| vivo S15 Pro |
Oppo A3s |
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| Hardware and OS | vivo S15 Pro | Oppo A3s |
| Operating system | Android 12, Origin OS Ocean | Android 8.1 (Oreo); ColorOS 5.1 |
| Processor | Octa-core (4x2.85 GHz Cortex-A78 & 4x2.0 GHz Cortex-A55) | Octa-core 1.8 GHz Cortex-A53 |
| Chipset | MediaTek Dimensity 8100 (5 nm) | Qualcomm SDM450 Snapdragon 450 (14 nm) |
| GPU | Mali-G610 MC6 | Adreno 506 |
| Internal memory | 256GB 8GB RAM, 256GB 12GB RAM | 16 GB, 2 GB RAM |
| External memory | No | microSD, up to 256 GB (dedicated slot) |
| Display | vivo S15 Pro | Oppo A3s |
| Type | AMOLED | IPS LCD |
| Size | 6.56" inc | 6.2" inc |
| Resolution | 1080 x 2376 px | 720 x 1520 px |
| Touchscreen | capacitive touchscreen | capacitive touchscreen |
| Display colors | 16M | |
| Screen-to-Body Ratio | 81.2% | |
| Screen area | 104.6 cm2 | |
| Display area | 95.9 cm2 | |
| Screen format | (height:width) | |
| Display aspect ratio | 19:9 (height:width) | |
| Screen to body ratio | 89.6% | |
| Pixel Density | 271 PPI | |
| PPI /points per inch/ | 0 PPI | |
| Colors | 16M | |
| Connectivity | vivo S15 Pro | Oppo A3s |
| 2G Network | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 | |
| 3G Network | HSDPA 850 / 900 / 2100 | |
| NFC | Yes | |
| 4G Network | LTE | |
| Wi-Fi | Wi-Fi 802.11 a/b/g/n/ac/6, dual-band, Wi-Fi Direct, hotspot | Wi-Fi 802.11 b/g/n, WiFi Direct, hotspot |
| Network | GSM / CDMA / HSPA / CDMA2000 / LTE / 5G | GSM / HSPA / LTE |
| SIM card | Dual SIM (Nano-SIM, dual stand-by) | Dual SIM (Nano-SIM, dual stand-by) |
| Bluetooth | 5.3, A2DP, LE, aptX HD | 4.2, A2DP, LE |
| Edge | Yes | Yes |
| GPRS | Yes | Yes |
| GPS | Yes, with A-GPS, GLONASS, GALILEO, BDS, QZSS | Yes, with A-GPS |
| Speed | HSPA 42.2/5.76 Mbps, LTE-A (2CA) Cat6 300/50 Mbps | |
| USB | USB Type-C 2.0, USB On-The-Go | microUSB 2.0, USB On-The-Go |
| Camera | vivo S15 Pro | Oppo A3s |
| Rear camera, main | 50 MP, Triple | |
| Camera specs | 50 MP, f/1.9, 24mm (wide), 1/1.56'', 1.0µm, PDAF, OIS -12 MP, f/2.2, 16mm, 116? (ultrawide) -2 MP, f/2.4, (depth) | |
| Functions | LED flash, HDR, panorama | |
| Main camera | 13 MP, Dual | |
| Specs | 13 MP, f/2.2, AF -2 MP, f/2.4, depth sensor | |
| Front camera, selfie | 32 MP, Single | |
| Features | LED flash, HDR, panorama | |
| Video | 4K@30fps, 1080p@30fps | 1080p@30fps |
| Specifications | 32 MP, f/2.5, (wide), AF | |
| Selfie camera | 8 MP, Single | |
| Multimedia | vivo S15 Pro | Oppo A3s |
| Headphone jack | No | |
| 3.5 mm Jack | Yes | |
| Radio | No | FM radio |
| Others | 24-bit/192kHz audio | |
| Design | vivo S15 Pro | Oppo A3s |
| Colors | Blue, Black | Red, Dark Purple |
| Dimensions (HxWxD) | 158.9 x 73.5 x 8.6 mm | 6.26 x 2.89 x 0.34 in | |
| Dimensions | 156.2 x 75.6 x 8.2 mm | |
| Weight | 188 g | 6.63 oz | 168 g |
| Battery | vivo S15 Pro | Oppo A3s |
| Battery capacity | 4230 mAh, Non-removable Li-Ion | |
| Battery | 4500 mAh, Li-Po, non-removable | |
| Other | vivo S15 Pro | Oppo A3s |
| Release date | 2018, July | |
| Sensors | Accelerometer, proximity, compass | |
| Other features | vivo S15 Pro | Oppo A3s |
| Sensors | Fingerprint (under display, optical), accelerometer, gyro, proximity, compass, color spectrum Fast charging 80W, 70% in 18 min |
