Xiaomi Redmi 15 vs vivo Y21 5G

Comparing the Xiaomi Redmi 15 vs vivo Y21 5G across performance, display, camera, battery, storage and user rating to help determine the better smartphone.

Here is the summary of the results:

Performance: vivo Y21 5G runs at a higher processing speed of 2.4 GHz, while Xiaomi Redmi 15 runs at 2.3 GHz, making vivo Y21 5G the better performer.

Display: Xiaomi Redmi 15 offers a screen size of 6.9 inches, while vivo Y21 5G offers 6.74 inches, making Xiaomi Redmi 15 the larger display of the two. Xiaomi Redmi 15 features a IPS LCD display compared to vivo Y21 5G's LCD, making Xiaomi Redmi 15 the better display of the two.

Rear Camera: Both Xiaomi Redmi 15 and vivo Y21 5G feature a 50 MP primary rear camera.

Front Camera: Xiaomi Redmi 15 offers a higher front camera resolution with 8 MP, while vivo Y21 5G offers 5 MP, making Xiaomi Redmi 15 better for front camera photography.

Battery: vivo Y21 5G delivers longer battery life with None, while Xiaomi Redmi 15 delivers 14h 54m, making vivo Y21 5G the better pick for all day usage.

Storage: Both Xiaomi Redmi 15 and vivo Y21 5G offer the same internal storage of 128 GB.

User Rating: Xiaomi Redmi 15 and vivo Y21 5G both receive the same user rating of 4.2.

Xiaomi Redmi 15

₹21,499

@ Amazon

vivo Y21 5G

₹21,649

@ Amazon

realme P4x

₹22,999

Buy Now

Show Only Differences

Summary

Release Date

08 2025

03 2026

12 2025

Performance


Snapdragon 6s Gen 3	MediaTek Dimensity 6300	MediaTek Dimensity 7400 Ultra
Octa Core (upto 2.3 GHz)	Octa Core (upto 2.4 GHz)	Octa Core (upto 2.6 GHz)
6 GB RAM	4 GB RAM	6 GB RAM

Display


6.9 inches (17.53 cm)	6.74 inches (17.12 cm)	6.72 inches (17.07 cm)
IPS LCD	LCD	LCD
1080x2340 px (FHD+)	1600x720 px (QHD (2k))	1080x2400 px (FHD+)
144 Hz Refresh Rate	120 Hz Refresh Rate	144 Hz Refresh Rate

Rear Camera


50 MP Wide Angle Primary Camera	50 MP Primary Camera	50 MP Wide Angle Primary Camera
N/A	0.08 MP Camera	2 MP Mono Camera

Front Camera


8 MP Wide Angle Lens	5 MP	8 MP

Battery


7000 mAh	6500 mAh	7000 mAh
33W Fast Charging	44W	45W Super Charging
No Wireless Charging	N/A	No Wireless Charging

Storage

128 GB	128 GB	128 GB
UFS 2.2	UFS 2.2	UFS 3.1

Expert Review

7.0/10

Read Expert Review

N/A

8.0/10

Read Expert Review

Pros

Two-day battery life
Premium design
Big screen for bingeing content

Device yet to be reviewed

Excellent battery endurance
Delivers reliable performance
Snappy software with many AI tricks
Loud and crisp stereo speakers

Cons

Thick bezels
Phone seems unnecessarily large
Low-light photography could be better

Device yet to be reviewed

Camera output details could be improved
Many apps don't run at max refresh rate

User Ratings

4.2/5

(4,386 ratings)

4.2/5

(203 ratings)

4.3/5

(16,587 ratings)

Compare Prices

₹21,499

@ Amazon

₹21,649

@ Amazon

₹22,999

@ Flipkart

Video

1 Video

There are no videos available for the device.

