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Sky Mobile 4G Coverage and Network Review

16th October 2017

Sky Mobile Network

Sky Mobile is an MVNO which uses O2’s infrastructure. That means wherever O2 has signal Sky Mobile does too, which currently means 4G coverage for over 97% of the UK population outdoors.

You can expect those figures to grow rapidly, but coverage isn’t the main reason to pick Sky Mobile, as the network aims to stand out by offering roll over data – meaning that it you don’t use all your data one month you can add it to a future month, for up to three years.

The network also allows you to change between tariffs each month, even if you’re locked in to a contract. And if you’re already a Sky customer you can get a discount on plans.



Data roll over

Fairly low data limits

Flexible plans

No inclusive roaming beyond Europe

Low cost for Sky TV customers

No Pay As You Go

Our Rating


Sky Mobile has widespread 2G and 3G coverage. It’s 4G coverage is almost as comprehensive, but is a little behind EE at over 97% outdoors, which means you can get 4G in most locations.

Network Type Coverage by population
4G  97%
3G 98%
2G 99%

Use Sky’s coverage checker below to find out more about Sky 4G coverage in your area, including signal strengths and details on both indoor and outdoor coverage.

4G from O2 and by extension Sky Mobile is now available in well over 11,000 UK towns, cities and villages.

The major towns and cities include but are not limited to: Antrim, Bradford, Birmingham, Bournemouth, Bridgend, Brighton, Burnley, Castleford, Coleraine, Coventry, Edinburgh, Glasgow, Leeds, Leicester, Leigh, Liverpool, Livingston, Manchester, Newcastle, Sheffield, London, Macclesfield, Newtownabbey, Nottingham, Nuneaton, Pontypool, Poole, Portsmouth, Reading, St Albans, Sittingbourne, Southampton and Tamworth.

Recent locations to get an O2 (and by extension Sky Mobile) 4G upgrade include: Over 180 areas in Norfolk, as well as Ben Nevis and hundreds of other Scottish locations.

Network Speeds and Frequencies

Sky Mobile uses standard 4G, which is roughly 5 times faster than a typical 3G network. The network’s average 4G download speed is 18.48Mbit/sec, while its average 4G upload speed is 9.40Mbit/sec.

That’s not quite as fast as some rivals, but it’s still very quick, and is enough for smooth streaming, downloading and web browsing on your phone, so you can work and play wherever you are.

  • Average Download Speed: 18.48 Mbit/sec
  • Average Upload Speed: 9.40 Mbit/sec

As an O2 MVNO, Sky Mobile uses just the 800MHz band for 4G, where some networks use two or three different bands.

That makes it a bit limited, but it’s a good band to be limited to, as the 800MHz band is long range, so it can travel a long way between base stations, making it suited to rural environments.

And it’s also good at penetrating walls and buildings, making it great for built up areas as well, and ensuring strong coverage both indoors and out.

You can find in depth details of this band and others in our 4G frequencies guide.

  • 800MHz used for 4G
  • 900MHz used for 2G/3G
  • 1800MHz used for 2G
  • 2100 MHz used for 3G


Sky Mobile currently offers just a small number of Pay Monthly and SIM Only plans, detailed below. All plans come with 4G at no extra cost. All plans also allow you to roll over any unused data from one month to the next. There’s no limit to how much you can roll over, and you can store it for up to 3 years.

Pay Monthly Phone Plans



Max Data Allowance


Contract Length

12 or 24 months Months

View plans

Sky Mobile’s Pay Monthly plans come with a choice of 500MB, 1GB, 5GB or 10GB of data. Those data costs come in at £5, £10, £15 and £20 respectively each month, and you'll pay more on top of that for your phone.

If you’re a Sky TV customer you get unlimited calls and texts as well for free. If you’re not you can pay an additional £10 per month for unlimited calls and texts, or only pay for what you use, at a rate of 10p per minute and 10p per text.

You can also tether, using as much of your data allowance as you want, and Pay Monthly plans last either 12 or 24 months - though for a 12-month plan you'll pay more each month for the phone component.

SIM Only Plans



Max Data Allowance


Contract Length

12 Months

View Plans

Sky Mobile’s SIM Only plans also come with a choice of 500MB, 1GB, 5GB or 10GB of data. The basic price you pay (of £5, £10, £15 and £20 respectively) is just for that data, but if you’re a Sky TV customer you get unlimited calls and texts as well for free, while if you're not you'll pay extra at the rates highlighted above.

You can also tether on Sky Mobile, using as much of your data for it as you want.

Plans all last 12 months, but you can switch between them every 30 days if you need more or less data.

Data Only Plans – For Tablets and Dongles

Sky Mobile doesn’t currently offer any plans built specifically for data.

Pay As You Go

Sky Mobile doesn’t currently offer any Pay As You Go services.

Sky Mobile Roaming Destinations

Sky Mobile lets you use your full allowance of minutes, texts and data at no extra cost in all EU and EEA countries.

Outside the EU you can pay £5 per 24 hours to roam in Australia, Canada, Hong Kong, New Zealand, Qatar, South Africa, Switzerland, Thailand, Turkey and the USA.


Sky Mobile feels mostly built for Sky TV customers, giving you a huge saving on calls and texts if you subscribe to both.

However, it’s worth considering even if you get your entertainment elsewhere, as being able to roll over an unlimited amount of data is a big selling point that few networks can match. Being able to change your plan every month also makes Sky Mobile very flexible, however a lack of plans, fairly low data limits and no inclusive roaming beyond Europe holds it back.

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