| Acer Liquid A1 |
Xiaomi Redmi Note 9 Pro |
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| Hardware and OS | Acer Liquid A1 | Xiaomi Redmi Note 9 Pro |
| Operating system | Android 1.6 Donut | Android 10.0; MIUI 11 |
| Processor | Qualcomm QSD8250 Processor clock: 1.00 GHz Number of cores: 1 GPU: Adreno 200 | Octa-core (2x2.3 GHz Kryo 465 Gold & 6x1.8 GHz Kryo 465 Silver) |
| Chipset | Qualcomm SM7125 Snapdragon 720G (8 nm) | |
| RAM memory | 256 MB | |
| GPU | Adreno 618 | |
| Internal memory | 512 MB | 64GB 4GB RAM, 128GB 6GB RAM |
| Memory cards | yes microSD, microSDHC | |
| External memory | microSDXC (dedicated slot) | |
| Display | Acer Liquid A1 | Xiaomi Redmi Note 9 Pro |
| Display | Color / TFT 480 x 800 px (3.50") 267 ppi ~48.5% screen-to-body ratio | |
| Type | IPS LCD | |
| Display protection | yes | |
| Size | 6.67" inc | |
| Resolution | 1080 x 2400 px | |
| Protection | Corning Gorilla Glass 5 | |
| Touchscreen | yes | capacitive touchscreen |
| Screen-to-Body Ratio | 84.5% | |
| Display area | 107.4 cm2 | |
| Display aspect ratio | 20:9 (height:width) | |
| Pixel Density | 395 PPI | |
| Colors | 16M | |
| Other | 450 nits typ. brightness (advertised) | |
| Connectivity | Acer Liquid A1 | Xiaomi Redmi Note 9 Pro |
| NFC | yes | |
| WiFi | yes v802.11 b/g | |
| Hotspot WiFi | yes | |
| DLNA | yes | |
| IrDA | yes | |
| 2G Network | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 | |
| 3G Network | HSDPA 850 / 900 / 1900 / 2100 | |
| WAP | yes v2.0 | |
| 4G Network | LTE band 1(2100), 3(1800), 5(850), 8(900), 40(2300), 41(2500) | |
| Wi-Fi | Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot | |
| Network | GSM / HSPA / LTE | |
| SIM card | Dual SIM (Nano-SIM, dual stand-by) | |
| Bluetooth | yes v2.0 EDR | 5.0, A2DP, LE |
| Edge | yes class 10 | Yes |
| GPRS | yes class 10 | Yes |
| GPS | yes | Yes, with A-GPS, GLONASS, GALILEO, BDS, NavIC |
| Speed | HSPA 42.2/5.76 Mbps, LTE-A | |
| USB | yes v2.0 | 2.0, Type-C 1.0 reversible connector |
| Camera | Acer Liquid A1 | Xiaomi Redmi Note 9 Pro |
| Image Resolution | 2592x1944 px | |
| Flash | yes | |
| Digital zoom | yes | |
| Main camera | 5 Mpx | 48 MP, Quad |
| Specs | 48 MP, f/1.8, (wide), 1/2.25", 0.8µm, PDAF -8 MP, f/2.2, 13mm (ultrawide), 1/4.0", 1.12µm -5 MP, f/2.4, (macro), 1.12µm -2 MP, f/2.4, (depth) | |
| Features | LED flash, HDR, panorama | |
| Video | 2160p@30fps, 1080p@30/60/120fps, 720p@960fps, gyro-EIS | |
| Selfie camera | 16 MP, Single | |
| Multimedia | Acer Liquid A1 | Xiaomi Redmi Note 9 Pro |
| 3.5 mm Jack | Yes | |
| Radio | yes | FM radio, recording |
| Design | Acer Liquid A1 | Xiaomi Redmi Note 9 Pro |
| Colors | Aurora Blue, Glacier White, Interstellar Black | |
| Body build | Glass front (Gorilla Glass 5), glass back (Gorilla Glass 5), plastic frame | |
| Dimensions | 115.00 x 62.50 x 12.50 mm | 165.8 x 76.7 x 8.8 mm |
| Weight | 135.00 g | 209 g |
| Battery | Acer Liquid A1 | Xiaomi Redmi Note 9 Pro |
| Capacity | Li-Po 1350 mAh | |
| Quick battery charging | yes | |
| Wireless battery charging | yes | |
| Battery capacity | 5020 mAh, Non-removable Li-Po | |
| Other | Acer Liquid A1 | Xiaomi Redmi Note 9 Pro |
| Accelerometer | yes | |
| Altimeter | yes | |
| Barometer | yes | |
| Fingerprint scanner | yes | |
| Gravity | yes | |
| Gyroscope | yes | |
| Hall-effect | yes | |
| Hygrometer | yes | |
| Iris scanner | yes | |
| Magnetometer | yes | |
| Proximity | yes | |
| Thermometer | yes | |
| Release date | 2020, March 12 | |
| Sensors | Fingerprint (side-mounted), accelerometer, gyro, proximity, compass , Infrared port |
