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Choose your plan
40GB
CLASSIC PLAN
-What's this?36 month contract
£24.50
MONTHLY
Total monthly cost increasing to:
From Apr 2027 bill
£25.25
From Apr 2028 bill
£26.00
Monthly cost breakdown:
£12.50 Device + £12.00 Airtime
OFFER
Lowest ever monthly cost. Ends 6 May.
06
Days
03
Hours
25
Mins
Unlimited
CLASSIC PLAN
-What's this?36 month contract
£40.50
MONTHLY
Total monthly cost increasing to:
From Apr 2027 bill
£41.25
From Apr 2028 bill
£42.00
Monthly cost breakdown:
£12.50 Device + £28.00 Airtime
OFFER
Lowest ever monthly cost. Ends 6 May.
06
Days
03
Hours
25
Mins
5GB
CLASSIC PLAN
-What's this?36 month contract
£24.50
MONTHLY
Total monthly cost increasing to:
From Apr 2027 bill
£25.25
From Apr 2028 bill
£26.00
Monthly cost breakdown:
£12.50 Device + £12.00 Airtime
150GB
CLASSIC PLAN
-What's this?36 month contract
£34.50
MONTHLY
Total monthly cost increasing to:
From Apr 2027 bill
£35.25
From Apr 2028 bill
£36.00
Monthly cost breakdown:
£12.50 Device + £22.00 Airtime
Why O2 ?
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Here to help you
Get help with your device. Find the answers to your questions on our help and support pages. Get help with your device, O2 account and more.
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Get Priority
From unique prize draws to unforgettable moments. Priority gives you invite-only access to gigs, perks and experiences.
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My O2
Check your bill, view your balance, add Bolt Ons and more. Anytime, anywhere.
FAQs
Stay connected on O2's expansive network. M3 delivers strong mobile WiFi signal, connecting devices up to 1,000 square feet — so you can take broadband wherever you go. 5G speeds up to 2.5Gbps support super-fast downloads, streaming and gaming. Network coverage and download speed may vary on the area, but the external antenna ports enable extended coverage for larger buildings or remote areas.
At 105mm (4.14 inches) in width and depth, 21.5mm (0.85 inches) in height, and weighing just 256g (0.56lbs) with the battery—M3 is the perfect lightweight travel companion for trips away or remote work.
Stay connected throughout the day with up to 13 hours of battery life, depending on usage. Fast charge the 5400 mAh battery via USB-C.
Yes, you can. Connect up to 32 multiple devices at the same time on a private network, without draining your battery.
No, there isn't. M3 comes with a 2.4 inch LCD color screen. Check out the Nighthawk M6 for a touch screen display.
Enjoy a USB-C port and 2 external antenna ports (TS-9 connector) on the M3.
A nano SIM card. Choose an O2 data plan for your mobile broadband device, and you'll receive everything you need to get up and running in no time.
The legal bit
Custom plans
Direct purchases only. Pay the cash price for your device or spread the cost over 3 to 36 months (excludes dongles). Certain device costs available to be spread over 3 to 48 months. The cost of your Device will be the same however long you choose. There may be an upfront cost. For customers who took out an O2 Refresh custom plan on or after 17 December 2021, your Airtime Plan and Device plans unlink after 24 months. This means that if you are in the first 24 months of your Device Plan you will have to pay off your Device Plan in full if you decide to end your Airtime Plan. After 24 months you can: keep your Airtime and Device Plans without changing anything Cancel your Airtime Plan and keep paying off your Device Plan instalments or, Cancel your Airtime Plan and pay off your Device Plan in full. For customers who took out an O2 Refresh custom plan before the 17 December 2021 the Airtime and Device Plans remain linked for the duration of the Device Plan, this means you will have to pay off your Device Plan in full if you decide to end your Airtime Plan at any point.
UK calls/texts to standard UK landlines and mobiles and when roaming in our Europe Zone. Fair Usage policy applies. Special and out of bundle numbers chargeable. 4G phone required to access 4G. 4G available in selected areas.
Change your airtime tariff after 30 days and then once every billing month during your minimum contract period, choosing from a selected family of tariffs. Some tariff extras are only available on the starting tariff, are not transferable, and may be lost if you change to an ineligible tariff. Devices are subject to availability.
0% APR. Finance subject to status and credit checks, 18+, Direct Debit. Credit provided by Telefonica UK Ltd, 500 Brook Drive, Reading, RG2 6UU, UK. Terms apply, see o2.co.uk/terms.
Get Unlimited Data
Unlimited Data available on O2 Custom Plans on selected handsets and selected SIM Only tariffs. Fair use policy applies, personal and non-commercial usage only. This policy asks that you only use our services or SIM cards for private, personal and legitimate consumer purposes, and not for business purposes. See more at www.o2.co.uk/fair-usage-policy. If you regularly use 650GB of data per month or tether 12 or more devices we may consider this to be non permitted use and have the right to move you to a more suitable plan. EU roaming capped at 25GB per month. For full terms see www.o2.co.uk/terms.
Subject to Annual Price Increase
Monthly price of your Airtime Plan will increase by £2.50 each April, except Data Only and Smartwatch Plans which will increase by 75p. Out of bundle charges increase by 5% every 1 April.
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