Honor 400 Smart

Honor 400 Smart

The HONOR 400 Smart is designed for users who prioritise long battery life and everyday reliability over premium materials or advanced flagship features. It combines a large display, a high-capacity battery, and practical performance in a straightforward Read more >

Operating System Android
Camera 50 Megapixels
Display Size 6.77 inches
Capacity 128Gb
View full spec >

COMPARE O2 Honor 400 Smart DEALS

Honor 400 Smart SIM Free Deals

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Honor 400 Smart

Honor 400 Smart, 128GB Velvet Black

SIM Free

£169.00

Honor 400 Smart

Honor 400 Smart, 128GB Meteor Silver

SIM Free

£169.00

O2 Honor 400 Smart Deals

Colour:
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Storage:
Any
128GB
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Honor 400 Smart

Honor 400 Smart, 128GB Velvet Black

£24.86 per month

Total Cost: £1,097.46

Monthly Price increases to £27.36 on 1st April 2026 and to £29.86 on 1st April 2027 and to £32.36 on 1st April 2028

Free EU Roaming 3 Months Free Entertainment
5GB data
£30.00 device cost
Unlimited minutes
Unlimited texts
36 month contract
Honor 400 Smart

Honor 400 Smart, 128GB Meteor Silver

£24.86 per month

Total Cost: £1,097.46

Monthly Price increases to £27.36 on 1st April 2026 and to £29.86 on 1st April 2027 and to £32.36 on 1st April 2028

Free EU Roaming 3 Months Free Entertainment
5GB data
£30.00 device cost
Unlimited minutes
Unlimited texts
36 month contract
Honor 400 Smart

Honor 400 Smart, 128GB Velvet Black

£26.79 per month

Total Cost: £757.96

Monthly Price increases to £29.29 on 1st April 2026 and to £31.79 on 1st April 2027

Free EU Roaming 3 Months Free Entertainment
5GB data
£30.00 device cost
Unlimited minutes
Unlimited texts
24 month contract
Honor 400 Smart

Honor 400 Smart, 128GB Meteor Silver

£26.79 per month

Total Cost: £757.96

Monthly Price increases to £29.29 on 1st April 2026 and to £31.79 on 1st April 2027

Free EU Roaming 3 Months Free Entertainment
5GB data
£30.00 device cost
Unlimited minutes
Unlimited texts
24 month contract
Honor 400 Smart

Honor 400 Smart, 128GB Velvet Black

£27.86 per month

Total Cost: £1,205.46

Monthly Price increases to £30.36 on 1st April 2026 and to £32.86 on 1st April 2027 and to £35.36 on 1st April 2028

Free EU Roaming 3 Months Free Entertainment
25GB data
£30.00 device cost
Unlimited minutes
Unlimited texts
36 month contract
Honor 400 Smart

Honor 400 Smart, 128GB Meteor Silver

£27.86 per month

Total Cost: £1,205.46

Monthly Price increases to £30.36 on 1st April 2026 and to £32.86 on 1st April 2027 and to £35.36 on 1st April 2028

Free EU Roaming 3 Months Free Entertainment
25GB data
£30.00 device cost
Unlimited minutes
Unlimited texts
36 month contract
Honor 400 Smart

Honor 400 Smart, 128GB Meteor Silver

£29.79 per month

Total Cost: £829.96

Monthly Price increases to £32.29 on 1st April 2026 and to £34.79 on 1st April 2027

Free EU Roaming 3 Months Free Entertainment
25GB data
£30.00 device cost
Unlimited minutes
Unlimited texts
24 month contract
Honor 400 Smart

Honor 400 Smart, 128GB Velvet Black

£29.79 per month

Total Cost: £829.96

Monthly Price increases to £32.29 on 1st April 2026 and to £34.79 on 1st April 2027

Free EU Roaming 3 Months Free Entertainment
25GB data
£30.00 device cost
Unlimited minutes
Unlimited texts
24 month contract
Honor 400 Smart

