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Honor 400 Smart vs Xiaomi Redmi 15 4G

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Honor 400 Smart

Starting at

£156.00
See options

Xiaomi Redmi 15 4G

Starting at

£262.00
See options
(1 review)

What's the difference between the Honor 400 Smart and Xiaomi Redmi 15 4G?

Honor 400 Smart vs Xiaomi Redmi 15 4G comes down to the RAM, battery and screen size. Refurbished, the Honor 400 Smart starts at £156, £106 less than the Xiaomi Redmi 15 4G.

Refurbished from

£156£262

RAM

4 GB6 GB

Battery

6500 mAh7000 mAh

Screen size

6.77 inch6.9 inch

Screen type

TFT LCDIPS LCD

Refresh rate

120 Hz144 Hz
  • The Xiaomi Redmi 15 4G has more RAM: 6 GB vs 4 GB.
  • The Xiaomi Redmi 15 4G has a bigger battery: 7000 mAh vs 6500 mAh.
  • Screen size: 6.77 inch on the Honor 400 Smart, 6.9 inch on the Xiaomi Redmi 15 4G.

Honor 400 Smart vs Xiaomi Redmi 15 4G specs

The Honor 400 Smart and Xiaomi Redmi 15 4G both bring solid features for everyday use, but they suit different priorities. The Honor 400 Smart offers 5G connectivity, a 6500 mAh battery, and a very high resolution main camera at 108 megapixels, ideal if you want faster networks and detailed photos. The Xiaomi Redmi 15 4G has a larger 7000 mAh battery, more RAM at 6 GB for smoother multitasking, a higher refresh rate screen at 144 Hz, and a Full HD+ resolution that makes for sharper and smoother visuals. It also supports expandable storage and includes a 3.5mm headphone jack, which the Honor does not. Choose Honor if 5G and camera detail are your priorities. Choose Xiaomi if you want a bigger screen, longer battery, and more memory for daily apps.

Honor 400 Smart vs Xiaomi Redmi 15 4G price

Colour

  • BlackSold out
  • PurpleSold out

Storage

  • 128GBSold out
  • 128GBSold out

Honor 400 Smart vs Xiaomi Redmi 15 4G battery life and software updates

Battery life, network compatibility and software updates shape how long a device stays useful and convenient.

Battery Capacity

The Honor 400 Smart has a 6500 mAh battery, which provides strong endurance for a full day of typical use. The Xiaomi Redmi 15 4G has an even larger 7000 mAh battery, which is suited to users who want the longest possible battery life between charges, especially if you spend a lot of time away from power sources.

Network Technology

The Honor 400 Smart supports 5G networks, offering faster data speeds where 5G coverage is available. The Xiaomi Redmi 15 4G works on 4G networks, which are widely available and reliable. If you want access to the newest network speeds, the Honor is the choice, while the Xiaomi covers everyday mobile data needs well.

Software Updates

This makes either phone a good choice for staying up to date over time.

Battery

6500 mAh7000 mAh

Foldable

NoNo

Year of release

20252025

Honor 400 Smart vs Xiaomi Redmi 15 4G performance

The chipset and memory determine how smoothly a device runs apps and handles multitasking. Both phones use the same Snapdragon 685 chipset, but their RAM and storage options offer different experiences.

RAM Size

The Honor 400 Smart comes with 4 GB of RAM, suitable for everyday app use and light multitasking. The Xiaomi Redmi 15 4G includes 6 GB of RAM, which helps keep more apps open and running smoothly at the same time, fitting users who switch frequently between applications or use memory-intensive apps.

Storage Capacity

Both phones are available with 128 GB of internal storage. This amount is good for storing apps, photos, and media without immediate need for additional space.

Chipset

Qualcomm SM6225 Snapdragon 685 (6 nm)Qualcomm SM6225 Snapdragon 685 (6 nm)

RAM

4 GB6 GB

Honor 400 Smart vs Xiaomi Redmi 15 4G screen

Screen size, resolution and refresh rate affect how clear and smooth visuals look. Both phones have large screens for comfortable viewing, but their qualities make them fit different user preferences.

Screen Size and Resolution

The Honor 400 Smart has a 6.77 inch screen with 720 x 1610 resolution, which is well suited for watching videos and general use without demanding very high pixel density. The Xiaomi Redmi 15 4G offers a larger 6.9 inch screen and a Full HD+ resolution of 1080 x 2340, delivering sharper images and more detail for users who value screen clarity.

