| Hardware and OS | Gigaset GX290 | Oppo A3s |
| Operating system | Pure Android 9.0 Pie | Android 8.1 (Oreo); ColorOS 5.1 |
| Processor | MediaTek Helio P23 Octa-Core MT6763 | Octa-core 1.8 GHz Cortex-A53 |
| Chipset | | Qualcomm SDM450 Snapdragon 450 (14 nm) |
| RAM | 3 GB | |
| GPU | | Adreno 506 |
| Internal Storage | 32 GB | |
| Internal memory | | 16 GB, 2 GB RAM |
| Memory Card Slot | Yes upto 256 GB | |
| External memory | | microSD, up to 256 GB (dedicated slot) |
| User Interface | Yes | |
| Display | Gigaset GX290 | Oppo A3s |
| Type | IPS | IPS LCD |
| Size | 6.1 inches | 6.2" inc |
| Resolution | 1560 x 720 Pixel | 720 x 1520 px |
| Touchscreen | Yes | capacitive touchscreen |
| Screen-to-Body Ratio | | 81.2% |
| Display area | | 95.9 cm2 |
| Display aspect ratio | | 19:9 (height:width) |
| Protection | Corning Gorilla glass 3 with scratch-resistant and anti-smudge surface | |
| Pixel Density | 283 ppi | 271 PPI |
| Features | Multi-Point (up to 5 touchpoints) | |
| Colors | 16M | 16M |
| Connectivity | Gigaset GX290 | Oppo A3s |
| 2G Network | | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 |
| 3G Network | | HSDPA 850 / 900 / 2100 |
| 4G Network | Yes | LTE |
| NFC | yes | |
| Wi-Fi | IEEE 802.11 b/g/n 2.4 GHz, 5 GHz | Wi-Fi 802.11 b/g/n, WiFi Direct, hotspot |
| Network | | GSM / HSPA / LTE |
| SIM card | | Dual SIM (Nano-SIM, dual stand-by) |
| SIM | Nano SIM | |
| Bluetooth | | 4.2, A2DP, LE |
| Dual SIM | 2 Nano SIM cards or 1 Nano SIM card and a micro SD Card | |
| Edge | | Yes |
| Wireless Charging | Wireless charging up to 15 W | |
| GPRS | | Yes |
| GPS | A-GPS, GPS, Glonass | Yes, with A-GPS |
| Speed | 800 / 850 / 900 / 1800 / 2100 / 2600 MHz | HSPA 42.2/5.76 Mbps, LTE-A (2CA) Cat6 300/50 Mbps |
| USB | 2.0 Type C | microUSB 2.0, USB On-The-Go |
| Camera | Gigaset GX290 | Oppo A3s |
| Image | Yes | |
| Main camera | 13 MP AF (SONY sensor), 2 MP dual rear camera with ArcSoftR solution | 13 MP, Dual |
| Specs | | 13 MP, f/2.2, AF
-2 MP, f/2.4, depth sensor |
| Features | Yes | LED flash, HDR, panorama |
| Video | | 1080p@30fps |
| Selfie camera | 8 MP with LED Flash Light | 8 MP, Single |
| Multimedia | Gigaset GX290 | Oppo A3s |
| Loudspeaker | Yes | |
| Handsfree | Yes | |
| Video Playback | Yes | |
| Video Out | Yes | |
| Ring Tones | Yes | |
| 3.5 mm Jack | yes | Yes |
| Radio | Yes | FM radio |
| Design | Gigaset GX290 | Oppo A3s |
| Colors | | Red, Dark Purple |
| Waterproof | No | |
| Dimensions | 162.4 mm (H), 79 mm (W), 15.3 mm (D) | 156.2 x 75.6 x 8.2 mm |
| Weight | 279 g | 168 g |
| Battery | Gigaset GX290 | Oppo A3s |
| Capacity | 6200 mAh / 3.85 V | |
| Battery capacity | | 4230 mAh, Non-removable Li-Ion |
| Other | Gigaset GX290 | Oppo A3s |
| Release date | | 2018, July |
| Sensors | Gravity sensor, Proximity sensor, Brightness sensor, Geometric sensor (E-compass), Gyroscope | Accelerometer, proximity, compass |
