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  3. Y21 vs Redmi Note 15 Special

Vivo Y21 vs Xiaomi Redmi Note 15 Special

What Y21 does better (3) and where Redmi Note 15 Special wins (13) — every spec side by side.

Vivo Y21
Vivo · 2026Y21
7.5Score
3 advantages≈ $190
vs
Xiaomi Redmi Note 15 Special
Xiaomi · 2026Redmi Note 15 Special
8.2Score
13 advantages≈ $210
Higher score
6.6Display9.0
4.1Camera6.3
8.4Battery8.1
6.8Features6.4
Dimensions

Size comparison

Y21Redmi Note 15 Special
77.1 × 167.48.475.4 × 1647.4
Y21Redmi Note 15 SpecialDifference
Height167.4 mm164 mm+3.4 mm
Width77.1 mm75.4 mm+1.7 mm
Thickness8.4 mm7.4 mm+1 mm
Weight209 g178 g+31 g

Drawn to the same scale from the official dimensions (front and side).

Why is Y21 better than Redmi Note 15 Special?

  1. NFCYes · Redmi Note 15 Special: No
  2. Battery capacity6,500 mAh vs 5,800 mAh+12%
  3. 3.5 mm headphone jackYes · Redmi Note 15 Special: No

Why is Redmi Note 15 Special better than Y21?

  1. Peak brightness1,200 nits vs 3,200 nits2.7×
  2. OLED panelNo · Y21: Yes
  3. Pixel density260 ppi vs 388 ppi+49%
  4. Selfie camera5 MP vs 20 MP4×
  5. Wired charging44 W vs 45 W+2%
  6. Max video1080p vs 4K
  7. Water resistance (IPx)IPx5 vs IPx6+20%
  8. Weight209 g vs 178 g+17%
  9. Resolution (width)720 px vs 1,080 px+50%
  10. Process6 nm vs 4 nm+50%
  11. Wi-Fi standardWi-Fi 4 vs Wi-Fi 5+25%
  12. Thickness8.4 mm vs 7.4 mm+14%
Specifications

Side by side

Vivo Y21Vivo Y21≈ $1907.5
Design
Weight209 g178 g
Thickness8.4 mm7.4 mm
Height167.4 mm164 mm
Width77.1 mm75.4 mm
FramePlasticPlastic
BackPlasticEco leather
Ingress protectionIP65IP66
Water resistance (IPx)IPx5IPx6
ColoursChampagne Gold, Midnight BlueCrimson Reserve Red, Carbon Black, Frosted White
Display
Screen size6.7″6.8″
PanelIPS LCDAMOLED
OLED panelNoYes
Resolution (width)720 px1,080 px
Resolution (height)1,600 px2,392 px
Pixel density260 ppi388 ppi
Refresh rate120 Hz120 Hz
Peak brightness1,200 nits3,200 nits
Screen-to-body ratio85%89.7%
Performance
ChipsetMediatek Dimensity 6300Qualcomm SM6475-AB Snapdragon 6 Gen 3
Chip makerMediaTekQualcomm
Process6 nm4 nm
CPU cores88
CPU frequency2.4 GHz2.4 GHz
GPUMali-G57 MC2Adreno 710
Memory
RAM8 GB8 GB
Storage (max)256 GB256 GB
Storage (base)128 GB128 GB
Storage typeeMMC 5.1UFS 2.2
Memory card slotYesYes
Camera
Main camera50 MP50 MP
Main camera aperturef/1.8f/1.8
Main sensor size—1/2.88"
Rear cameras11
Optical stabilisationNoNo
Ultra-wide cameraNoNo
Telephoto cameraNoNo
Max video1080p4K
4K video frame rate—30 fps
Selfie camera5 MP20 MP
4K selfie videoNoNo
Battery
Battery capacity6,500 mAh5,800 mAh
Battery typeLi-IonLi-Ion
Wired charging44 W45 W
Charged in 30 min42%—
Wireless chargingNoNo
Connectivity
5GYesYes
eSIMNoNo
Dual SIMYesYes
Wi-Fi standardWi-Fi 4Wi-Fi 5
Bluetooth—5.1
NFCYesNo
USBUSB Type-C 2.0USB Type-C 2.0
USB version22
Satellite navigationGLONASS, GALILEO, BDS, QZSSGLONASS, GALILEO, BDS, QZSS
Features
Stereo speakersYesYes
3.5 mm headphone jackYesNo
Fingerprint sensorSideUnder display
SensorsFingerprint (side-mounted), accelerometer, proximity, compassFingerprint (under display, optical), accelerometer, gyro, compass
Software
OS at launchAndroid 16Android 15
PlatformAndroidAndroid
InterfaceOriginOS 6HyperOS 3
Major OS updates promised—4
EU label
Energy classA—
Battery charge cycles1,600—
Endurance per cycle67 h—
Repairability classC—
Drop resistance classA—
To compare: 0up to 4 models
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