1 More Video

User Feedback

General

Launch Date

August 19, 2025

(Official)

March 23, 2026

(Official)

December 4, 2025

(Official)

Operating System

Android v15

Android v16

Android v15

OS Updates

2 Year

N/A

2 Years

Security Updates

4 Year

N/A

3 Years

Custom UI

HyperOS

Origin OS

ColorOS

Performance

Performance Rating

Good

Very Good

Chipset

Qualcomm Snapdragon 6s Gen 3

MediaTek Dimensity 6300 MT6835

MediaTek Dimensity 7400 Ultra MT6878T

Processor

Octa core

2.3 GHz, Dual core, Cortex A78 1.95 GHz, Hexa Core, Cortex A55

Octa core

2.4 GHz, Dual core, Cortex A76 2 GHz, Hexa Core, Cortex A55

Octa core

2.6 GHz, Quad core, Cortex A78 2 GHz, Quad core, Cortex A55

Architecture (The higher, the better)

64 bit

Fabrication (The lower, the better)

6 nm

4 nm

Graphics (GPU)

Adreno 619

Mali-G57 MC2

Mali-G615 MC2

RAM

6 GB / 8 GB

4 GB / 6 GB / 8 GB

6 GB / 8 GB

RAM Type

LPDDR4X

Cooling Technology

N/A

Vapor Chamber

Performance Test Results

AnTuTu Score (The higher, the better) AnTuTu benchmark measures overall performance of a phone by stress-testing CPU, GPU, RAM, etc.

463,289

N/A

974,831

Bootup Time (The lower, the better)

34.0 s

N/A

27.0 s

Gaming Test Results

Wild Life Extreme (The higher, the better) Wild Life Extreme is a classic mobile benchmark; it renders in 4K to test the peak performance of a wide range of devices.

N/A

1,017

Battery Drain* (The lower, the better)

6.0 %

N/A

3.0 %

Heating* (The lower, the better)

23.7 %

N/A

21.1 %

* after 30 mins of gaming

Display

Display Rating

Excellent

Display Type

IPS LCD

LCD

Screen Size

6.9 inches (17.53 cm)

6.74 inches (17.12 cm)

6.72 inches (17.07 cm)

Resolution

1080x2340 px (FHD+)

1600x720 px (QHD (2k))

1080x2400 px (FHD+)

Peak Brightness

850 nits

N/A

950 nits

HBM Brightness

N/A

1200 nits

1000 nits

Refresh Rate

144 Hz

120 Hz

144 Hz

Touch Sampling Rate

288 Hz

N/A

240 Hz

Aspect Ratio

19.5:9

20:9

Pixel Density

374 ppi

260 ppi

391 ppi

Screen to Body Ratio (calculated)

86.04 %

85.03 %

86.42 %

Screen Protection

N/A

Yes

Bezel-less Display

Yes with punch-hole display

Screen to Body Ratio (claimed by the brand)

N/A

91.4 %

Design

Height

168.48 mm

167.40 mm

166 mm

Width

80.45 mm

77.10 mm

76 mm

Thickness

8.40 mm

8.39 mm

Weight

217 grams

209 grams

208 grams

Build Material

Back: Plastic

Back: Glass Plastic

Water Resistance

Yes Splash proof IP64

Yes Water resistant IP65

Yes Splash proof IP64

Ruggedness

Dust proof

Rear Camera

Rear Camera Rating

Good

Very Good

Resolution

50 MP
Primary Cameraf/1.75 Wide Angle

50 MP
Primary Cameraf/1.8

50 MP
Primary Camera10x Digital Zoomf/1.8 Wide Angle 76° field-of-view27 mm focal length 1/2.88" sensor size OV50D 0.61µm pixel size

N/A

0.08 MP
f/3.0

2 MP
f/2.4 Mono Camera1/5.1" sensor size 1.75µm pixel size

Autofocus

Yes

Yes Phase Detection Autofocus

OIS

N/A

Flash

Yes LED Flash

Yes

Yes LED Flash

Image Resolution

8150 x 6150 Pixels

N/A

3072 x 4096 Pixels

Settings

Exposure compensation ISO control

N/A

Shooting Modes

Continuous Shooting
High Dynamic Range mode (HDR)

