| Nokia G21 |
Oppo A3s |
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| Hardware and OS | Nokia G21 | Oppo A3s |
| Operating system | Android v11 | Android 8.1 (Oreo); ColorOS 5.1 |
| Processor | 1.6 GHz, Octa Core Processor | Octa-core 1.8 GHz Cortex-A53 |
| Chipset | Unisoc T606 | Qualcomm SDM450 Snapdragon 450 (14 nm) |
| GPU | Adreno 506 | |
| Cores | 2x1.6 GHz Cortex-A75 & 6x1.6 GHz Cortex-A55 | |
| Internal memory | 64 GB | 16 GB, 2 GB RAM |
| RAM | 3 GB | |
| External memory | microSD, up to 256 GB (dedicated slot) | |
| Memory Card Slot | Yes | |
| Graphics | Mali-G57 MP1 | |
| Dual Sim | Yes | |
| Sim Size | Nano Nano SIM | |
| Sim Type | Dual Sim, GSM GSM | |
| Display | Nokia G21 | Oppo A3s |
| Type | IPS LCD | |
| Size | 6.2" inc | |
| Resolution | 720 x 1520 px | |
| Touchscreen | capacitive touchscreen | |
| Screen-to-Body Ratio | ~ 81.6% | 81.2% |
| Display area | 95.9 cm2 | |
| Screen Size | 6.5 inches, 720 x 1600 pixels | |
| Display aspect ratio | 20:9 | 19:9 (height:width) |
| Display Type | Color IPS LCD screen (16M) | |
| Pixel Density | ~270 PPI | 271 PPI |
| Colors | 16M | |
| Touch Screen | Yes, with Multitouch | |
| Connectivity | Nokia G21 | Oppo A3s |
| 2G Network | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 | |
| 3G Network | Yes | HSDPA 850 / 900 / 2100 |
| 4G Network | Yes | 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 | Yes, v5.0, A2DP, LE | 4.2, A2DP, LE |
| Edge | Yes | Yes |
| GPRS | Yes | Yes |
| GPS | Yes, with A-GPS, GLONASS, GALILEO | Yes, with A-GPS |
| USB Features | USB on-the-go | |
| Speed | HSPA 42.2/5.76 Mbps, LTE-A (2CA) Cat6 300/50 Mbps | |
| VoLTE | Yes, Dual Stand-By | |
| USB | Yes, USB-C v2.0 | microUSB 2.0, USB On-The-Go |
| Wifi | Yes, with wifi-hotspot | |
| Camera | Nokia G21 | Oppo A3s |
| Main camera | 50 MP f/1.8 (Wide Angle) 2 MP (Macro) 2 MP (Depth Sensor) with autofocus | 13 MP, Dual |
| Specs | 13 MP, f/2.2, AF -2 MP, f/2.4, depth sensor | |
| Video Recording | 1080p @ 30fps FHD | |
| Features | HDR, Panorama | LED flash, HDR, panorama |
| Flash | Yes, LED | |
| Video | 1080p@30fps | |
| Selfie camera | 8 MP f/2 (Wide Angle) | 8 MP, Single |
| Front Video Recording | 1080p @ 30fps FHD | |
| Multimedia | Nokia G21 | Oppo A3s |
| 3.5 mm Jack | Yes | |
| Headphone jack | Yes | |
| Radio | FM radio | |
| Yes | ||
| FM Radio | Yes, with FM Recording | |
| Music | Yes | |
| Video | Yes | |
| Browser | Yes | |
| Java | No | |
| Design | Nokia G21 | Oppo A3s |
| Colors | Red, Dark Purple | |
| Dimensions | 164.6 x 75.9 x 8.5 mm | 156.2 x 75.6 x 8.2 mm |
| Weight | 190 g | 168 g |
| Battery | Nokia G21 | Oppo A3s |
| Battery capacity | 5050 mAh, Li-Po Battery | 4230 mAh, Non-removable Li-Ion |
| Type | Non-Removable Battery | |
| Fast Charging | 18W Fast Charging | |
| Other | Nokia G21 | Oppo A3s |
| Release date | 2018, July | |
| Sensors | Accelerometer, proximity, compass |
