Tecno Spark 40C (128GB / 4GB RAM)

The Tecno Spark 40C has a conventional, non-folding design with a slim 8.4 mm thickness and overall dimensions of 77 mm in width and 165.6 mm in height, giving it a total volume of 107.11 cm³. A notable practical feature is its IP64 rating, which certifies the device as resistant to dust ingress and capable of withstanding water splashes from any direction, though it does not carry a rugged-grade build.

The Tecno Spark 40C features a 6.67″ IPS LCD touchscreen with a 120Hz refresh rate, which contributes to smoother on-screen motion during everyday use. The panel resolves at 720 x 1600 px, translating to a pixel density of 263 ppi. It does not include branded damage-resistant glass, and there is no support for HDR10, HDR10+, or Dolby Vision, nor does it offer an Always-On Display mode or a secondary screen.

The Tecno Spark 40C is powered by the MediaTek Helio G81 Ultra, a 12 nm octa-core chipset configured as 2 cores at 2 GHz and 6 cores at 1.8 GHz, with a turbo clock of 2 GHz and a TDP of 5W. It is paired with 4GB of DDR4 RAM running at 1800 MHz across 2 memory channels, delivering a maximum memory bandwidth of 13.41 GB/s, while the maximum supported memory amount reaches 8GB. The SoC includes integrated graphics via a Mali G52 MP2 GPU featuring 2 execution units, 32 shading units, and a turbo clock of 950 MHz, with support for DirectX 12, OpenGL 3.2, OpenGL ES 3.2, and OpenCL 2. Storage comes in at 128GB via eMMC 5.1, and the chip also integrates LTE. Additional architectural details include big.LITTLE technology, 8 CPU threads, TrustZone security, 5500 million transistors, 0.3 MB of L2 cache, 1 MB of L3 cache, and full 64-bit support. Geekbench 6 scores land at 420 single-core and 1391 multi-core, while Geekbench 5 results are 350 and 1300 respectively.

The Tecno Spark 40C carries a single-lens 13 MP rear camera with an f/1.8 aperture and a CMOS sensor, though it lacks a back-illuminated sensor and optical image stabilization. Autofocus options include phase-detection and touch autofocus, while continuous autofocus is available during video recording; laser autofocus is not present. Video capture tops out at 1080p at 30 fps, with slow-motion recording supported but no HDR10 or Dolby Vision recording. The manual controls on offer cover exposure, ISO, focus, and white balance, though manual shutter speed is absent. A single LED flash is included at the rear, while the front camera has no flash of its own. The 8 MP front-facing camera is a single-lens unit and is not positioned under the display. Additional shooting modes include burst, HDR, and in-camera panorama, while 360-degree panorama, RAW capture, and 3D photo or video recording are not supported.

The Tecno Spark 40C ships with Android 15, a free and open-source platform that supports multiple user accounts and includes a broad set of privacy controls — among them clipboard warnings, location privacy options, camera and microphone access management, and the ability to block app tracking, though cross-site tracking blocking and Mail Privacy Protection are absent. Customization options are well covered, with dynamic theming, theme customization, dark mode, an extra dim mode, home screen widgets, and customizable notifications all present; focus modes and Wi-Fi password sharing are not available. On the productivity side, the OS supports split-screen multitasking, Picture-in-Picture, full-page scrolling screenshots, a media picker, sharing intents, app offloading, and the ability to play games while they are still downloading. On-device machine learning is supported, as are offline voice recognition, voice commands, and device position tracking. A battery health check and child lock are also included, while Quick Start and the ability to use the phone as a PC are not, and OS updates do not come directly from the vendor.

The Tecno Spark 40C houses a 6000 mAh rechargeable, non-removable battery with a built-in level indicator. It supports 18W fast charging, which helps reduce downtime at the cable, though neither wireless charging nor reverse wireless charging is available.

The Tecno Spark 40C includes stereo speakers but omits a 3.5 mm headphone jack, so wired audio relies on an adapter or USB-C connection. There is no radio, and none of the advanced Bluetooth audio codecs — aptX, aptX HD, aptX Adaptive, aptX Lossless, or LDAC — are supported.

The Tecno Spark 40C operates on 4G LTE with no 5G support, and accommodates two SIM cards alongside a cellular module. Wireless networking covers Wi-Fi 4 (802.11n) and Wi-Fi 5 (802.11ac), with download speeds reaching 300 Mbits/s and upload speeds up to 100 Mbits/s. The phone uses a USB Type-C connector and includes GPS with Galileo support, as well as an accelerometer, while NFC, an infrared sensor, a barometer, HDMI output, ANT+, and DLNA certification are all absent. Security is handled by a fingerprint scanner; 3D facial recognition and an iris scanner are not present, and no stylus is included. Features such as crash detection, emergency SOS via satellite, a heart rate monitor, motion tracking, optical tracking, and a built-in projector are likewise not part of the specification.

The Tecno Spark 40C includes a video light to assist with recording in low-light conditions. The display is flat rather than curved, and the device uses neither sapphire glass nor an e-paper panel.