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Capacity: 128GB
Choose your plan
5GB
CLASSIC PLAN
-What's this?36 month contract
£30.00
UPFRONT
+
£27.86
MONTHLY
Total monthly cost increasing to:
From Apr 2027 bill
£30.36
From Apr 2028 bill
£32.86
Monthly cost breakdown:
£3.86 Device + £24.00 Airtime
5GB
PLUS PLAN
-What's this?36 month contract
£30.00
UPFRONT
+
£31.85
MONTHLY
Total monthly cost increasing to:
From Apr 2027 bill
£34.35
From Apr 2028 bill
£36.85
Monthly cost breakdown:
£3.86 Device + £27.99 Airtime
5GB
ULTIMATE PLAN
-What's this?36 month contract
£30.00
UPFRONT
+
£36.85
MONTHLY
Total monthly cost increasing to:
From Apr 2027 bill
£39.35
From Apr 2028 bill
£41.85
Monthly cost breakdown:
£3.86 Device + £32.99 Airtime
30GB
CLASSIC PLAN
-What's this?36 month contract
£30.00
UPFRONT
+
£30.86
MONTHLY
Total monthly cost increasing to:
From Apr 2027 bill
£33.36
From Apr 2028 bill
£35.86
Monthly cost breakdown:
£3.86 Device + £27.00 Airtime
30GB
PLUS PLAN
-What's this?36 month contract
£30.00
UPFRONT
+
£34.85
MONTHLY
Total monthly cost increasing to:
From Apr 2027 bill
£37.35
From Apr 2028 bill
£39.85
Monthly cost breakdown:
£3.86 Device + £30.99 Airtime
30GB
ULTIMATE PLAN
-What's this?36 month contract
£30.00
UPFRONT
+
£39.85
MONTHLY
Total monthly cost increasing to:
From Apr 2027 bill
£42.35
From Apr 2028 bill
£44.85
Monthly cost breakdown:
£3.86 Device + £35.99 Airtime
125GB
CLASSIC PLAN
-What's this?36 month contract
£30.00
UPFRONT
+
£35.86
MONTHLY
Total monthly cost increasing to:
From Apr 2027 bill
£38.36
From Apr 2028 bill
£40.86
Monthly cost breakdown:
£3.86 Device + £32.00 Airtime
125GB
PLUS PLAN
-What's this?36 month contract
£30.00
UPFRONT
+
£39.85
MONTHLY
Total monthly cost increasing to:
From Apr 2027 bill
£42.35
From Apr 2028 bill
£44.85
Monthly cost breakdown:
£3.86 Device + £35.99 Airtime
125GB
ULTIMATE PLAN
-What's this?36 month contract
£30.00
UPFRONT
+
£44.85
MONTHLY
Total monthly cost increasing to:
From Apr 2027 bill
£47.35
From Apr 2028 bill
£49.85
Monthly cost breakdown:
£3.86 Device + £40.99 Airtime
Unlimited
CLASSIC PLAN
-What's this?36 month contract
£30.00
UPFRONT
+
£40.86
MONTHLY
Total monthly cost increasing to:
From Apr 2027 bill
£43.36
From Apr 2028 bill
£45.86
Monthly cost breakdown:
£3.86 Device + £37.00 Airtime
Unlimited
PLUS PLAN
-What's this?36 month contract
£30.00
UPFRONT
+
£44.85
MONTHLY
Total monthly cost increasing to:
From Apr 2027 bill
£47.35
From Apr 2028 bill
£49.85
Monthly cost breakdown:
£3.86 Device + £40.99 Airtime
Unlimited
ULTIMATE PLAN
-What's this?36 month contract
£30.00
UPFRONT
+
£49.85
MONTHLY
Total monthly cost increasing to:
From Apr 2027 bill
£52.35
From Apr 2028 bill
£54.85
Monthly cost breakdown:
£3.86 Device + £45.99 Airtime
Features
Tech Specs
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50MP
Camera
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35W
Charging Times
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5G
Data Connectivity
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6.77 inch
Screen Size
Brand:
HONOR
Weight (g):
206g
Battery (eComm):
6500mAh
Processor:
Qualcomm SM6375Pro
Talk Time (hrs):
51
Dimensions (mm):
166.89 x 76.8 x 8.39
Eco Rating:
Resolution:
1610 * 720
Screen Size (inches):
6.77 Inch
Type of display:
LCD
Standby Time (hrs):
792
Operating System (eComm):
Android 15
Water Resistance (IP Rating):
IP54
Removable battery:
No
Expandable Storage:
No
Facial Recognition:
Yes
Fingerprint Recognition:
Yes
GPS:
No
NFC (eComm):
Yes
Wi-Fi:
Yes
Dual Sim:
Yes
FM Radio:
No
Sim Type (Nano etc):
2 x Nano SIM
Band Type:
NR/LTE TDD/FDD-LTE/WCDMA/GSM
Bluetooth:
Yes
Fast Charging:
Yes
Charger in box:
No
Wireless Charging (eComm):
No
Wi-Fi and 4G Calling:
Yes
Type of Audio Connector:
USB-C
Type Of Charger Connector:
USB-C
Audio:
2 Speakers
Flash:
Main
Video:
Maximum 1920x1080 pixels
Rear Camera (MP):
50MP
Front Camera (MP):
50MP
Music Player:
No
Why O2 ?
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A network you can trust
We're here for you whenever you need us. So you can stay connected to the people that matter.
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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
It was released on 29 August, 2025 and available to buy now at O2. Spread the cost on a Pay Monthly plan.
HONOR 400 Smart features a 6.77-inch LCD display with a 1610x720 resolution. Enjoy smooth performance for everyday apps, powered by Qualcomm SM6375Pro and 4GB RAM. 128GB storage offers plenty of room for apps, photos, and videos.
Stay powered up all day and beyond. Packed with a massive 6500mAh battery to deliver up to 65 hours talk time and 842 hours on standby. Plus, support for 35W fast charging via USB-C.
Choose from two stunning finishes in Velvet Black or Meteor Silver.
No, it's not. The IP54 waterproof rating offers some protection for dust and water such as splashes and rain.
It supports two nano-SIM cards, letting you manage two numbers on one device.
Choose from a range of HONOR 400 Smart Pay Monthly contracts, from pre-built plans to flexible ones to match your lifestyle. Access O2 perks like Priority gig tickets, exclusive offers, and O2 Extras.
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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