On this page we compare specs HTC U21 Qualcomm SDM765 Snapdragon 765G (7 nm) with Oppo A3s Octa-core 1.8 GHz Cortex-A53, we compare external dimensions, compare screens and performance, the amount of RAM and memory for storing media data, battery capacity and characteristics of photo cameras, compare the presence of various sensors and functions.
Hardware and OS | HTC U21 | Oppo A3s |
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Operating system | Android v10 (Q) | Android 8.1 (Oreo); ColorOS 5.1 |
Processor | Qualcomm SDM765 Snapdragon 765G (7 nm) | Octa-core 1.8 GHz Cortex-A53 |
Chipset | | Qualcomm SDM450 Snapdragon 450 (14 nm) |
RAM | 8 GB | |
GPU | | Adreno 506 |
Internal Storage | 256 GB | |
Internal memory | | 16 GB, 2 GB RAM |
External memory | | microSD, up to 256 GB (dedicated slot) |
Display | HTC U21 | Oppo A3s |
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Type | IPS LCD | IPS LCD |
Size | 6.8 inches | 6.2" inc |
Resolution | 1080 x 2400 Pixels | 720 x 1520 px |
Touchscreen | Yes, Capacitive Touchscreen, Multi-touch | capacitive touchscreen |
Screen-to-Body Ratio | | 81.2% |
Display area | | 95.9 cm2 |
Display aspect ratio | | 19:9 (height:width) |
Pixel Density | 378 ppi | 271 PPI |
Colors | | 16M |
Connectivity | HTC U21 | Oppo A3s |
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Network support | 5G , 4G , 3G, 2G | |
NFC | Yes | |
Dual SIM | Dual SIM, GSM GSM | |
2G Network | | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 |
SIM size | SIM1: Nano, SIM2: Nano | |
3G Network | | HSDPA 850 / 900 / 2100 |
USB connectivity | Mass storage device, USB charging | |
4G Network | | LTE |
Wi-Fi | Yes, Wi-Fi 802.11, ac/b/g/n/n 5GHz | 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 | 4.2, A2DP, LE |
Edge | | Yes |
GPRS | | Yes |
GPS | Yes, with A-GPS, Glonass | 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 | HTC U21 | Oppo A3s |
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Front camera resolution | 32 MP, f/2.0, (wide), 1/2.8", 0.8µm) | |
Camera features | Digital Zoom, Auto Flash, Face detection, Touch to focus | |
Flash | Yes, LED Flash | |
Autofocus | Yes | |
Video recording | Yes | |
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 U21 | Oppo A3s |
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Audio jack | 3.5 MM | |
Loudspeaker | Yes | |
3.5 mm Jack | | Yes |
Radio | | FM radio |
Design | HTC U21 | Oppo A3s |
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Colours | Green, White | |
Colors | | Red, Dark Purple |
Dimensions | | 156.2 x 75.6 x 8.2 mm |
Weight | | 168 g |
Battery | HTC U21 | Oppo A3s |
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Capacity | 5000 mAh | |
Type | Lithium Polymer | |
Battery capacity | | 4230 mAh, Non-removable Li-Ion |
Other | HTC U21 | Oppo A3s |
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Fingerprint sensor | Yes | |
Fingerprint sensor position | Rear | |
Other sensors | Accelerometer, Gyro, Proximity, Compass, SAR | |
Release date | | 2018, July |
Sensors | | Accelerometer, proximity, compass |