Oppo A91 |
Samsung Galaxy A31 |
| Oppo A91 | Samsung Galaxy A31 |
| Launch | |
|---|---|
| Release Date | |
| Dec, 2019 | Apr, 2020 |
| Status | |
| Available | Available |
| Body & Operating System | |
| Operating system | |
| Android 9.0 (Pie) | Android 10.0 |
| UI | |
| ColorOS 6.1 | One UI 2.0 |
| Dimensions | |
| 160.2 x 73.3 x 7.9 mm (6.31 x 2.89 x 0.31 in) | 159.3 x 73.1 x 8.6 mm (6.27 x 2.88 x 0.34 in) |
| Weight | |
| 172 g | 185 g |
| Body | |
| Glass front (Gorilla Glass 5), plastic back, plastic frame | NA |
| Color Options | |
| Dark Blue, Red, Blue | Prism Crush Black, Prism Crush Blue, Prism Crush Red, Prism Crush White |
| Display Specifications | |
| Technology | |
| AMOLED capacitive touchscreen, 16M colors | Super AMOLED capacitive touchscreen, 16M colors |
| Size | |
| 6.4 inches More devices with a similar display. > |
6.4 inches More devices with a similar display. > |
| Resolution | |
| Full HD (FHD) - 1080 x 2400 pixels, 20:9 ratio (~411 ppi density) | Full HD (FHD) - 1080 x 2400 pixels, 20:9 ratio (~411 ppi density) |
| Protection | |
| Corning Gorilla Glass 5, 430 nits typ. brightness | NA |
| Features | |
| NA | NA |
| Battery & Charging | |
| Capacity | |
| Non-removable Li-Po, 4025 mAh More devices with similar battery. > |
Non-removable Li-Po, 5000 mAh More devices with similar battery. > |
| Charging | |
| Fast battery charging 30W: 50% in 30 min (VOOC Flash Charge 4.0) | Fast charging 15W |
| Processing Power | |
| CPU | |
| Octa-core (4x2.1 GHz Cortex-A73 & 4x2.0 GHz Cortex-A53) | Octa-core (2x2.0 GHz & 6x1.7 GHz) |
| Chipset | |
| Mediatek MT6771V Helio P70 (12nm) | - |
| GPU | |
| Mali-G72 MP3 | - |
| Memory & Storage | |
| Ram | |
| 8GB RAM | 4/6GB RAM |
| Storage Memory | |
| 128GB Built-in, UFS 2.1 | 64/128GB Built-in |
| Memory Card | |
| microSD, up to 256 GB (dedicated slot) | microSD, up to 256GB (dedicated slot) |
| Cameras | |
| Rear/Back | |
| Quad 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 |
Quad 48 MP, f/2.0, (wide), 1/2.0", 0.8µm, PDAF 8 MP, f/2.2, 13mm (ultrawide), 1/4.0", 1.12µm 5 MP, f/2.4, (macro) 5 MP, f/2.4, (depth) |
| Features | |
| LED flash, HDR, panorama Video 2160p@30fps | LED flash, panorama, HDR Video Yes |
| Front | |
| 16 MP, f/2.0, 26mm (wide), 1/3.1", 1.0µm HDR Video 1080p@30fps |
20 MP, f/2.2, (wide) Video 1080p@30fps |
| Features | |
| NA | NA |
| Network | |
| SIM | |
| Dual SIM (Nano-SIM, dual stand-by) | Single SIM (Nano-SIM) or Dual SIM (Nano-SIM, dual stand-by) |
| Data | |
| GSM / CDMA / HSPA / LTE | GSM / HSPA / LTE |
| 2G Bands | |
|
SIM 1: GSM 850 / 900 / 1800 / 1900 SIM 2: GSM 850 / 900 / 1800 / 1900 CDMA 800 & TD-SCDMA |
SIM 1: GSM 850 / 900 / 1800 / 1900 SIM 2: GSM 850 / 900 / 1800 / 1900 - (Dual SIM model only) |
| 3G Bands | |
| HSDPA 850 / 1700(AWS) / 1900 / 2100 | HSDPA 850 / 900 / 1900 / 2100 |
| 4G Bands | |
| LTE band 1(2100), 3(1800),... | LTE band 1(2100), 2(1900),... |
| 5G Bands | |
| NO | NO |
| Connectivity | |
| WLAN (WIFI) | |
| Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot | Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot |
| Bluetooth | |
| 5.0, A2DP, LE, aptX HD | 5.0, A2DP, LE |
| GPS | |
| Yes, with A-GPS | Yes, with A-GPS, GLONASS, GALILEO, BDS |
| USB | |
| 2.0, Type-C 1.0 reversible connector, USB On-The-Go | 2.0, Type-C 1.0 reversible connector, USB On-The-Go |
| NFC | |
| No | No |
| Additional Features | |
| Sensors | |
| Fingerprint (under display, optical), accelerometer, gyro, proximity, compass | Fingerprint (under display, optical), accelerometer, gyro, proximity, compass |
| Extra | |
| NA | NA |
| Pricing | |
| Price | |
| US$ 289 | USD $207 |
| Resale Value | |
| High | Very High |
| Comparison Result | |
| Score | |
| 4 Point(s) | 5 Point(s) |
| Save Comparison | |