below. It also has a similar amount of 3G and 2G coverage.

5G roaming abroad

You can’t currently roam abroad at 5G speeds on Sky Mobile, but it’s not alone there, as very few networks allow 5G roaming at the time of writing. However, on Sky Mobile you can roam in over 55 destinations at a cost of £2 per day, using 4G or 3G.

5G Network Speeds

We don’t have much data on Sky Mobile’s speeds specifically, but we do have some on O2’s, and they might well be similar, since the same infrastructure and spectrum is used.

Our main data there includes a report from RootMetrics in the second half of 2022, where it found that O2’s median 5G download speed was fairly slow compared to rivals at 71Mbps. It also found that O2’s 95^th percentile speed, which would be close to the highest speed you’re likely to get, was 258.2Mbps, and its 5^th percentile one, which would be close to the lowest, was 5.4Mbps, which as with the median don’t make for great results.

There’s also a RootMetrics report from the second half of 2020 though which shows a maximum download speed from O2 of 302.1Mbps, so that’s slightly better.

More recently, Opensignal tests published in April 2023 recorded an average 5G download speed of 75.0Mbps for O2. That’s a slower average than any other tested network achieved.

Speedtest/Ookla meanwhile in the first half of 2021 recorded O2’s median 5G download speed at 155Mbps, so there’s not total agreement there.

Finally, a Point Topic study from September 2020 states that O2’s average 5G download speed is 115.7Mbps, while its median 5G download speed is 103Mbps, and its maximum 5G download speed is 247Mbps.

Latency

Latency refers to how long a mobile network takes to respond to a request before it starts transferring data. It’s measured in milliseconds (ms) and a high latency can make even an otherwise fast network feel sluggish.

While Sky Mobile hasn’t detailed its 5G latency yet, we know that on 4G latency tends to be in the region of 30-50ms, and that eventually 5G could offer latency as low as 1ms. Right now though it’s likely to lie somewhere in the middle. Indeed, according to 2021 data from Ookla, O2’s median 5G latency is likely 31ms.

Sky Mobile’s 5G frequency allocation

Sky Mobile uses the same spectrum as O2, which means it’s relying on the 3.4GHz and 3.6GHz bands for 5G at the time of writing. Those bands are high frequency, which typically means there’s more capacity available, helping with things like reliability and large numbers of simultaneous connections.

With the huge numbers of connected devices around and ever-growing data demands, that’s important, especially for 5G.

The lower frequency bands listed in the chart above are mostly used for 4G, 3G, and 2G. These have different strengths, as they’re longer range and better at passing through obstacles.

Spectrum in the 700MHz band might be used for either 5G or 4G, but at the time of writing we’re not sure what Sky (through O2) will use it for. This spectrum was acquired at the second 5G spectrum auction, and while it’s not generally considered ‘5G spectrum’ as it’s too low frequency, it has been identified as a candidate for strengthening 5G networks.

As for how much 5G spectrum O2 (and by extension Sky) has, they currently have access to 40MHz of 3.4GHz spectrum and 40MHz of 3.6GHz spectrum (so 80MHz in total), which is identical to what EE has but marginally less than Vodafone’s holdings of 90MHz and a lot less than Three’s total of 140MHz.

But while some networks have more spectrum than O2, the network has at least arranged to trade some spectrum with Vodafone, allowing it to obtain a contiguous block for all 80MHz – something which can help improve the speed and latency of 5G services.

Those totals don’t include the 700MHz spectrum, since as explained that’s not conventionally thought of as 5G spectrum, but if you factor that in then Sky Mobile has 100MHz, EE has 120MHz, Three has 160MHz, and Vodafone still has 90MHz, as it doesn’t have access to any spectrum in the 700MHz band.

It’s possible that these totals will change over time, as there may yet be future 5G spectrum auctions.