| Hardware and OS | Samsung Galaxy A8 Star | Oppo A3s |
| Operating system | Android 8.0 Oreo OS | Android 8.1 (Oreo); ColorOS 5.1 |
| Processor | Octa-Core 4x 2.2 GHz Kryo 260, 4x 1.84 GHz Kryo 260 | Octa-core 1.8 GHz Cortex-A53 |
| Chipset | | Qualcomm SDM450 Snapdragon 450 (14 nm) |
| GPU | Qualcomm Adreno 512 | Adreno 506 |
| RAM | 4GB LPDDR4x | |
| Internal memory | | 16 GB, 2 GB RAM |
| Internal Storage | 64GB, microSD Support up to 400GB (Uses SIM 2 Slot) | |
| External memory | | microSD, up to 256 GB (dedicated slot) |
| Memory Card Slot | microSD, microSDHC, microSDXC | |
| User Interface | Yes with Modified Android | |
| Display | Samsung Galaxy A8 Star | Oppo A3s |
| Type | Super AMOLED, Capacitive Touchscreen | IPS LCD |
| Size | 6.3 inches Super AMOLED, FHD Screen With Multitouch & Gorilla Glass 5 | 6.2" inc |
| Resolution | 2220 x 1080 Pixels, 24 bit color depth | 720 x 1520 px |
| Touchscreen | Yes Multi Touch Support | capacitive touchscreen |
| Screen-to-Body Ratio | | 81.2% |
| Display area | | 95.9 cm2 |
| Display aspect ratio | | 19:9 (height:width) |
| Pixel Density | ~392 ppi | 271 PPI |
| Protection | Yes Support | |
| Colors | 16.7M Colors | 16M |
| Features | Super AMOLED FHD display, ~ 392 ppi, 2.5D Curved Glass Screen, Bezel-Less Screen | |
| Connectivity | Samsung Galaxy A8 Star | Oppo A3s |
| 2G Network | | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 |
| 3G Network | | HSDPA 850 / 900 / 2100 |
| 4G Network | LTE : 700 MHz Class 17, LTE : 850 / 900 / 2100 / 2600 MHz, LTE : 1700 / 2100 MHz, LTE-TDD : 1900 MHz (Band 39), LTE-TDD : 2300 MHz (Band 40), LTE-TDD : 2500 MHz (Band 41), LTE-TDD : 2600 MHz (Band 38), LTE : 700 MHz (Band 12) | LTE |
| Wi-Fi | Wi-Fi 802.11 a/b/g/n/ac, 802.11 n 5GHz, Dual Band, Wi-Fi Direct, Wi-Fi HotSpot | Wi-Fi 802.11 b/g/n, WiFi Direct, hotspot |
| NFC | yes | |
| Network | | GSM / HSPA / LTE |
| SIM card | | Dual SIM (Nano-SIM, dual stand-by) |
| Bluetooth | | 4.2, A2DP, LE |
| SIM | Standard SIM | |
| Edge | | Yes |
| Dual SIM | Dual Hybrid Nano SIM | |
| GPRS | | Yes |
| GPS | Yes, with GPS, A-GPS, GLONASS, Beidou | Yes, with A-GPS |
| Speed | LTE Cat 12 600 Mbps Download, 100 Mbps Upload, HSUPA 5.76 Mbps Upload, HSDPA 21 Mbps Download | HSPA 42.2/5.76 Mbps, LTE-A (2CA) Cat6 300/50 Mbps |
| USB | Type-C USB v2.0 with, OTG, Charging and Mass Storage Function | microUSB 2.0, USB On-The-Go |
| Camera | Samsung Galaxy A8 Star | Oppo A3s |
| Image | 4608 x 3456 Pixels | |
| Main camera | 16MP 24MP with LED Flash and AF Rear Camera | 13 MP, Dual |
| Specs | | 13 MP, f/2.2, AF
-2 MP, f/2.4, depth sensor |
| Features | Yes with Single LED Flash | LED flash, HDR, panorama |
| Video | | 1080p@30fps |
| Selfie camera | 24MP Front Camera with F2.0 Aperture | 8 MP, Single |
| Multimedia | Samsung Galaxy A8 Star | Oppo A3s |
| Loudspeaker | Yes with Speaker on the Bottom | |
| Video Playback | Up to 8 Hours | |
| Video Out | Yes With Wireless Media Link | |
| Ring Tones | WAV, AAC ringtones | |
| 3.5 mm Jack | yes | Yes |
| Radio | Yes, With FM Radio | FM radio |
| Design | Samsung Galaxy A8 Star | Oppo A3s |
| Colors | | Red, Dark Purple |
| Dimensions | 162.4 mm x 77 mm x 7.6 mm (LxWxH) | 156.2 x 75.6 x 8.2 mm |
| Weight | 191 Grams (With Battery) | 168 g |
| Battery | Samsung Galaxy A8 Star | Oppo A3s |
| Capacity | 3,700 mAh | |
| Placement | Non-Removable | |
| Battery capacity | | 4230 mAh, Non-removable Li-Ion |
| Other | Samsung Galaxy A8 Star | Oppo A3s |
| Release date | | 2018, July |
| Sensors | Proximity Sensor, Accelerometer, Compass, Ambient Light, Gyroscope, Barometer, Fingerprint | Accelerometer, proximity, compass |
