Side-by-side technical data
Tecno Spark Slim vs Tecno Spark 40
Comparison between Tecno Spark Slim and Tecno Spark 40: camera, battery, fast charging, display, performance and colors, side by side. More phones from Tecno.
NeoTeo's verdict
Which of the two is the better buy
The Tecno Spark Slim is the choice for anyone seeking a clearly better display and more performance; the Spark 40 only makes sense if it costs less. Its 144 Hz AMOLED panel versus 120 Hz IPS LCD, and 445,000 AnTuTu points versus 250,000, decide the matchup.
The Slim is also much lighter and thinner: 156 g and 5.9 mm versus 188 g and 7.7 mm. Its usable surface is 89.1% versus 84%, while its 1224 px × 2720 px resolution exceeds the Spark 40’s 720 px × 1600 px. Pixel density is above average at 440 ppi versus 263 ppi, and both phones share 4,500 nits peak brightness.
The Spark Slim adds Bluetooth 5.4 versus Bluetooth 5.3 and a 13 MP front camera versus 8 MP; its main camera uses a Dual LED flash, while the Spark 40 uses an LED flash. Both offer 8 GB of RAM, up to 256 GB of storage, a Li-Polymer battery and 45 W charging, plus reverse charging. The Spark 40 is the sensible pick only at a lower price.
Tecno Spark Slim
The Tecno Spark Slim is the better buy for anyone seeking 144 Hz AMOLED, a 445,000 AnTuTu score and a 156 g body.
Tecno Spark 40
The Tecno Spark 40 is only the better buy at a lower price: its 120 Hz IPS LCD trails the Slim’s 144 Hz AMOLED panel.
The verdict
Your pick: Tecno Spark Slim, ahead on Design & display, Performance & hardware and Connectivity. Unless Camera decides it for you.
| Category | Spark Slim | Spark 40 |
|---|---|---|
| Design & display | 8.0 | 5.7 |
| Performance & hardware | 5.6 | 3.8 |
| Camera | 2.4 | 3.8 |
| Connectivity | 6.6 | 5.6 |
| Battery & charging | 6.7 | 6.8 |
Which one is for you?
Tecno Spark Slim, if you care about…
- AnTuTu Score
- 445,000
- against 250,000
- Display Technology
- AMOLED
- against IPS LCD
- Bluetooth Version
- Bluetooth 5.4
- against Bluetooth 5.3
- Display Refresh Rate
- 144 Hz
- against 120 Hz
Specification comparison
Performance
| Specification | Spark Slim | Spark 40 |
|---|---|---|
| Processor Model | MediaTek Helio G200 | MediaTek Helio G91 |
| Processor Process Size | 6 nm Best value | 12 nm |
| Graphics GPU | Mali-G57 MC2 | Arm Mali-G52 MC2 (850 MHz) |
| Storage Type | — | eMMC 5.1 |
| Maximum CPU Clock | 2.5 GHz Best value | 2 GHz |
| Maximum Storage Capacity | 256 GB | 256 GB |
| AnTuTu Score | 445,000 Best value | 250,000 |
| Geekbench 6 Single-Core | — | 420 |
| Geekbench 6 Multi-Core | — | 1,391 |
| CPU Description | — | 2× Cortex-A75 at 2.0 GHz plus 6× Cortex-A55 at 1.8 GHz |
| Processor Type | Octa-Core | Octa-Core |
| 64-Bit Processor | Yes | Yes |
| RAM Capacity | 8 GB | 8 GB |
| RAM Type | — | DDR4 |
| Expandable Storage | Yes | Yes |
| AnTuTu version | v10 | v10 |
Design
| Specification | Spark Slim | Spark 40 |
|---|---|---|
| Body Colors | White, Black, Blue, Grey | Black, White, Blue, Grey |
| Body Thickness | 5.9 mm Best value | 7.7 mm |
| Body Width | 75.9 mm | 77 mm |
| Body Height | 164.2 mm | 165.6 mm |
| Weight | 156 g Best value | 188 g |
| Usable Surface | 89.1 % Best value | 84 % |
| Body Materials | Glass, Plastic | Polycarbonate |
| Resistance Features | IP64, MIL-STD-810H | IP64 |
Battery
| Specification | Spark Slim | Spark 40 |
|---|---|---|
| Battery Capacity | 5,160 mAh | 5,200 mAh Best value |
| Battery Type | Li-Polymer | Li-Polymer |
