Tecno Spark 40 Pro vs Oppo A3x
Product
Price
149 USD
149 USD
Status
Available
Available
Brand
Tecno Mobiles
Oppo Mobiles
Model No
KM6
CPH2681
Launch Date
2025, September 16
2024, August 02
Website
Technology
GSM / HSPA / LTE
GSM / HSPA / LTE / 5G
2G bands
GSM 850 / 900 / 1800 / 1900
GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
3G bands
HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
HSDPA 900 / 2100
4G bands
1, 2, 3, 4, 5, 7, 8, 12, 20, 28, 38, 40, 41, 66
1, 3, 5, 8, 28, 40, 41
Speed
HSPA, LTE
HSPA, LTE, 5G
5G bands
1, 3, 5, 8, 28, 41, 77, 78 SA/NSA
Dimensions
163.7 x 75.9 x 6.7 mm (6.44 x 2.99 x 0.26 in)
165.7 x 76 x 7.7 mm (6.52 x 2.99 x 0.30 in)
Build
Glass front (Gorilla Glass 7i), plastic back, plastic frame
IP64 dust tight and water resistant (water splashes)
Drop resistant up to 1.5m
Panda glass
IP54, dust and splash resistant
MIL-STD-810H compliant*
SIM
Nano-SIM + Nano-SIM
Dual SIM (Nano-SIM, dual stand-by)
Colors
Ink Black, Moon Titanium, Lake Blue, Bamboo Green
Sparkle Black, Starlight White, Starry Purple
Weight
187 g (6.60 oz)
Type
AMOLED, 1B colors, 144Hz, 1600 nits (HBM), 4500 nits (peak)
IPS LCD, 120Hz, 1000 nits (HBM)
Size
6.78 inches, 111.0 cm2 (~89.3% screen-to-body ratio)
6.67 inches, 107.2 cm2 (~85.2% screen-to-body ratio)
Resolution
1224 x 2720 pixels, 20:9 ratio (~440 ppi density)
720 x 1604 pixels, 20:9 ratio (~264 ppi density)
OS
Android 15, HIOS 15.1
Android 14, ColorOS 14
Chipset
Mediatek Helio G100 Ultimate (6 nm)
Mediatek Dimensity 6300 (6 nm)
CPU
Octa-core (2x2.2 GHz Cortex-A76 & 6x2.0 GHz Cortex-A55)
Octa-core (2x2.4 GHz Cortex-A76 & 6x2.0 GHz Cortex-A55)
GPU
Mali-G57 MC2
Mali-G57 MC2
RAM
8GB
4GB
Storage
128GB/56GB
64GB/128GB
eMMC 5.1
Card Slot
microSDXC
microSDXC
Lens 1
50 MP, f/1.6, (wide), 1/2.8", 0.64µm, PDAF
Auxiliary lens
8 MP, f/2.0, (wide), PDAF
Features
Dual-LED flash, HDR
LED flash, HDR, panorama
Video
1440p@30fps, 1080p@30fps
1080p@30/60fps
Lens 2
Auxiliary lens
Lens 1
13 MP, f/2.2, (wide), 1/3.1", 1.12µm
5 MP, f/2.2, (wide)
Features
Dual-LED flash
Video
1080p@30fps
1080p@30fps
Capacity
5200 mAh
5100 mAh, non-removable
Charging
45W wired
10W reverse wired
45W wired, PD2.0, 50% in 30 min (advertised)
Sensors
Fingerprint (under display, optical), accelerometer, proximity, compass
Circle to Search
Fingerprint (side-mounted), accelerometer, proximity, compass
Loudspeaker
Yes, with stereo speakers
Yes
3.5mm jack
Yes
24-bit/192kHz Hi-Res & Hi-Res Wireless audio
Yes
WLAN
Wi-Fi 802.11 a/b/g/n/ac, dual-band
Wi-Fi 802.11 a/b/g/n/ac, dual-band
Bluetooth
5.3, A2DP, LE
5.3, A2DP, LE
GPS
Yes
GPS, GALILEO, GLONASS, BDS, QZSS
NFC
Yes (market/region dependent)
Radio
FM radio
USB
USB Type-C 2.0, OTG
USB Type-C 2.0, OTG