| Sigma Mobile X-Treme PQ20 |
Oppo A3s |
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| Hardware and OS | Sigma Mobile X-Treme PQ20 | Oppo A3s |
| Operating system | Android 8.1 (Oreo); ColorOS 5.1 | |
| Processor | Octa-core 1.8 GHz Cortex-A53 | |
| Chipset | Qualcomm SDM450 Snapdragon 450 (14 nm) | |
| GPU | Adreno 506 | |
| Internal memory | 16 GB, 2 GB RAM | |
| External memory | microSD, up to 256 GB (dedicated slot) | |
| Hardware and OS Sigma X-Treme PQ20 | Sigma Mobile X-Treme PQ20 | Oppo A3s |
| Operating system | Android 8.1 Oreo | |
| Processor | MediaTek MT6580 Processor clock: 1.30 GHz Number of cores: 4 GPU: ARM Mali-400 MP2 500 MHz | |
| RAM memory | 1 GB | |
| Internal memory | 8 GB | |
| SIM cards standard | nanoSIM, nanoSIM | |
| Memory cards | yes microSD, microSDHC, microSDXC (up to 128 GB) | |
| Display | Sigma Mobile X-Treme PQ20 | Oppo A3s |
| Type | IPS LCD | |
| Size | 6.2" inc | |
| Resolution | 720 x 1520 px | |
| Touchscreen | capacitive touchscreen | |
| Screen-to-Body Ratio | 81.2% | |
| Display area | 95.9 cm2 | |
| Display aspect ratio | 19:9 (height:width) | |
| Pixel Density | 271 PPI | |
| Colors | 16M | |
| Display Sigma X-Treme PQ20 | Sigma Mobile X-Treme PQ20 | Oppo A3s |
| Display | Color / IPS TFT 16M colors 720 x 1280 px (5.00") 294 ppi ~59.6% screen-to-body ratio | |
| Display protection | Asahi Dragontrail | |
| Touchscreen | yes | |
| Connectivity Sigma X-Treme PQ20 | Sigma Mobile X-Treme PQ20 | Oppo A3s |
| NFC | yes | |
| Bluetooth | yes v4.0 | |
| GPS | yes | |
| GPRS | yes | |
| EDGE | yes | |
| WiFi | yes v802.11 b/g/n | |
| Hotspot WiFi | yes | |
| DLNA | yes | |
| IrDA | yes | |
| USB | yes v2.0 OTG | |
| WAP | yes v2.0 | |
| Connectivity | Sigma Mobile X-Treme PQ20 | Oppo A3s |
| 2G Network | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 | |
| 3G Network | HSDPA 850 / 900 / 2100 | |
| 4G Network | LTE | |
| Wi-Fi | Wi-Fi 802.11 b/g/n, WiFi Direct, hotspot | |
| Network | GSM / HSPA / LTE | |
| SIM card | Dual SIM (Nano-SIM, dual stand-by) | |
| Bluetooth | 4.2, A2DP, LE | |
| Edge | Yes | |
| GPRS | Yes | |
| GPS | Yes, with A-GPS | |
| Speed | HSPA 42.2/5.76 Mbps, LTE-A (2CA) Cat6 300/50 Mbps | |
| USB | microUSB 2.0, USB On-The-Go | |
| Camera Sigma X-Treme PQ20 | Sigma Mobile X-Treme PQ20 | Oppo A3s |
| Main camera | 8 Mpx | |
| Image Resolution | 3280x2464 px | |
| Flash | yes LED | |
| Digital zoom | yes | |
| Additional | AF, EIS | |
| Video formats | H.263, H.264, MPEG4 | |
| Selfie camera | 2 Mpx | |
| Camera | Sigma Mobile X-Treme PQ20 | Oppo A3s |
| Main camera | 13 MP, Dual | |
| Specs | 13 MP, f/2.2, AF -2 MP, f/2.4, depth sensor | |
| Features | LED flash, HDR, panorama | |
| Video | 1080p@30fps | |
| Selfie camera | 8 MP, Single | |
| Multimedia Sigma X-Treme PQ20 | Sigma Mobile X-Treme PQ20 | Oppo A3s |
| Radio | yes | |
| Multimedia | Sigma Mobile X-Treme PQ20 | Oppo A3s |
| 3.5 mm Jack | Yes | |
| Radio | FM radio | |
| Design Sigma X-Treme PQ20 | Sigma Mobile X-Treme PQ20 | Oppo A3s |
| Dimensions | 152.50 x 75.80 x 14.80 mm | |
| Weight | 232.00 g | |
| Waterproof | IP69 | |
| Design | Sigma Mobile X-Treme PQ20 | Oppo A3s |
| Colors | Red, Dark Purple | |
| Dimensions | 156.2 x 75.6 x 8.2 mm | |
| Weight | 168 g | |
| Battery Sigma X-Treme PQ20 | Sigma Mobile X-Treme PQ20 | Oppo A3s |
| Capacity | Li-Po 5000 mAh | |
| Quick battery charging | yes | |
| Wireless battery charging | yes | |
| Battery | Sigma Mobile X-Treme PQ20 | Oppo A3s |
| Battery capacity | 4230 mAh, Non-removable Li-Ion | |
| Other Sigma X-Treme PQ20 | Sigma Mobile X-Treme PQ20 | Oppo A3s |
| Accelerometer | yes | |
| Altimeter | yes | |
| Barometer | yes | |
| Fingerprint scanner | yes | |
| Gravity | yes | |
| Gyroscope | yes | |
| Hall-effect | yes | |
| Hygrometer | yes | |
| Iris scanner | yes | |
| Magnetometer | yes | |
| Proximity | yes | |
| Thermometer | yes | |
| Other | Sigma Mobile X-Treme PQ20 | Oppo A3s |
| Release date | 2018, July | |
| Sensors | Accelerometer, proximity, compass |
