| Hardware and OS | Samsung Galaxy Note5 Duos | Oppo A3s |
| Operating system | Android 5.1.1 (Lollipop), upgradable to 7.0 (Nougat) | Android 8.1 (Oreo); ColorOS 5.1 |
| Processor | Octa-core (4x2.1 GHz Cortex-A57 & 4x1.5 GHz Cortex-A53) | Octa-core 1.8 GHz Cortex-A53 |
| Chipset | Exynos 7420 Octa (14 nm) | Qualcomm SDM450 Snapdragon 450 (14 nm) |
| GPU | Mali-T760MP8 | Adreno 506 |
| Internal memory | 32/64 GB, 4 GB RAM | 16 GB, 2 GB RAM |
| External memory | No | microSD, up to 256 GB (dedicated slot) |
| Display | Samsung Galaxy Note5 Duos | Oppo A3s |
| Type | Super AMOLED | IPS LCD |
| Size | 5.7" inc | 6.2" inc |
| Resolution | 1440 x 2560 px | 720 x 1520 px |
| Touchscreen | capacitive touchscreen | capacitive touchscreen |
| Protection | Corning Gorilla Glass 4 | |
| Screen-to-Body Ratio | 76.8% | 81.2% |
| Display area | 89.6 cm2 | 95.9 cm2 |
| Display aspect ratio | 16:9 (height:width) | 19:9 (height:width) |
| Pixel Density | 515 PPI | 271 PPI |
| Colors | 16M | 16M |
| Connectivity | Samsung Galaxy Note5 Duos | Oppo A3s |
| 2G Network | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 |
| 3G Network | HSDPA 850 / 900 / 1900 / 2100 - N9208, N920C | HSDPA 850 / 900 / 2100 |
| 4G Network | LTE band 1(2100), 2(1900), 3(1800), 4(1700/2100), 5(850), 7(2600), 8(900), 12(700), 17(700), 18(800), 19(800), 25(1900), 26(850), 28(700), 38(2600), 39(1900), 40(2300), 41(2500) - N9208, N9200 | LTE |
| Wi-Fi | Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot | Wi-Fi 802.11 b/g/n, WiFi Direct, hotspot |
| Network | GSM / HSPA / LTE | GSM / HSPA / LTE |
| SIM card | Dual SIM (Nano-SIM, dual stand-by) | Dual SIM (Nano-SIM, dual stand-by) |
| Bluetooth | 4.2, A2DP, EDR, LE | 4.2, A2DP, LE |
| Edge | Yes | Yes |
| GPRS | Yes | Yes |
| GPS | Yes, with A-GPS, GLONASS, BDS | Yes, with A-GPS |
| Speed | HSPA 42.2/5.76 Mbps, LTE-A Cat6 300/50 Mbps/ LTE-A (3CA) Cat9 450/50 Mbps | HSPA 42.2/5.76 Mbps, LTE-A (2CA) Cat6 300/50 Mbps |
| USB | microUSB 2.0, USB Host | microUSB 2.0, USB On-The-Go |
| NFC | Yes | |
| Camera | Samsung Galaxy Note5 Duos | Oppo A3s |
| Main camera | 16 MP, Single | 13 MP, Dual |
| Specs | 16 MP, f/1.9, 28mm (wide), 1/2.6', 1.12µm, OIS, AF | 13 MP, f/2.2, AF
-2 MP, f/2.4, depth sensor |
| Features | LED flash, panorama, HDR | LED flash, HDR, panorama |
| Video | 2160p@30fps, 1080p@60fps, dual-video rec. | 1080p@30fps |
| Selfie camera | 5 MP, Single | 8 MP, Single |
| Multimedia | Samsung Galaxy Note5 Duos | Oppo A3s |
| 3.5 mm Jack | Yes | Yes |
| Radio | No | FM radio |
| Design | Samsung Galaxy Note5 Duos | Oppo A3s |
| Colors | Black Sapphire, Gold Platinum, Silver Titan, White Pearl | Red, Dark Purple |
| Dimensions | 153.2 x 76.1 x 7.6 mm | 156.2 x 75.6 x 8.2 mm |
| Weight | 171 g | 168 g |
| Body build | Front/back glass (Gorilla Glass 4), aluminum frame | |
| Battery | Samsung Galaxy Note5 Duos | Oppo A3s |
| Battery capacity | 3000 mAh, Non-removable Li-Po | 4230 mAh, Non-removable Li-Ion |
| Battery life | Talking time- Up to 22 h (3G)
Music play - Up to 64 h | |
| Other | Samsung Galaxy Note5 Duos | Oppo A3s |
| Release date | 2015, August | 2018, July |
| Sensors | | Accelerometer, proximity, compass |
| SAR | SAR EU - 0.45 W/kg (head), 0.58 W/kg (body) | |