Honor 400 Smart, 128GB Velvet Black

£32.58 per month

Total Cost: £448.46

Monthly Price increases to £35.08 on 1st April 2026

Free EU Roaming 3 Months Free Entertainment
5GB data
£30.00 device cost
Unlimited minutes
Unlimited texts
12 month contract
Honor 400 Smart

Honor 400 Smart, 128GB Meteor Silver

£32.58 per month

Total Cost: £448.46

Monthly Price increases to £35.08 on 1st April 2026

Free EU Roaming 3 Months Free Entertainment
5GB data
£30.00 device cost
Unlimited minutes
Unlimited texts
12 month contract
Honor 400 Smart

Honor 400 Smart, 128GB Velvet Black

£32.86 per month

Total Cost: £1,385.46

Monthly Price increases to £35.36 on 1st April 2026 and to £37.86 on 1st April 2027 and to £40.36 on 1st April 2028

Free EU Roaming 3 Months Free Entertainment
125GB data
£30.00 device cost
Unlimited minutes
Unlimited texts
36 month contract
Honor 400 Smart

Honor 400 Smart, 128GB Meteor Silver

£32.86 per month

Total Cost: £1,385.46

Monthly Price increases to £35.36 on 1st April 2026 and to £37.86 on 1st April 2027 and to £40.36 on 1st April 2028

Free EU Roaming 3 Months Free Entertainment
125GB data
£30.00 device cost
Unlimited minutes
Unlimited texts
36 month contract
Honor 400 Smart

Honor 400 Smart, 128GB Velvet Black

£34.79 per month

Total Cost: £949.96

Monthly Price increases to £37.29 on 1st April 2026 and to £39.79 on 1st April 2027

Free EU Roaming 3 Months Free Entertainment
125GB data
£30.00 device cost
Unlimited minutes
Unlimited texts
24 month contract
Honor 400 Smart

Honor 400 Smart, 128GB Meteor Silver

£34.79 per month

Total Cost: £949.96

Monthly Price increases to £37.29 on 1st April 2026 and to £39.79 on 1st April 2027

Free EU Roaming 3 Months Free Entertainment
125GB data
£30.00 device cost
Unlimited minutes
Unlimited texts
24 month contract
Honor 400 Smart

Honor 400 Smart, 128GB Meteor Silver

£35.58 per month

Total Cost: £484.46

Monthly Price increases to £38.08 on 1st April 2026

Free EU Roaming 3 Months Free Entertainment
25GB data
£30.00 device cost
Unlimited minutes
Unlimited texts
12 month contract
Honor 400 Smart

Honor 400 Smart, 128GB Velvet Black

£35.58 per month

Total Cost: £484.46

Monthly Price increases to £38.08 on 1st April 2026

Free EU Roaming 3 Months Free Entertainment
25GB data
£30.00 device cost
Unlimited minutes
Unlimited texts
12 month contract
Honor 400 Smart

Honor 400 Smart, 128GB Velvet Black

£39.35 per month

Total Cost: £1,619.10

Monthly Price increases to £41.85 on 1st April 2026 and to £44.35 on 1st April 2027 and to £46.85 on 1st April 2028

Free Roaming in 123 Destinations Free Entertainment for Life of Plan O2 Insure Ultimate Cover
15GB data
£30.00 device cost
Unlimited minutes
Unlimited texts
36 month contract
Honor 400 Smart

Honor 400 Smart, 128GB Meteor Silver

£39.35 per month

Total Cost: £1,619.10

Monthly Price increases to £41.85 on 1st April 2026 and to £44.35 on 1st April 2027 and to £46.85 on 1st April 2028

Free Roaming in 123 Destinations Free Entertainment for Life of Plan O2 Insure Ultimate Cover
15GB data
£30.00 device cost
Unlimited minutes
Unlimited texts
36 month contract
Honor 400 Smart

Honor 400 Smart, 128GB Meteor Silver

£39.86 per month

Total Cost: £1,637.46

Monthly Price increases to £42.36 on 1st April 2026 and to £44.86 on 1st April 2027 and to £47.36 on 1st April 2028

