| HTC Desire 21 Pro 5G |
Oppo A3s |
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| Hardware and OS | HTC Desire 21 Pro 5G | Oppo A3s |
| Operating system | Android 10 | Android 8.1 (Oreo); ColorOS 5.1 |
| Processor | Octa-core (2x2.0 GHz Kryo 560 Gold & 6x1.7 GHz Kryo 560 Silver) | Octa-core 1.8 GHz Cortex-A53 |
| Chipset | Qualcomm SM6350 Snapdragon 690 5G (8 nm) | Qualcomm SDM450 Snapdragon 450 (14 nm) |
| GPU | Adreno 619 | Adreno 506 |
| Internal memory | 128GB 8GB RAM | 16 GB, 2 GB RAM |
| External memory | microSDXC (uses shared SIM slot) | microSD, up to 256 GB (dedicated slot) |
| Display | HTC Desire 21 Pro 5G | Oppo A3s |
| Type | IPS LCD, HDR10, 90Hz | IPS LCD |
| Size | 6.7 inches, 108.4 cm2 | 6.2" inc |
| Resolution | 1080 x 2400 pixels, 20:9 ratio | 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 | |
| Main Camera | HTC Desire 21 Pro 5G | Oppo A3s |
| Camera | 48 MP, f/1.8, 26mm (wide), 1/2.0", 0.8µm, PDAF 8 MP, f/2.2, 118?? (ultrawide) 2 MP, f/2.4, (macro) 5 MP, f/2.4, (depth) | |
| Features | Dual-LED flash, HDR, panorama | |
| Video | 4K@30fps, 1080p@30fps, gyro-EIS | |
| Selfie camera | HTC Desire 21 Pro 5G | Oppo A3s |
| Camera | 16 MP, (wide) | |
| Features | HDR | |
| Video | 1080p@30fps | |
| Connectivity | HTC Desire 21 Pro 5G | 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 | 1, 3, 5, 7, 8, 20, 28, 38, 39, 40, 41 | 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) | |
| 5G Network | 1, 3, 5, 7, 28, 41, 78 SA/NSA | |
| Bluetooth | 5.1, A2DP, LE | 4.2, A2DP, LE |
| Edge | Yes | |
| GPRS | Yes | |
| NFC | Yes | |
| GPS | Yes, with A-GPS, GLONASS, GALILEO, BDS | Yes, with A-GPS |
| Speed | HSPA 42.2/5.76 Mbps, LTE-A | HSPA 42.2/5.76 Mbps, LTE-A (2CA) Cat6 300/50 Mbps |
| Technology | GSM / HSPA / LTE / 5G | |
| USB | USB Type-C 2.0, USB On-The-Go | microUSB 2.0, USB On-The-Go |
| WLAN | Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot | |
| Camera | HTC Desire 21 Pro 5G | 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 | HTC Desire 21 Pro 5G | Oppo A3s |
| Loudspeaker | Yes | |
| 3.5 mm Jack | No | Yes |
| Radio | No | FM radio |
| Design | HTC Desire 21 Pro 5G | Oppo A3s |
| Colors | Blue, Purple | Red, Dark Purple |
| Dimensions | 167.1 x 78.1 x 9.4 mm (6.58 x 3.07 x 0.37 in) | 156.2 x 75.6 x 8.2 mm |
| SIM | Hybrid Dual SIM (Nano-SIM, dual stand-by) | |
| Weight | 205 g (7.23 oz) | 168 g |
| Features | HTC Desire 21 Pro 5G | Oppo A3s |
| Sensors | Fingerprint (side-mounted), accelerometer, gyro, proximity, compass | |
| Battery | HTC Desire 21 Pro 5G | Oppo A3s |
| Type | Li-Po 5000 mAh, non-removable | |
| Charging | Fast charging 18W Quick Charge 4.0 | |
| Battery capacity | 4230 mAh, Non-removable Li-Ion | |
| Other | HTC Desire 21 Pro 5G | Oppo A3s |
| Release date | 2018, July | |
| Sensors | Accelerometer, proximity, compass |
