Head to head

Tecno Spark 40 5G vs Vivo Y31d

Full specification and price comparison for Pakistan, updated 7 Aug 2026.

The short answer

The Vivo Y31d is the stronger phone of the two, scoring 78 against 74 on our combined specification score. It leads on battery & charging. The Tecno Spark 40 5G still wins on value for money, so it remains the better choice if that is your priority. The Tecno Spark 40 5G is the cheaper of the two at PKR 49,999 against PKR 57,999.

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The verdict

Spec-derived

Vivo Y31d takes it by 4.2 points on our weighted spec score.

Camera Level

Camera Score where available, otherwise sensor resolution and lens count. Megapixels alone do not measure image quality.

Battery & charging Vivo Y31d leads

Cell capacity in mAh weighted with rated wired charging output.

Display Level

Pixel density, refresh rate and panel technology.

Memory & storage Level

Highest advertised RAM and internal storage configuration.

Value for money Tecno Spark 40 5G leads

Combined spec score divided by current Pakistani retail price.

What actually differs

  • Tecno Spark 40 5G costs PKR 8,000 less.
  • Vivo Y31d packs a 1,200 mAh larger battery.
  • Vivo Y31d charges 26W faster.

Buy the Tecno Spark 40 5G if…

you care most about value for money.

Buy the Vivo Y31d if…

you care most about battery & charging.

Not enough published data to score: Performance. Those categories are excluded from the overall figure rather than estimated.

Full specification comparison

Specification Tecno Spark 40 5G Vivo Y31d
Price in Pakistan
Retail price PKR 49,999 Cheaper PKR 57,999
Design & build
Release date July 2025 March 2026
Dimensions 167.69 × 77.87 × 7.99 mm 166.64 x 78.43 x 8.39 mm
Weight Not officially specified 219g
Water resistance IP64 Certified IP68/IP69 Dust & Water Resistant
Display
Screen size 6.67 inches 6.75 Inches Better
Resolution 720 × 1600 pixels (HD+) Better 720 x 1570 Pixels (256 PPI)
Panel type IPS LCD 120Hz Up to 700 nits (HBM) IPS LCD, 120Hz
Protection Panda Glass basic scratch-resistant glass
Performance
Chipset MediaTek Dimensity 6400 5G+ Qualcomm Snapdragon 6s Gen 2 4G
CPU Octa-core Octa-core
GPU Mali-G57 MC2 Adreno 610
Operating system Android 15 HiOS 15 Android 16, OriginOS 6
Memory & storage
RAM 4GB / 6GB / 8GB LPDDR4X (Memory Fusion (Virtual RAM) Up to 8GB Extended RAM) 6GB / 8GB
Internal storage 128GB / 256GB UFS 2.2 128GB / 256GB
Card slot microSDXC Dedicated microSD card slot (market dependent) Expandable storage up to 1TB (market dependent) No
Camera
Main camera 50 MP, Wide AI Lens Autofocus Dual LED Flash HDR Panorama AI Scene Recognition Night Mode Portrait Mode Beauty Mode Pro Mode Super Resolution Time-Lapse Slow Motion AI Camera Filters Document Scanner QR Code Scanner Continuous Shooting 50 MP + 2 MP HDR, Panorama, Night Mode, Portrait, Time-lapse
Selfie camera 8 MP Wide Portrait Mode HDR Face Retouch Filters Gesture Capture Smile Capture 8 MP
Video recording 1080p @ 30fps 720p @ 30fps Dual Video Time-Lapse Video Slow Motion Video 1080p@30fps
Battery & charging
Battery capacity Li-Ion (non-removable) 6000 mAh Li-Po (non-removable) 7200mAh Better
Wired charging 18W Fast Charging 44W Fast Charging Reverse Wired Charging Bypass Charging Supported Better
Connectivity & extras
SIM Dual Nano-SIM, Dual Standby Dual SIM (Nano-SIM, Dual Standby)
Wi-Fi Wi-Fi 802.11 a/b/g/n/ac Dual-band Wi-Fi Wi-Fi Hotspot Wi-Fi 802.11 a/b/g/n/ac, Dual-Band
Bluetooth 5.4 5.1
NFC Yes No
Sensors Side-mounted Fingerprint Scanner Face Unlock Ambient Light Sensor Proximity Sensor Accelerometer (G-Sensor) Electronic Compass Virtual Gyroscope Infrared Remote Sensor Fingerprint Sensor: Side-mounted Accelerometer Gyroscope Compass Proximity Sensor Ambient Light Sensor
USB USB Type-C 2.0, OTG USB Type-C 2.0, OTG

“Better” marks the higher (or, for price and weight, the lower) figure. It is a specification difference, not a judgement about real-world experience.

Questions people ask

Which is better, Tecno Spark 40 5G or Vivo Y31d?

Vivo Y31d comes out ahead on our combined spec score, leading by 4.2 points. It wins on battery & charging. Tecno Spark 40 5G can still be the better buy if your priorities sit elsewhere or if you find it at a lower street price.

What is the price of Tecno Spark 40 5G and Vivo Y31d in Pakistan?

Tecno Spark 40 5G is listed at PKR 49,999 and Vivo Y31d at PKR 57,999. That makes Tecno Spark 40 5G cheaper by PKR 8,000. Retail prices move often, so treat these as indicative.

Which phone has the better battery, Tecno Spark 40 5G or Vivo Y31d?

Vivo Y31d leads on battery. Tecno Spark 40 5G carries a 6000 mAh cell and Vivo Y31d a 7200 mAh cell, with 18W and 44W wired charging respectively.

Related comparisons

Tecno Spark 40 5G vs Tecno Spark 30 5G Vivo Y31d vs Tecno Spark 30 5G Tecno Spark 40 5G vs Tecno Camon 19 Pro Vivo Y31d vs Tecno Camon 19 Pro Tecno Spark 40 5G vs TECNO POVA 5 Pro 5G Free Fire Special Edition Vivo Y31d vs TECNO POVA 5 Pro 5G Free Fire Special Edition Tecno Spark 40 5G vs Tecno Spark 20 Pro 5G Vivo Y31d vs Tecno Spark 20 Pro 5G

Tools that use this data

Camera Score Tool Battery Score Tool Gaming Performance Checker AI Mobile Recommendation Tool All comparisons

Scores are calculated from the published hardware specification of each device using the same formula for every phone on WhatMobilePK — they are not paid placements and they are not laboratory test results. Prices are indicative Pakistani retail prices and change frequently.