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Compare Honor 400 Smart 5G Deals

Compare the latest Honor 400 Smart 5G deals from 2 UK networks. Filter by data, contract length and upfront cost, and plant trees with every switch.

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About the Honor 400 Smart 5G

The Honor 400 Smart 5G is an affordable way onto 5G without sacrificing battery life. It teams a tall 6.77-inch display with a dual rear camera and a standout 6500 mAh cell. Pay-monthly deals start from £10.99 a month, and every plan shows its price-rise schedule clearly.

Key takeaways

  • Tall 6.77-inch display for video and browsing
  • 5G connectivity for faster mobile data
  • Very large 6500 mAh battery
  • Dual rear camera with a 50MP main sensor
  • 128GB storage running Android 15

Honor 400 Smart 5G specifications

Display
6.77-inch (1610 x 720)
Storage
128GB
Main camera
50MP
Front camera
5MP
Battery
6,500 mAh
5G
Yes
Operating system
Android 15
Weight
189g
Memory card
No
Released
September 2025

Key features

  • 6.77-inch display
  • Dual rear camera
  • 5MP selfie camera
  • Large-capacity battery

How to pick your Honor 400 Smart 5G deal

The trick with a value 5G phone is to compare the genuine total, not the eye-catching monthly figure. A low rate hiding a hefty upfront charge can end up pricier than a steady tariff once you add it all up, so sort by effective monthly cost. Choose a data allowance that suits how you really use mobile internet, and a contract length you will be comfortable with. If your existing phone is holding up, a SIM-only plan is usually the cheaper route than a new agreement.

Honor 400 Smart 5G camera and display

The 6.77-inch display is one of the larger screens you will find at this price, with room to spare for streaming, gaming and reading. The dual rear camera, led by a 50MP main sensor, takes crisp, detailed photos in good light, which covers the bulk of everyday shooting. The 5MP front camera does the job for selfies and video calls. As with most budget phones, it is happiest in daylight and well-lit spaces rather than tricky low light.

Honor 400 Smart 5G performance and battery

Battery is where this phone really shines. The 6500 mAh cell is bigger than most rivals carry and should easily clear a full day, with many users reaching a second. At 189 g it stays manageable in the hand given the screen size. It runs Android 15 and adds 5G, so web pages, downloads and streaming load quickly where coverage allows. Performance suits everyday apps, navigation and casual gaming rather than the most demanding titles.

Honor 400 Smart 5G vs Honor 400 Pro

The Honor 400 Pro steps up to a 200MP triple camera, a sharper 50MP selfie setup, 512GB of storage and Honor AI features, all at a higher price. The 400 Smart 5G counters with a bigger 6500 mAh battery and a lower cost. Pick the Smart 5G for long battery life on a budget; choose the 400 Pro if photography and extra storage are your priorities.

How much storage does the Honor 400 Smart 5G need?

The 400 Smart 5G comes with 128GB and no memory-card slot, so the space you start with is fixed. For most people 128GB comfortably holds apps, photos and some offline media. If you download a lot of video or keep a big music collection on the device, keep an eye on what you store or use cloud storage to avoid running short.

Pros

  • Huge 6500 mAh battery for the money
  • 5G support at a budget price
  • Large 6.77-inch display
  • Dual 50MP-led camera, sharp in daylight

Cons

  • No memory-card slot to expand 128GB
  • Basic 5MP front camera
  • Not built for the most demanding games

Our verdict

The Honor 400 Smart 5G is a strong-value choice for anyone who wants 5G and serious battery life without stretching the budget.

Get your Honor 400 Smart 5G deal in 3 steps

Choose your deal

Select your ideal Honor 400 Smart 5G from trusted retailers. Filter by data, price and contract length to find your perfect match.

Get your PAC code

Keep your current number by texting 'PAC' to 65075. It's free and takes minutes.

Complete your order

Finish your application with your chosen retailer. Your new Honor 400 Smart 5G will be delivered and your number transferred automatically.

Eco impact

Our impact grows with you

Every successful switch through Switchity plants 2 trees through our verified reforestation partner, Ecologi. Our switchers have already captured over 5,240 kg of CO₂ and released nearly 26,986 kg of oxygen annually.

262 / 1000 trees26% to goal
Verified reforestation partner: Ecologi
Best Environmentally-Focused Comparison Platform 2026, SME News
2
Trees per switch
5,240+ kg
CO₂ captured
£25,000+
Customer savings

Honor 400 Smart 5G deals: FAQs

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Our community impact

Every switch through Switchity supports reforestation and saves our community money on their broadband.

262
Trees grown together
£25,000
Saved by community
£250
Typical yearly saving
738
Trees to go to goal
Claudia Constantin
Written by Claudia Constantin, Co-Founder & Managing EditorPublished