Refresh Rate

The Honor 400 Smart refreshes the screen at 120 Hz, which makes scrolling and animations smooth. The Xiaomi Redmi 15 4G has a higher 144 Hz refresh rate, providing an even smoother experience, particularly noticeable in gaming or fast-moving content.

Screen Type

Honor 400 Smart uses a TFT LCD screen, which is generally bright and clear. The Xiaomi Redmi 15 4G uses an IPS LCD screen, known for wider viewing angles and more consistent colour reproduction, which benefits those who watch media or share their screen with others.

Refresh rate

120 Hz144 Hz

Resolution

720 x 16101080x2340

Screen size

6.77 inch6.9 inch

Screen type

TFT LCDIPS LCD

Honor 400 Smart vs Xiaomi Redmi 15 4G camera

Camera quality and audio connections influence how well you capture moments and enjoy media. The two phones share some features but differ in camera detail and headphone options.

Main Camera Megapixels

The Honor 400 Smart features a 108 megapixel main camera, which captures more detail and can be better for cropping or printing large photos. The Xiaomi Redmi 15 4G has a 50 megapixel main camera that provides good image quality for everyday photography.

Front Camera

Both phones have an 8 megapixel front camera, suitable for clear selfies and video calls.

Audio Connector

The Honor 400 Smart includes both a USB-C port and a 3.5mm headphone jack, allowing wired headphones without an adapter. The Xiaomi Redmi 15 4G has a USB-C port only, which works with wireless or USB-C headphones.

Front camera

8 megapixels8 megapixels

Main camera

108 megapixels50 megapixels

Honor 400 Smart vs Xiaomi Redmi 15 4G size and design

Additional features like size, weight, SIM options, and expandable storage can affect daily convenience and comfort. The two phones provide different mixes of these extras.

Expandable Storage

The Xiaomi Redmi 15 4G supports microSDXC cards, so you can add extra storage as needed. This suits users who save many photos, videos or files. The Honor 400 Smart does not have expandable storage.

Network SIM Options

Both phones offer dual physical SIM slots, letting you use two separate phone numbers or carriers at once, which is useful for balancing work and personal calls or using local SIMs while travelling.

Dimensions and Weight

The Honor 400 Smart measures 166.9 mm in height, 76.8 mm in width, and weighs 208 g, making it slightly smaller and lighter than the Xiaomi Redmi 15 4G, which is 171.1 mm tall, 82.1 mm wide, and weighs 217 g. This makes the Honor easier to handle for those preferring a more compact phone.

Carrier compatibility

UnlockedUnlocked

Connector

USB-C + Jack 3.5mmUSB-C

Depth

8.4 mm8.6 mm

Height

166.9 mm171.1 mm

Mobile network

5G4G

SD card slot

NomicroSDXC

SIM card

Dual Physical SIMDual Physical SIM

Weight

208 g217 g

Width

76.8 mm82.1 mm

Honor 400 Smart or Xiaomi Redmi 15 4G: which should you buy?

Buy the Honor 400 Smart if

  • you want to spend less: it starts at £156, £106 less than the Xiaomi Redmi 15 4G
  • you want a higher-resolution main camera (108 megapixels vs 50 megapixels)
  • you want 5G

Buy the Xiaomi Redmi 15 4G if

  • you want more RAM (6 GB vs 4 GB)
  • you want a bigger battery (7000 mAh vs 6500 mAh)
  • you want a smoother screen (144 Hz vs 120 Hz)

Honor 400 Smart vs Xiaomi Redmi 15 4G FAQs

Honor 400 Smart vs Xiaomi Redmi 15 4G comes down to the RAM, battery and screen size. The Xiaomi Redmi 15 4G has more RAM: 6 GB vs 4 GB. The Xiaomi Redmi 15 4G has a bigger battery: 7000 mAh vs 6500 mAh.

The Honor 400 Smart is cheaper refurbished, from £156 compared with £262 for the Xiaomi Redmi 15 4G.

The Xiaomi Redmi 15 4G has a bigger battery: 7000 mAh vs 6500 mAh.

The Honor 400 Smart has a higher-resolution main camera: 108 megapixels vs 50 megapixels.

Both come in 128GB refurbished.

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