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Xiaomi Redmi 15

Xiaomi Redmi 15 128GB deals

The Xiaomi Redmi 15 is in our catalog but no UK retailer currently stocks it.

Expert reviews 3.7 (1)
NotebookCheck 73/100
View all reviews
Spec scores £200-£399 Phones · 164 phones
Performance 0.6 /5
Display 2.8 /5
Rear Camera 1.5 /5
Front Camera 1.8 /5
Battery 4 /5
View full breakdown

Color

All

Black

Storage

All

128GB

256GB

Budget buyers who want the longest possible battery life and a large display for media consumption without spending more than £200.

Xiaomi Redmi 15 Voucher Codes & Offers (2)

Xiaomi
10% off

Xiaomi 17T Series

See details

Pre-Heat Exclusive Benefits: - 10% OFF Voucher (Code：XM17tS) - 100 Mi Points - Free 90W Charger

Exclusive

Terms: The 90W Charger will ONLY be available for customers who claim it during the pre-heat period. Once the official launch starts, the charger will no longer be offered as a free gift.

No code needed Use offer

Ends 28 May 2026

Xiaomi
10% off

Xiaomi 17T series 100 Mi Points Free 90W Charger- 10% OFF voucher

See details
Warm up period

Terms: (Only available during the warm-up period)

XM17tS
Use offer

Ends 28 May 2026

Xiaomi Redmi 15 SIM Free (1 deals)

Filters

Grade B 5G
Redmi 15

Redmi 15 128GB (Black)

SIM Free

£249.00

More Details

Go To Deal

Sold by Back Market

Cost breakdown

Cashback:

£0.00

Upfront Cost:

£249.00

About the Xiaomi Redmi 15

The Redmi 15 is Xiaomi's ultra-affordable workhorse for 2025, built around a massive 7,000mAh battery that redefines what budget phones can offer in terms of endurance. Starting at just £159 in the UK, it delivers genuinely impressive stamina that can stretch to two full days of moderate use, and can even double as a power bank thanks to 18W reverse charging. The 6.9-inch IPS LCD display is the largest in its class, running at a smooth 144Hz refresh rate at Full HD+ resolution, making it excellent for videos, social media, and casual gaming. The Qualcomm Snapdragon 685 chipset handles everyday tasks without issue, and the 50MP dual camera takes respectable photos in good light. Xiaomi has added IP64 splash resistance, Gorilla Glass 3 protection, and a practical matte plastic design that feels sturdy in hand. With storage options up to 256GB and expandable memory, the Redmi 15 is a no-nonsense phone for buyers who value battery life and screen size above all else, proving you do not need to spend much to get a genuinely useful smartphone experience.

Expert Rating

3.7
(1 review)
NotebookCheck
73/100

Price History

Tracking the best prices since 4 May 2026.

Redmi 15 vs Redmi 14C — Key Differences

Feature Xiaomi Redmi 15 Redmi 14C
Display 6.9-inch IPS LCD, 144Hz, FHD+, Gorilla Glass 3 6.88-inch IPS LCD, 120Hz, HD+, Gorilla Glass 3
Chipset Qualcomm Snapdragon 685 MediaTek Helio G81 Ultra
Camera system 50MP main + secondary sensor, 8MP front 50MP main, 13MP front
Battery 7,000mAh with 33W charging + 18W reverse 5,160mAh with 18W charging
Build / Design Matte plastic, IP64 splash resistance Glass/plastic, no official IP rating
Storage options 128GB / 256GB with microSD 128GB / 256GB with microSD
SIM-free price Not available From £89.98

Frequently Asked Questions

Is the Redmi 15 worth buying?
The Redmi 15 is an outstanding choice if battery life is your top priority. Its 7,000mAh battery easily outlasts almost every phone in any price bracket, and the large 144Hz display is a bonus at this price. At £159, it is hard to find better value for a phone that simply works reliably day after day.
How good is the Redmi 15 camera?
The 50MP main camera produces decent photos in good lighting with reasonable detail and colour accuracy. It handles social media shots and casual photography well enough, though low-light performance is limited compared to pricier phones. The 8MP front camera is adequate for video calls and selfies.
Does the Redmi 15 have 5G?
The base Redmi 15 uses the Snapdragon 685 chipset and is 4G only. If you need 5G connectivity, Xiaomi offers a Redmi 15 5G variant powered by the Snapdragon 6s Gen 3, though it may be priced slightly higher. Check which variant is available from your chosen retailer.
Can the Redmi 15 be used as a power bank?
Yes, the Redmi 15 supports 18W reverse wired charging, allowing you to charge other devices like earbuds, smartwatches, or even another phone using the Redmi 15's enormous 7,000mAh battery. This is a genuinely practical feature for travel or emergencies.
How long does the Redmi 15 battery actually last?
With a 7,000mAh battery, the Redmi 15 can comfortably last two days under moderate use. Even heavy users will get through a full day without concern. The 33W charging speed means a full recharge takes a little over an hour, which is reasonable given the enormous capacity.
How does the Redmi 15 compare to the Redmi 14C?
The Redmi 15 is a major step up from the Redmi 14C in almost every way. It has a much larger 7,000mAh battery versus 5,160mAh, a faster 144Hz display versus 120Hz, 33W charging versus 18W, IP64 splash resistance, and 18W reverse charging. The Redmi 14C costs less but feels like a generation behind. Compare Redmi 14C deals.
Compare Redmi 14C deals

Xiaomi Redmi 15 Specifications

Spec Scores

£200-£399 Phones · 164 phones

  • Snapdragon 6s Gen 3
  • Octa-core (2x2.3 GHz Cortex-A78 & 6x2.0 GHz Cortex-A55)
164 phones in this group →
This phone
11%
Avg
35%
Best
99%
598 phones in catalog →
This phone
11%
Avg
45%
Best
100%

Based on calibrated CPU benchmark rankings (60%) and GFXBench GPU scores (40%). Apple chipsets included via editorial calibration since AnTuTu under-represents Apple's architecture.

