Head to head

Realme Narzo 100x vs Tecno Spark 40

Full specification and price comparison for Pakistan, updated 23 Aug 2026.

The short answer

The Realme Narzo 100x is the stronger phone of the two, scoring 70 against 65 on our combined specification score. It leads on performance, battery & charging and memory & storage. The Tecno Spark 40 still wins on value for money, so it remains the better choice if that is your priority. The Tecno Spark 40 is the cheaper of the two at PKR 38,999 against PKR 78,999.

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The verdict

Spec-derived

Realme Narzo 100x takes it by 5.3 points on our weighted spec score.

Performance Realme Narzo 100x leads

Gaming score where available, otherwise chipset tier plus usable RAM.

Camera Level

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

Battery & charging Realme Narzo 100x leads

Cell capacity in mAh weighted with rated wired charging output.

Display Level

Pixel density, refresh rate and panel technology.

Memory & storage Realme Narzo 100x leads

Highest advertised RAM and internal storage configuration.

Value for money Tecno Spark 40 leads

Combined spec score divided by current Pakistani retail price.

What actually differs

  • Tecno Spark 40 costs PKR 40,000 less.
  • Realme Narzo 100x packs a 2,800 mAh larger battery.
  • Realme Narzo 100x ships with 128 GB more storage.

Buy the Realme Narzo 100x if…

you care most about performance, battery & charging and memory & storage.

Buy the Tecno Spark 40 if…

you care most about value for money.

Full specification comparison

Specification Realme Narzo 100x Tecno Spark 40
Price in Pakistan
Retail price PKR 78,999 PKR 38,999 Cheaper
Design & build
Release date July 15, 2026 September 2025 (Pakistan)
Dimensions 166.4 × 78.2 × 8.8 mm 165.6 × 77 × 7.67 mm
Weight 224 g 188 g Better
Water resistance IP65 dust and water resistance. IP64
Display
Screen size 6.81 inches Better 6.67 in
Resolution 720 × 1570 pixels 720 × 1600 pixels (~263 ppi) Better
Panel type IPS LCD, 144Hz Up to 1200 nits (HBM) IPS LCD, 120Hz refresh rate
Protection Panda-1681 Glass Not listed
Performance
Chipset MediaTek Dimensity 6300 (6 nm) MediaTek Helio G81 (12 nm)
CPU Octa-core Octa-core (2×2.0 GHz Cortex-A75 + 6×1.8 GHz Cortex-A55)
GPU Mali-G57 MC2 Mali-G52 MC2
Operating system Android 16, realme UI 7.0 Android 15, HiOS 15
Memory & storage
RAM 4GB / 6GB 6 GB + 6 GB (6 GB physical + 6 GB extended)
Internal storage 128GB / 256GB Better 128 GB built-in
Card slot microSDXC, dedicated slot. microSDXC supported
Camera
Main camera 50 MP, f/1.8, PDAF, AI Camera, LED flash. 50 MP (wide)
Selfie camera 8 MP, f/2.0, wide-angle, 4P lens. 8 MP (wide)
Video recording 1080p@30fps (rear and front), 720p@120fps slow motion. 1440p@30fps / 1080p@30fps
Battery & charging
Battery capacity Silicon-Carbon (Si/C) Battery 8000 mAh (non-removable.) Better 5,200 mAh (non-removable)
Wired charging 45W SUPERVOOC wired charging, USB Power Delivery (PD) support, reverse charging, bypass charging. 45W wired fast charging
Connectivity & extras
SIM Dual Nano-SIM (Nano-SIM + Nano-USIM), Dual Standby Dual Nano-SIM
Wi-Fi Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi 5, Wi-Fi Direct, hotspot Wi-Fi 802.11 a/b/g/n/ac, dual-band
Bluetooth 5.3, A2DP, LE, aptX, aptX HD, LDAC, LHDC 5.0 Bluetooth v5.4
NFC No No
Sensors Fingerprint (side-mounted), accelerometer, proximity, ambient light sensor, compass, gyroscope Side-mounted fingerprint sensor, accelerometer, compass, proximity, gyroscope (software)
USB USB Type-C 2.0, OTG support USB Type-C

“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, Realme Narzo 100x or Tecno Spark 40?

Realme Narzo 100x comes out ahead on our combined spec score, leading by 5.3 points. It wins on performance, battery & charging and memory & storage. Tecno Spark 40 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 Realme Narzo 100x and Tecno Spark 40 in Pakistan?

Realme Narzo 100x is listed at PKR 78,999 and Tecno Spark 40 at PKR 38,999. That makes Tecno Spark 40 cheaper by PKR 40,000. Retail prices move often, so treat these as indicative.

Which phone has the better battery, Realme Narzo 100x or Tecno Spark 40?

Realme Narzo 100x leads on battery. Realme Narzo 100x carries a 8000 mAh cell and Tecno Spark 40 a 5200 mAh cell, with 45W and 45W wired charging respectively.

Which is better for gaming, Realme Narzo 100x or Tecno Spark 40?

Realme Narzo 100x is the stronger gaming phone here. Realme Narzo 100x runs the MediaTek Dimensity 6300 (6 nm) while Tecno Spark 40 runs the MediaTek Helio G81 (12 nm).

Related comparisons

Realme Narzo 100x vs Xiaomi Poco M8x Tecno Spark 40 vs Xiaomi Poco M8x Realme Narzo 100x vs Samsung Galaxy F54 Tecno Spark 40 vs Samsung Galaxy F54 Realme Narzo 100x vs Honor 200 Smart Tecno Spark 40 vs Honor 200 Smart Realme Narzo 100x vs Honor 200 Lite Tecno Spark 40 vs Honor 200 Lite

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.