| Fast Charge Power | 45 W | 45 W |
| Battery Features | Fast Charging, Reverse Charging, Bypass Charging, Non-Removable | Fast Charging, Reverse Charging, Non-Removable, Battery Level Indicator, Charger Included, Rechargeable |
Display
| Specification | Spark Slim | Spark 40 |
|---|---|---|
| Display Aspect Ratio | 20:9 | 20:9 |
| Display Technology | AMOLED Best value | IPS LCD |
| Peak Display Brightness | 4,500 nits | — |
| Display Diagonal | 6.78″ Best value | 6.67″ |
| Display Horizontal Resolution | 1,224 px Best value | 720 px |
| Display Vertical Resolution | 2,720 px Best value | 1,600 px |
| Display Pixel Density | 440 ppi Best value | 263 ppi |
| Display Refresh Rate | 144 Hz Best value | 120 Hz |
| Touch Sampling Rate | — | 120 Hz |
| Display Features | Gorilla Glass 7i, AMOLED, Hole-Punch Notch, Color LED Notifications, Scratch Resistant, Capacitive Touch, Multi-Touch, Frameless | Hole-Punch Notch, Scratch Resistant, Capacitive Touch, Multi-Touch, Frameless, Touchscreen |
Sensors
| Specification | Spark Slim | Spark 40 |
|---|---|---|
| Fingerprint Sensor Placement | Under Display | Side |
Sensor
| Specification | Spark Slim | Spark 40 |
|---|---|---|
| Sensor Features | Fingerprint Sensor, Accelerometer, Gyroscope, Light Sensor, Proximity Sensor, Cooling System, Compass | Cooling System, Fingerprint Sensor, Accelerometer, Gyroscope, Light Sensor, Proximity Sensor |
Software
| Specification | Spark Slim | Spark 40 |
|---|---|---|
| Operating System | Android 15 | Android 15 |
| OS Family | Android | Android |
| OS Version | 15 | 15 |
| Google Services | Yes | Yes |
| Widevine L1 | Yes | Yes |
Connectivity
| Specification | Spark Slim | Spark 40 |
|---|---|---|
| SIM Configurations | Dual Nano-SIM, Dual SIM Dual Standby | Dual Nano-SIM, Dual SIM Dual Standby |
| Cellular Bands | 2G GSM 850, 2G GSM 900, 2G GSM 1800, 2G GSM 1900, 3G UMTS B1, 3G UMTS B8, 4G LTE B1, 4G LTE B3, 4G LTE B5, 4G LTE B8, 4G LTE B28A, 4G LTE B38, 4G LTE B40, 4G LTE B41, 5G NR n1, 5G NR n3, 5G NR n5, 5G NR n8, 5G NR n28a, 5G NR n40, 5G NR n41, 5G NR n77, 5G NR n78 | 2G GSM 1900, 2G GSM 1800, 2G GSM 850, 2G GSM 900, 3G UMTS B1, 3G UMTS B5, 3G UMTS B8, 4G LTE B1, 4G LTE B2, 4G LTE B3, 4G LTE B5, 4G LTE B7, 4G LTE B8, 4G LTE B20, 4G LTE B38, 4G LTE B40, 4G LTE B41 |
| Cellular Technologies | GSM, HSPA, LTE | 4G, LTE |
| Wi-Fi Standards | Wi-Fi 802.11a/b/g, Wi-Fi 4 (802.11n), Wi-Fi 5 (802.11ac) | Wi-Fi 802.11a/b/g/n/ac, Wi-Fi 5 (802.11ac) |
| Wi-Fi Features | Dual Band, Wi-Fi Hotspot, Wi-Fi Direct, Wi-Fi Display | Dual Band, Wi-Fi Hotspot, Wi-Fi Direct, Wi-Fi Display |
| Bluetooth Version | Bluetooth 5.4 Best value | Bluetooth 5.3 |
| Bluetooth Profiles | A2DP, EDR, HID, LE | A2DP |
| Navigation Systems | GPS, A-GPS, GLONASS, Galileo, BeiDou | GPS, A-GPS, GLONASS, BeiDou, Galileo |
| Connectivity Features | Infrared, NFC, FM Radio, USB Type-C, USB OTG, 3.5 mm Audio Jack, Computer Sync, OTA Sync, Tethering, VoLTE, USB Charging, USB Mass Storage | 3.5 mm Audio Jack, Computer Sync, Infrared, OTA Sync, FM Radio, Tethering, VoLTE, USB Charging, USB Mass Storage, USB Host 2.0, USB OTG, USB Type-C |
| Max. download speed | — | 300 Mbps |
| Max. upload speed | — | 100 Mbps |
Audio
| Specification | Spark Slim | Spark 40 |
|---|---|---|
| Audio Features | Stereo Speakers, Dolby Atmos, A2DP, EDR, HID, LE | DTS, DTS:X, Stereo Speakers |
Technical
| Specification | Spark Slim | Spark 40 |
|---|---|---|
| Model numbers | KM7k | — |
