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  3. K51S vs Y51 (2020, December)

LG K51S vs Vivo Y51 (2020, December)

What K51S does better (2) and where Y51 (2020, December) wins (13) — every spec side by side.

LG K51S
LG · 2020K51S
5.5Score
2 advantages≈ $220
vs
Vivo Y51 (2020, December)
5.5Score
13 advantages≈ $230
Higher score
3.8Display4.6
5.7Camera6.5
5.6Features3.9
Dimensions

Size comparison

K51SY51 (2020, December)
76.7 × 165.28.375.3 × 163.98.4
K51SY51 (2020, December)Difference
Height165.2 mm163.9 mm+1.3 mm
Width76.7 mm75.3 mm+1.4 mm
Thickness8.3 mm8.4 mm−0.1 mm
Weight194 g188 g+6 g

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

Why is K51S better than Y51 (2020, December)?

  1. NFCYes · Y51 (2020, December): No
  2. CPU frequency2.3 GHz vs 2 GHz+15%

Why is Y51 (2020, December) better than K51S?

  1. RAM3 GB vs 8 GB2.7×
  2. Battery capacity4,000 mAh vs 5,000 mAh+25%
  3. Main camera32 MP vs 48 MP+50%
  4. Storage (max)64 GB vs 128 GB2×
  5. Pixel density282 ppi vs 401 ppi+42%
  6. Storage (base)64 GB vs 128 GB2×
  7. Max video1080p vs 4K
  8. Weight194 g vs 188 g+3%
  9. Resolution (width)720 px vs 1,080 px+50%
  10. Wi-Fi standardWi-Fi 4 vs Wi-Fi 5+25%
  11. Selfie camera13 MP vs 16 MP+23%
  12. Screen-to-body ratio73.8% vs 84.5%+14%
Specifications

Side by side

LG K51SLG K51S≈ $2205.5
Design
Weight194 g188 g
Thickness8.3 mm8.4 mm
Height165.2 mm163.9 mm
Width76.7 mm75.3 mm
Glass protectionScratch-resistant glass—
ColoursTitanium, Pink, Blue, RedTitanium Sapphire, Crystal Symphony
Display
Screen size6.6″6.6″
PanelIPS LCDIPS LCD
OLED panelNoNo
Resolution (width)720 px1,080 px
Resolution (height)1,600 px2,408 px
Pixel density282 ppi401 ppi
Refresh rate60 Hz60 Hz
Screen-to-body ratio73.8%84.5%
Performance
ChipsetMediatek MT6765 Helio P35Qualcomm SDM665 Snapdragon 665
Chip makerMediaTekQualcomm
Process12 nm11 nm
CPU cores88
CPU frequency2.3 GHz2 GHz
GPUPowerVR GE8320Adreno 610
Memory
RAM3 GB8 GB
Storage (max)64 GB128 GB
Storage (base)64 GB128 GB
Storage typeeMMC 5.1—
Memory card slotYesYes
Camera
Main camera32 MP48 MP
Main camera aperture—f/1.8
Main sensor size—1/2.0"
Rear cameras22
Optical stabilisationNoNo
Ultra-wide cameraYesYes
Telephoto cameraNoNo
Max video1080p4K
4K video frame rate—30 fps
Selfie camera13 MP16 MP
4K selfie videoNoNo
Battery
Battery capacity4,000 mAh5,000 mAh
Battery typeLi-Po—
Wired charging—18 W
Wireless charging—No
Connectivity
eSIMNoNo
Dual SIMYesYes
Wi-Fi standardWi-Fi 4Wi-Fi 5
Bluetooth55
NFCYesNo
USBUSB Type-C 2.0USB Type-C 2.0
USB version22
Satellite navigation—GLONASS, GALILEO, BDS
Features
Stereo speakersNoNo
3.5 mm headphone jackYesYes
Fingerprint sensorRearSide
SensorsFingerprint (rear-mounted), accelerometer, proximity, compassFingerprint (side-mounted), accelerometer, gyro, proximity, compass
Software
OS at launchAndroid 9.0 (Pie)Android 11
PlatformAndroidAndroid
Interface—Funtouch 11
To compare: 0up to 4 models
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