Oppo A91 vs Samsung Galaxy A21s
General Info
| Manufacturer | |
| Oppo | Samsung |
| Announced | |
| 2019, December | Expected Announcement - May 2020 |
| Status | |
| Coming soon. Exp. release 2019, December 26 | Rumored |
| Colors | |
| Black, Blue, Red | Black, White, Blue |
| Form Factor | |
| Candybar | Candybar |
| Dimension | |
|
7.9 mm thickness (0.31 in thickness) |
8.9 mm thickness (0.35 in thickness) |
| Weight | |
| 172 g (6.07 oz) | 191 g (6.74 oz) |
| SIM Type | |
| Dual SIM (Nano-SIM, dual stand-by) | Single SIM (Nano-SIM), Dual SIM (Nano-SIM, dual stand-by) |
| 2G Network | |
| GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 CDMA 800 & TD-SCDMA |
GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 (dual-SIM model only) |
| 3G Network | |
| HSDPA 850 / 1700(AWS) / 1900 / 2100 | HSDPA 850 / 900 / 1900 / 2100 |
| 4G Network | |
| LTE band 1(2100), 3(1800), 4(1700/2100), 5(850), 8(900), 34(2000), 38(2600), 39(1900), 40(2300), 41(2500) | LTE |
| Messaging | |
| Build Features | |
| - Fingerprint Sensor(In-display) |
- Fingerprint Sensor |
Display
Hardware and OS
| OS | |
| Android 9.0 (Pie) | Android 10.0 |
| User Interface | |
| ColorOS 6.1 | One UI 2.0 |
| Processor | |
| Octa-core (4x2.1 GHz Cortex-A73 & 4x2.0 GHz Cortex-A53), Mediatek MT6771V Helio P70 (12nm) [Similar] | Octa-core 2.0 GHz, Exynos 850 [Similar] |
| GPU | |
| Mali-G72 MP3 [Similar] | - |
| RAM | |
| 8 GB [Browse Similar] | 3 GB [Browse Similar] |
| Internal Memory | |
| 128 GB | 64 GB |
| External Memory | |
| microSD, up to 256 GB (dedicated slot) | microSDXC |
Camera
| Rear Camera | |
| 48 MP + 8 MP + 2 MP + 2 MP [Similar] | 48 MP + 8 MP + 2 MP [Similar] |
| Flash | |
| LED flash | LED Flash |
| Features | |
| 48 MP, f/1.8, 26mm (wide), 1/2.0", 0.8µm, PDAF 8 MP, f/2.2, 13mm (ultrawide), 1/4.0", 1.12µm 2 MP, f/2.4, 1/5", 1.75µm (dedicated macro camera) 2 MP, f/2.4, 1/5", 1.75µm, depth sensor HDR |
48 MP, f/2.0, 26mm (wide), 1/2.0", 0.8µm, PDAF 8 MP, f/2.4, (ultrawide), 1/4.0", 1.12µm 2 MP, f/2.4, (macro) Panorama, HDR |
| Video | |
| 2160p@30fps | 1080p@30fps |
| Front Camera | |
|
16 MP, f/2.0, 26mm (wide), 1/3.1", 1.0µm HDR 1080p@30fps [Similar] |
13 MP, f/2.3, 29mm (normal), 1/3.1", 1.12µm HDR, Panorama 1080p@30fps [Similar] |
Multimedia
| 3.5mm Jack | |
| Radio | |
| FM radio | - |
| Games | |
| Yes + Downloadable | Yes + Downloadable |
| Loud Speaker | |
Connectivity and Data Rate
| GPRS | |
| Yes | Yes |
| Edge | |
| Yes | Yes |
| 3G | |
| HSPA 42.2/11.5 Mbps, LTE-A | HSPA 42.2/5.76 Mbps, LTE-A |
| Bluetooth | |
| 5.0, A2DP, LE, aptX HD | 5.0, A2DP, LE |
| Wi-Fi | |
| Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot | Wi-Fi 802.11 b/g/n, Wi-Fi Direct, hotspot |
| USB | |
| 2.0, Type-C 1.0 reversible connector, USB On-The-Go | Yes |
| GPS | |
| Yes, with A-GPS | Yes, with A-GPS |
| Browser | |
| Yes | Yes |
User Memory
| Internal | |
| 128 GB, 8 GB RAM | 64 GB, 3 GB RAM or 32 GB, 3 GB RAM |
| Expandable Storage | |
| microSD, up to 256 GB (dedicated slot) | microSDXC |
| USB OTG | |
| Supported | Supported |
Sensors
| Fingerprint | |
| Proximity Sensor | |
| Accelerometer Sensor | |
| Magnetic-field Sensor (Compass) | |
| Gyroscope Sensor | |
| NFC | |
Battery
| Type | |
| Non-removable Li-Po Battery Fast battery charging 30W |
Non-removable Li-Po Battery Battery Charging 10W |
| Capacity | |
| 4000 mAh | 5000 mAh |
| Stand by | |
| - | - |
| Talk Time | |
| - | - |