| vivo X27 Pro |
Oppo A3s |
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| Hardware and OS | vivo X27 Pro | Oppo A3s |
| Operating system | Android 9.0 (Pie); Funtouch 9 | Android 8.1 (Oreo); ColorOS 5.1 |
| Processor | Octa-core (2x2.2 GHz 360 Gold & 6x1.7 GHz Kryo 360 Silver) | Octa-core 1.8 GHz Cortex-A53 |
| Chipset | Qualcomm SDM710 Snapdragon 710 (10 nm) | Qualcomm SDM450 Snapdragon 450 (14 nm) |
| GPU | Adreno 616 | Adreno 506 |
| Internal memory | 256 GB, 8 GB RAM | 16 GB, 2 GB RAM |
| External memory | No | microSD, up to 256 GB (dedicated slot) |
| Display | vivo X27 Pro | Oppo A3s |
| Type | Super AMOLED | IPS LCD |
| Size | 6.7" inc | 6.2" inc |
| Resolution | 1080 x 2460 px | 720 x 1520 px |
| Touchscreen | capacitive touchscreen | capacitive touchscreen |
| Screen-to-Body Ratio | 86.2% | 81.2% |
| Display area | 106.6 cm2 | 95.9 cm2 |
| Display aspect ratio | 19:9 (height:width) | |
| Pixel Density | 271 PPI | |
| Colors | 16M | 16M |
| Connectivity | vivo X27 Pro | 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 / 1700(AWS) / 1900 / 2100 | HSDPA 850 / 900 / 2100 |
| 4G Network | LTE band 1(2100), 2(1900), 3(1800), 4(1700/2100), 5(850), 8(900), 34(2000), 38(2600), 39(1900), 40(2300), 41(2500) | LTE |
| Wi-Fi | Wi-Fi 802.11 a/b/g/n/ac, dual-band, WiFi Direct, hotspot | Wi-Fi 802.11 b/g/n, WiFi Direct, hotspot |
| Network | GSM / CDMA / HSPA / LTE | GSM / HSPA / LTE |
| SIM card | Dual SIM (Nano-SIM, dual stand-by) | Dual SIM (Nano-SIM, dual stand-by) |
| Bluetooth | 5.0, A2DP, LE, EDR, aptX | 4.2, A2DP, LE |
| Edge | Yes | Yes |
| GPRS | Yes | Yes |
| NFC | Yes | |
| GPS | Yes, with A-GPS, GLONASS, BDS | Yes, with A-GPS |
| Speed | HSPA 42.2/5.76 Mbps, LTE-A (2CA) Cat12 600/50 Mbps | HSPA 42.2/5.76 Mbps, LTE-A (2CA) Cat6 300/50 Mbps |
| USB | 2.0, Type-C 1.0 reversible connector, USB On-The-Go | microUSB 2.0, USB On-The-Go |
| Camera | vivo X27 Pro | Oppo A3s |
| Main camera | 48 MP, Triple | 13 MP, Dual |
| Specs | 48 MP, f/1.8, (wide), 1/2", 0.8µm, PDAF -13 MP, f/2.2, 13mm (ultrawide) -2 MP, f/2.4, depth sensor | 13 MP, f/2.2, AF -2 MP, f/2.4, depth sensor |
| Features | LED flash, HDR, panorama | LED flash, HDR, panorama |
| Video | 2160p@30fps, 1080p@30/60fps | 1080p@30fps |
| Selfie camera | 32 MP, Single | 8 MP, Single |
| Multimedia | vivo X27 Pro | Oppo A3s |
| 3.5 mm Jack | Yes | Yes |
| Radio | FM radio | |
| Design | vivo X27 Pro | Oppo A3s |
| Colors | Black, White | Red, Dark Purple |
| Dimensions | 165.7 x 74.6 x 9 mm | 156.2 x 75.6 x 8.2 mm |
| Weight | 200 g | 168 g |
| Battery | vivo X27 Pro | Oppo A3s |
| Battery capacity | 4000 mAh, Non-removable Li-Po | 4230 mAh, Non-removable Li-Ion |
| Other | vivo X27 Pro | Oppo A3s |
| Release date | 2019, April | 2018, July |
| Sensors | Fingerprint (under display), accelerometer, gyro, proximity, compass | Accelerometer, proximity, compass |