  • 6.9 inches
  • 1080 x 2340 pixels
  • IPS, 144Hz, 850 nits peak
164 phones in this group →
This phone
56%
Avg
62%
Best
97%
598 phones in catalog →
This phone
56%
Avg
60%
Best
100%

Based on panel type (LTPO is the modern flagship gold standard), resolution, refresh rate, peak brightness, screen size, and HDR10+ / Dolby Vision support. Marketing peak-brightness claims are capped at 3500 nits to prevent inflation.

  • Single camera setup
  • 50 MP main camera
  • 1080p video recording
164 phones in this group →
This phone
29%
Avg
34%
Best
73%
598 phones in catalog →
This phone
29%
Avg
39%
Best
90%

Based on main-sensor size (1-inch / 1/1.3" beats 1/2.0"), telephoto reach (periscope > 5x > 3x optical), image processing tier (Apple Pro, Pixel Pro, Galaxy Ultra, Honor Magic Pro, Xiaomi Ultra), pro video features (ProRes, Apple Log, Dolby Vision), camera-partnership branding (Leica, Hasselblad, Zeiss) and OIS. Older flagships are de-rated since image processing pipelines have advanced significantly each generation. Megapixel count is deliberately downweighted — it correlates poorly with real-world camera quality.

  • 8 MP front camera
  • 1080p selfie video
164 phones in this group →
This phone
35%
Avg
61%
Best
92%
598 phones in catalog →
This phone
35%
Avg
55%
Best
92%

Based on selfie megapixels and max selfie-video resolution.

  • 7,000 mAh
  • 33W wired, PD 2.0, PPS, QC3
164 phones in this group →
This phone
79%
Avg
51%
Best
100%
598 phones in catalog →
This phone
79%
Avg
52%
Best
100%

Based on battery capacity (mAh) adjusted for platform efficiency calibrated against NotebookCheck, Tom's Guide, GSMArena and CNET reviewer tests. Apple A-series gets +45% (iOS process freezing + LTPO 1Hz + tuned panels make iPhone Pro Max outlast many 6500+ mAh Android phones in measured tests). Top Snapdragon / Dimensity flagships get +15%, budget chipsets are penalised −15% to −25% to reflect less efficient displays and looser background limits. Charging speed is excluded — see the separate Fast charging tag for that.

General

Dimensions

169.5 x 80.5 x 8.4

Weight

217 g

SIM

Nano-SIM + Nano-SIM

Operating System

Android 15, HyperOS 2.2

Colours

Black

Radio

No

Body

Midnight Black, Titan Gray, Ripple Green

Camera

Primary Camera Megapixels

50

Primary Camera Video

1080@30fs

Second Camera

50 , f/1.8, (wide), 1/2.88" 0.61μm, PDAF Auxiliary lens

Selfie Camera Features

HDR

Primary Selfie Camera

8 , f/2.0, (wide)

Video Resolution

1080

Selfie Video Resolution

1080@30fs

Display

Type

IPS LCD, 144Hz, 600 nits (typ), 700 nits (HBM), 850 nits (peak)

Display Size

6.9

Display Resolution

1080 x 2340 pixels, 19.5:9 ratio (~374 ppi density)

Display Protection

Corning Gorilla Glass 3, Mohs level 6

CPU & Memory

Chipset

Snapdragon 6s Gen 3

GPU

Adreno 619

CPU

Octa-core (2x2.3 GHz Cortex-A78 & 6x2.0 GHz Cortex-A55)

Memory Card Slot

microSDXC (uses shared SIM slot)

Internal Storage

128GB 256GB

Sound

Loudspeaker

Yes

3.5mm Jack

No

Connectivity & Data

2G

GSM 850 / 900 / 1800 / 1900

3G

HSDPA 800 / 850 / 900 / 1700(AWS) / 1900 / 2100

4G

1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 26, 28, 32, 38, 40, 41, 42, 48, 66, 71

5G

1, 2, 3, 5, 7, 8, 12, 20, 26, 28, 38, 40, 41, 48, 66, 77, 78, 71 SA/NSA

Network Speed

HSPA, LTE, 5G

Network Technology

GSM / HSPA / LTE / 5G

Wi-Fi

Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct

Bluetooth

5.1, A2DP, LE, aptX

USB

USB Type-C 2.0, OTG

NFC

Yes (market/region dependent)

GPS

GPS, GLONASS, GALILEO, BDS

Battery

Battery

7000

Charging

33W wired, PD 2.0, PPS, QC3 18W reverse wired

Other

Sensors

Fingerprint (side-mounted), accelerometer, compass