Free EU Roaming 3 Months Free Entertainment
Unlimited data
£30.00 device cost
Unlimited minutes
Unlimited texts
36 month contract
Honor 400 Smart

Honor 400 Smart, 128GB Velvet Black

£39.86 per month

Total Cost: £1,637.46

Monthly Price increases to £42.36 on 1st April 2026 and to £44.86 on 1st April 2027 and to £47.36 on 1st April 2028

Free EU Roaming 3 Months Free Entertainment
Unlimited data
£30.00 device cost
Unlimited minutes
Unlimited texts
36 month contract

Live deal insights

O2 contract deals — price snapshot

  • Average total cost: £870
  • Lowest total cost: £190
  • £0 upfront options: 0 deals
  • Typical contract length: 1 months
  • Average monthly (24-month): £45
  • Average data allowance: 68GB

Other networks for this model: Talkmobile, Three, Vodafone.

Last updated: 20 Feb 2026 from 64 live offers

The HONOR 400 Smart is designed for users who prioritise long battery life and everyday reliability over premium materials or advanced flagship features. It combines a large display, a high-capacity battery, and practical performance in a straightforward design that’s built for regular daily use.

This positioning makes it well suited to people who spend a lot of time on their phone for messaging, browsing, navigation, and media, and want a device that can comfortably last through long days without frequent charging.

HONOR 400 Smart: Display

The HONOR 400 Smart features a 6.77-inch LCD display with a Full HD+ resolution and a 120Hz refresh rate. The large screen size makes it comfortable for reading, scrolling, and watching video, while the higher refresh rate helps everyday interactions feel smoother than on standard 60Hz panels.

Although it uses an LCD panel rather than AMOLED, the display offers good brightness and clarity for everyday use, particularly indoors and in typical outdoor conditions.

HONOR 400 Smart: Camera

On the rear, the HONOR 400 Smart uses a dual-camera setup led by a 50MP main sensor, supported by a 2MP depth sensor for portrait-style shots. This setup is designed to cover common photography needs such as everyday photos, quick snapshots, and casual portraits.

While it isn’t positioned as a camera-focused flagship device, the camera system is well suited to regular use and social sharing, delivering consistent results without complex shooting modes. A front-facing camera handles selfies and video calls.

HONOR 400 Smart: Battery

Battery life is one of the strongest features of the HONOR 400 Smart. It includes a large 6,500mAh battery, which is designed to comfortably support heavy daily use without needing to recharge partway through the day.

This makes it particularly appealing for users who rely on their phone for navigation, streaming, and communication over long periods. Fast charging support helps reduce downtime when the battery does eventually need topping up.

HONOR 400 Smart: Size, Weight and Feel

The phone has a solid, practical build that prioritises durability over slimness. It also includes protection features aimed at handling everyday knocks and splashes, making it better suited to regular use without constant care.

HONOR 400 Smart: Performance

Performance is powered by the Snapdragon 6s Gen 3 chipset, which is designed for smooth everyday operation rather than demanding gaming workloads. It handles common apps, multitasking, and media playback reliably, while maintaining efficiency to support the phone’s long battery life.

Honor 400 Smart Specification

  • Operating System: Android
  • Camera: 50 Megapixels
  • Display Size: 6.77 inches
  • Display Type: TFT LCD
  • Capacity: 128Gb
  • eSIM Compatible: No
  • Weight: 189 grams
  • Resolution: 720 x 1610
  • Primary Camera: 50 Megapixels
  • Primary Camera Flash: LED flash
  • Secondary Camera: 5 Megapixels
  • Dimensions: 166.9 x 76.8 x 8.4 mm
  • Processor: Octa-core
  • Chipset: Qualcomm SM6375 Snapdragon 6s Gen 3
  • SIM Type: Nano-SIM
  • Bluetooth: 5.1 with A2DP, LE
  • WiFi: 802.11 a/b/g/n/ac
  • Battery: Li-Po 6500 mAh
  • IP Rating: IP64

Specifications are provided by the manufacturer and may vary by region.

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