Compare phones
| Global Score | |
| 65 | 71.3 |
| Basic Information | |
| Acer | Xiaomi |
| Android 4.2.2 | Android |
| -- | 2020-06-18 |
| 6.54 x 3.39 x 0.35 inches | 6.43 x 3.03 x 0.36 inches |
| 8.15 ounces | 6.98 ounces |
| Black and Red | Carbon gray, Ocean green and Sunset purple |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| $ 249.00 | $ 189.00 |
| Display / Screen | |
| 6 inches | 6.5 inches |
| 1920 x 1080 pixels (Full HD) | 2340 x 1080 pixels |
| IPS LCD | IPS LCD |
| 367 pixels per inch | 396 pixels per inch |
| Capacitive, Multi-touch | No touch screen |
| 8.3 | 8 |
| Performance | |
| Qualcomm Snapdragon 800 chipset | MediaTek Helio G80 chipset |
| Krait 400 (Quad-Core 2200 MHz) processor | Arm Cortex-A75 and Arm Cortex-A55, 64-bit, 12 nm (Octa-Core 2000 MHz) processor |
| 2 GB RAM | 3 GB RAM |
| Adreno 330 (450 MHz) GPU | Mali G52 MC2 GPU |
| 9.18 | 9.09 |
| Storage | |
| 16 GB internal memory | 32 GB internal memory |
| microSD, microSDHC, microSDXC external memory slot | No SD card slot |
| 4.4 | 5.8 |
| Camera | |
| 13.00 MP + 2.00 MP | 13.00 MP + 8.00 MP |
| f/2.20 aperture | f/2.20 aperture |
| 28.00mm focal length | -- |
| 3840 x 2160 (4K) video resolution | 1920 x 1080 (Full HD) video resolution |
| 7.81 | 7.92 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| LTE (4G), HSPA+ (4G), HSDPA, HSUPA, EDGE, GPRS and GSM | LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| Micro SIM | Nano SIM, Dual SIM |
| 7 | 6.7 |
| Battery Life | |
| 3300mAh Li-Polymer Battery | 5020mAh Battery |
| Removable Battery | Non-Removable Battery |
| 5.28 | 6.8 |
| Other Features | |
| Bluetooth 4.0 | Bluetooth 5.0 |
| GPS | GPS |
| NFC | NFC |
| -- | Infra-red port |
| -- | Fingerprint ID Scanner |
| Accelerometer, Compass, Light Sensor and Proximity Sensor | Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
| -- | FM Radio |
Comparison review
Xiaomi Redmi 9 is slightly better than Acer Liquid S2, having a 71.3 score against 65. The Xiaomi Redmi 9 is a a bit thicker but somewhat lighter device than the Acer Liquid S2. Xiaomi Redmi 9 has Android OS, while Acer Liquid S2 has Android 4.2.2 OS. Acer Liquid S2 features a little bit better processing power than Xiaomi Redmi 9, because although it has 1 GB lesser RAM and an inferior number of cores , it also counts with an additional graphics processor.
The Acer Liquid S2 counts with a bit sharper display than Xiaomi Redmi 9, although it has a little bit less pixels per inch in the screen, a little bit smaller screen and a little bit lower resolution of 1080 x 1920 pixels. The Xiaomi Redmi 9 has a superior storage capacity for games and applications than Acer Liquid S2, because although it has no SD memory card expansion slot, it also counts with more internal storage.
The Xiaomi Redmi 9 features a superior battery performance than Acer Liquid S2, because it has a 52 percent more battery size. Xiaomi Redmi 9 captures slightly better photographs and videos than Acer Liquid S2. They have the same video frame rates, the same 1920x1080 (Full HD) video resolution, a 13 MP resolution camera and a same size aperture.
Despite of being the best phone in this comparison, Xiaomi Redmi 9 is also a lot cheaper, which makes this phone a great choice.
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