Head to head

Tecno Spark 40 5G vs Vivo Y31 5G

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

The short answer

The Tecno Spark 40 5G is the stronger phone of the two, scoring 74 against 70 on our combined specification score. It leads on camera, battery & charging and memory & storage. The Vivo Y31 5G is the cheaper of the two at PKR 47,999 against PKR 49,999.

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The verdict

Spec-derived

Tecno Spark 40 5G takes it by 3.9 points on our weighted spec score.

Camera Tecno Spark 40 5G leads

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

Battery & charging Tecno Spark 40 5G leads

Cell capacity in mAh weighted with rated wired charging output.

Display Level

Pixel density, refresh rate and panel technology.

Memory & storage Tecno Spark 40 5G leads

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

  • Vivo Y31 5G costs PKR 2,000 less.
  • Tecno Spark 40 5G packs a 1,000 mAh larger battery.
  • Tecno Spark 40 5G offers 2 GB more RAM.
  • Tecno Spark 40 5G ships with 128 GB more storage.
  • Tecno Spark 40 5G has a 37 MP higher-resolution main sensor.

Buy the Tecno Spark 40 5G if…

you care most about camera, battery & charging, memory & storage and value for money.

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 Y31 5G
Price in Pakistan
Retail price PKR 49,999 PKR 47,999 Cheaper
Design & build
Release date July 2025 January 2022
Dimensions 167.69 × 77.87 × 7.99 mm 164.0 × 75.8 × 8.3 mm
Weight Not officially specified 188 g
Water resistance IP64 Certified no official water or dust resistance
Display
Screen size 6.67 inches Better 6.58 inches
Resolution 720 × 1600 pixels (HD+) 1080 × 2408 pixels (~401 ppi) Better
Panel type IPS LCD 120Hz Up to 700 nits (HBM) IPS LCD 60Hz
Protection Panda Glass Not listed
Performance
Chipset MediaTek Dimensity 6400 5G+ MediaTek Dimensity 700 (7 nm)
CPU Octa-core Octa-core (2×2.2 GHz Cortex-A76 + 6×2.0 GHz Cortex-A55)
GPU Mali-G57 MC2 Mali-G57 MC2
Operating system Android 15 HiOS 15 Android 11(Funtouch OS 12)
Memory & storage
RAM 4GB / 6GB / 8GB LPDDR4X (Memory Fusion (Virtual RAM) Up to 8GB Extended RAM) Better 4 GB / 6 GB
Internal storage 128GB / 256GB UFS 2.2 Better 128 GB
Card slot microSDXC Dedicated microSD card slot (market dependent) Expandable storage up to 1TB (market dependent) microSDXC (dedicated slot)
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 Better 13 MP (wide, f/2.2) + 2 MP (macro)
Selfie camera 8 MP Wide Portrait Mode HDR Face Retouch Filters Gesture Capture Smile Capture 8 MP (wide)
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 Better Li-Po 5000 mAh (non-removable)
Wired charging 18W Fast Charging 18W wired
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 (side-mounted), accelerometer, proximity, compass
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 Y31 5G?

Tecno Spark 40 5G comes out ahead on our combined spec score, leading by 3.9 points. It wins on camera, battery & charging, memory & storage and value for money. Vivo Y31 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 Y31 5G in Pakistan?

Tecno Spark 40 5G is listed at PKR 49,999 and Vivo Y31 5G at PKR 47,999. That makes Vivo Y31 5G cheaper by PKR 2,000. Retail prices move often, so treat these as indicative.

Which has the better camera, Tecno Spark 40 5G or Vivo Y31 5G?

Tecno Spark 40 5G scores higher in our camera assessment. Tecno Spark 40 5G uses a 50 MP main sensor against 13 MP on Vivo Y31 5G, though sensor size and processing matter more than resolution alone.

Which phone has the better battery, Tecno Spark 40 5G or Vivo Y31 5G?

Tecno Spark 40 5G leads on battery. Tecno Spark 40 5G carries a 6000 mAh cell and Vivo Y31 5G a 5000 mAh cell, with 18W and 18W wired charging respectively.

Related comparisons

Tecno Spark 40 5G vs Tecno Spark 30 5G Vivo Y31 5G vs Tecno Spark 30 5G Tecno Spark 40 5G vs Tecno Camon 19 Pro Vivo Y31 5G vs Tecno Camon 19 Pro Tecno Spark 40 5G vs TECNO POVA 5 Pro 5G Free Fire Special Edition Vivo Y31 5G vs TECNO POVA 5 Pro 5G Free Fire Special Edition Tecno Spark 40 5G vs Tecno Spark 20 Pro 5G Vivo Y31 5G 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.