N/A

Continuous Shooting

Camera Features

Digital Zoom
Auto Flash
Face detection
Filters
Touch to focus

N/A

10 x Digital Zoom

Video Recording

Full HD @30 fps

N/A

4k @30 fps
Full HD @30/60/120 fps
HD @30/60/120/240 fps

Video Recording Features

N/A

Slow Motion

Front Camera

Front Camera Rating

Very Good

Good

Very Good

Resolution

8 MP
f/2.2 Wide Angle Primary Camera

5 MP
f/2.2 Primary Camera

8 MP
f/2.0 Primary Camera1/4.0" sensor size 1.12µm pixel size

Autofocus

N/A

Flash

N/A

Yes Screen flash

Video Recording

Full HD @30 fps

N/A

Full HD @30 fps
HD @30 fps

Battery

Battery Rating

Very Good

Capacity

7000 mAh

6500 mAh

7000 mAh

Battery Type

Silicon Carbon

Li-ion

Li-Polymer

TalkTime

N/A

Up to 49.9 Hours(2G)

Quick Charging

Yes 33W Fast Charging

Yes 44W 100% in 73 minutes

Yes 45W Super Charging 100% in 90 minutes

Reverse Charging

Yes 18W Reverse Charging

Yes

Yes 10W Reverse Charging

Battery Test Results

Battery Life (PC Mark) (The higher, the better) PCMark Battery benchmark measures battery life of a phone with various activities such as web browsing, photo editing, writing, video editing, etc.

14h 54m

N/A

17h 38m

Charging Time (20% to 100%) (The lower, the better)

1h 18m

N/A

1h 25m

Storage

Internal Storage

128 GB / 256 GB

64 GB / 128 GB

128 GB / 256 GB

Storage Type

UFS 2.2

UFS 3.1

Expandable Storage

Yes Up to 2 TB

Yes Up to 2048 GB

Network & Connectivity

SIM Slot(s)

Dual SIM

SIM Type

SIM1: Nano SIM2: Nano (Hybrid)

SIM1: Nano SIM2: Nano

Network Support

5G 4G

VoLTE

Yes

SIM 1

5G Bands:

FDD N1 / N3 / N5 / N8 / N28
TDD N40 / N78

5G Bands:

FDD N1 / N3 / N5 / N7 / N8 / N20 / N28 / N66 / N71
TDD N38 / N40 / N41 / N77 / N78

5G Bands:

FDD N1 / N3 / N5 / N8 / N28
TDD N40 / N41 / N77 / N78

4G Bands:

TD-LTE 2300(band 40) / 2500(band 41)
FD-LTE 2100(band 1) / 1800(band 3) / 900(band 8) / 700(band 28) / 850(band 5)

4G Bands:

TD-LTE 2600(band 38) / 2300(band 40) / 2500(band 41)
FD-LTE 1700(band 66) / 2100(band 1) / 600(band 71) / 1800(band 3) / 2600(band 7) / 900(band 8) / 700(band 28) / 1700(band 4) / 850(band 5) / 850(band 19) / 800(band 20)

4G Bands:

TD-LTE 2300(band 40) / 2500(band 41)
FD-LTE 2100(band 1) / 1800(band 3) / 900(band 8) / 700(band 28) / 850(band 5)

SIM 2

5G Bands:

FDD N1 / N3 / N5 / N8 / N28
TDD N40 / N78

5G Bands:

FDD N1 / N3 / N5 / N7 / N8 / N20 / N28 / N66 / N71
TDD N38 / N40 / N41 / N77 / N78

5G Bands:

FDD N1 / N3 / N5 / N8 / N28
TDD N40 / N41 / N77 / N78

4G Bands:

TD-LTE 2300(band 40) / 2500(band 41)
FD-LTE 2100(band 1) / 1800(band 3) / 900(band 8) / 700(band 28) / 850(band 5)

4G Bands:

TD-LTE 2600(band 38) / 2300(band 40) / 2500(band 41)
FD-LTE 2100(band 1) / 1800(band 3) / 2600(band 7) / 900(band 8) / 700(band 28) / 1700(band 4) / 850(band 5) / 850(band 19) / 800(band 20) / 600(Band 71) / 1700(band 66)

4G Bands:

TD-LTE 2300(band 40) / 2500(band 41)
FD-LTE 2100(band 1) / 1800(band 3) / 900(band 8) / 700(band 28) / 850(band 5)