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Tecno Spark Slim vs Vivo Y31 Pro

What Spark Slim does better (13) and where Y31 Pro wins (8) — every spec side by side.

Tecno Spark Slim
Tecno · 2025Spark Slim
7.5Score
13 advantages≈ $190
Higher score
vs
Vivo Y31 Pro
Vivo · 2025Y31 Pro
7.4Score
8 advantages≈ $190
9.8Display7.0
5.2Camera5.4
7.8Battery8.4
4.1Features5.5
Dimensions

Size comparison

Spark SlimY31 Pro
75.9 × 164.25.976.3 × 165.78.1
Spark SlimY31 ProDifference
Height164.2 mm165.7 mm−1.5 mm
Width75.9 mm76.3 mm−0.4 mm
Thickness5.9 mm8.1 mm−2.2 mm
Weight156 g204 g−48 g

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

Why is Spark Slim better than Y31 Pro?

  1. Peak brightness4,500 nits vs 1,050 nits4.3×
  2. OLED panelYes · Y31 Pro: No
  3. NFCYes · Y31 Pro: No
  4. Refresh rate144 Hz vs 120 Hz+20%
  5. Wired charging45 W vs 44 W+2%
  6. Weight156 g vs 204 g+31%
  7. Storage (base)256 GB vs 128 GB2×
  8. Pixel density440 ppi vs 393 ppi+12%
  9. Selfie camera13 MP vs 8 MP+62%
  10. Charged in 30 min53% vs 38%+39%
  11. Thickness5.9 mm vs 8.1 mm+37%
  12. Resolution (width)1,224 px vs 1,080 px+13%

Why is Y31 Pro better than Spark Slim?

  1. Battery capacity5,160 mAh vs 6,500 mAh+26%
  2. 5GNo · Spark Slim: Yes
  3. Stereo speakersNo · Spark Slim: Yes
  4. Max video1080p vs 4K
  5. Dual SIMNo · Spark Slim: Yes
  6. CPU frequency2.2 GHz vs 2.5 GHz+14%
  7. Process6 nm vs 4 nm+50%
  8. Wi-Fi standardWi-Fi 4 vs Wi-Fi 5+25%
Specifications

Side by side

Tecno Spark SlimTecno Spark Slim≈ $1907.5
Vivo Y31 ProVivo Y31 Pro≈ $1907.4
Design
Weight156 g204 g
Thickness5.9 mm8.1 mm
Height164.2 mm165.7 mm
Width75.9 mm76.3 mm
FramePlasticPlastic
BackPlasticPlastic
Ingress protectionIP64IP64
Water resistance (IPx)IPx4IPx4
Glass protectionCorning Gorilla Glass 7i—
ColoursSlim White, Cool BlackDreamy White, Mocha Brown
Display
Screen size6.8″6.7″
PanelAMOLEDIPS LCD
OLED panelYesNo
Resolution (width)1,224 px1,080 px
Resolution (height)2,720 px2,408 px
Pixel density440 ppi393 ppi
Refresh rate144 Hz120 Hz
Peak brightness4,500 nits1,050 nits
Screen-to-body ratio89.1%86%
Performance
ChipsetMediatek Helio G200Mediatek Dimensity 7300
Chip makerMediaTekMediaTek
Process6 nm4 nm
CPU cores88
CPU frequency2.2 GHz2.5 GHz
GPUMali-G57 MC2Mali-G615 MC2
AnTuTu score591,552—
Geekbench 6 (multi-core)1,985—
Memory
RAM8 GB8 GB
Storage (max)256 GB256 GB
Storage (base)256 GB128 GB
Storage typeUFS 2.2UFS 3.1
Memory card slotNoNo
Camera
Main camera50 MP50 MP
Main camera aperture—f/1.8
Rear cameras11
Optical stabilisationNoNo
Ultra-wide cameraNoNo
Telephoto cameraNoNo
Max video1080p4K
4K video frame rate—30 fps
Selfie camera13 MP8 MP
4K selfie videoNoNo
Battery
Battery capacity5,160 mAh6,500 mAh
Battery typeLi-PoLi-Ion
Wired charging45 W44 W
Charged in 30 min53%38%
Wireless chargingNoNo
Connectivity
5GNoYes
eSIMNoNo
Dual SIMNoYes
Wi-Fi standardWi-Fi 4Wi-Fi 5
Bluetooth5.45.4
NFCYesNo
USBUSB Type-CUSB Type-C 2.0
USB version22
Infrared portYes—
Satellite navigationGLONASS, GALILEO, BDSGLONASS, GALILEO, BDS, QZSS
Features
Stereo speakersNoYes
3.5 mm headphone jackNoNo
Fingerprint sensorUnder displaySide
SensorsFingerprint (under display, optical), accelerometer, gyroFingerprint (side-mounted), accelerometer, gyro, proximity, compass
SAR (head)—0.98 W/kg
Software
OS at launchAndroid 15Android 15
PlatformAndroidAndroid
InterfaceHIOS 15Funtouch 15
To compare: 0up to 4 models
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