| Hardware and OS | Sony Xperia XZ Compact | Oppo A3s |
| Operating system | Android 8.0 (Oreo), upgradable to Android 9.0 (Pie) | Android 8.1 (Oreo); ColorOS 5.1 |
| Processor | Octa-core (4x2.45 GHz Kryo & 4x1.9 GHz Kryo) | Octa-core 1.8 GHz Cortex-A53 |
| Chipset | Qualcomm MSM8998 Snapdragon 835 (10 nm) | Qualcomm SDM450 Snapdragon 450 (14 nm) |
| GPU | Adreno 540 | Adreno 506 |
| Internal memory | 32 GB, 4 GB RAM | 16 GB, 2 GB RAM |
| External memory | microSD, up to 512 GB (dedicated slot) | microSD, up to 256 GB (dedicated slot) |
| Display | Sony Xperia XZ Compact | Oppo A3s |
| Type | IPS LCD | IPS LCD |
| Size | 4.6" inc | 6.2" inc |
| Resolution | 720 x 1280 px | 720 x 1520 px |
| Touchscreen | capacitive touchscreen | capacitive touchscreen |
| Protection | Corning Gorilla Glass 5 | |
| Screen-to-Body Ratio | 70.7% | 81.2% |
| Display area | 58.3 cm2 | 95.9 cm2 |
| Display aspect ratio | 16:9 (height:width) | 19:9 (height:width) |
| Pixel Density | 319 PPI | 271 PPI |
| Colors | 16M | 16M |
| Other | Triluminos display
-X-Reality Engine | |
| Connectivity | Sony Xperia XZ Compact | Oppo A3s |
| 2G Network | GSM 850 / 900 / 1800 / 1900 | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 |
| 3G Network | HSDPA 800 / 850 / 900 / 1700(AWS) / 1900 / 2100 | HSDPA 850 / 900 / 2100 |
| 4G Network | LTE | LTE |
| Wi-Fi | Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, DLNA, hotspot | Wi-Fi 802.11 b/g/n, WiFi Direct, hotspot |
| Network | GSM / HSPA / LTE | GSM / HSPA / LTE |
| SIM card | Nano-SIM | Dual SIM (Nano-SIM, dual stand-by) |
| Bluetooth | 5.0, A2DP, aptX HD, LE | 4.2, A2DP, LE |
| Edge | Yes | Yes |
| GPRS | Yes | Yes |
| GPS | Yes, with A-GPS, GLONASS, BDS, GALILEO | Yes, with A-GPS |
| Speed | HSPA 42.2/5.76 Mbps, LTE-A (4CA) Cat15 800/75 Mbps | HSPA 42.2/5.76 Mbps, LTE-A (2CA) Cat6 300/50 Mbps |
| USB | 2.0, Type-C 1.0 reversible connector; USB Host | microUSB 2.0, USB On-The-Go |
| NFC | Yes | |
| Camera | Sony Xperia XZ Compact | Oppo A3s |
| Main camera | 19 MP, Single | 13 MP, Dual |
| Specs | 19 MP, f/2.0, 25mm (wide), 1/2.3', 1.22µm, predictive PDAF & laser 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, 1080p@30fps (gyro-EIS), 720p@960fps | 1080p@30fps |
| Selfie camera | 8 MP, Single | 8 MP, Single |
| Multimedia | Sony Xperia XZ Compact | Oppo A3s |
| 3.5 mm Jack | Yes | Yes |
| Radio | No | FM radio |
| Design | Sony Xperia XZ Compact | Oppo A3s |
| Colors | Black, White Silver, Horizon Blue, Twilight Pink | Red, Dark Purple |
| Dimensions | 129 x 64 x 9.3 mm | 156.2 x 75.6 x 8.2 mm |
| Weight | 140 g | 168 g |
| Body build | Glass fiber reinforced plastic body | |
| Battery | Sony Xperia XZ Compact | Oppo A3s |
| Battery capacity | 2700 mAh, Non-removable Li-Ion | 4230 mAh, Non-removable Li-Ion |
| Other | Sony Xperia XZ Compact | Oppo A3s |
| Release date | 2017, August | 2018, July |
| Sensors | Fingerprint (side-mounted), accelerometer, gyro, proximity, barometer, compass, color spectrum | Accelerometer, proximity, compass |
