Samsung Galaxy A21s vs Xiaomi Redmi 9A Specs Comparison
Compare mobile phone specifications of up to three devices at once. Our specs comparison tool helps you find and compare the perfect phone for your needs.
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| Samsung Galaxy A21s | Xiaomi Redmi 9A |
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Released
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Jun 19, 2020
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Released
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Jul 15, 2020
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6.5-inch · 1600x720px
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6.5-inch · 1600x720px
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Quad camera
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Single camera
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3GB · 32GB
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2GB · 32GB
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5000 mAh
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5000 mAh
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| Check prices | Check prices |
| Check Accessories | Check Accessories |
Availability
| Officially announced | |
|---|---|
| May 15, 2020 | |
| Prices (MSRP) | |
| €240 | |
Design
| Dimensions | |
|---|---|
| 6.44 x 2.96 x 0.35 inches 163.7 x 75.3 x 8.9 mm |
6.49 x 3.03 x 0.35 inches 164.9 x 77.07 x 9 mm |
| Weight | |
| 6.77 oz / 192.0 g | 6.91 oz / 196.0 g |
| Materials | |
| Back: Plastic | |
| Materials & Colors | |
| Carbon grey, Sky blue, Ocean green | |
| Biometrics | |
| 2D Face unlock, Fingerprint (touch) | 2D Face unlock |
| Keys | |
| Right: Volume control, Lock/Unlock key | Right: Volume control, Lock/Unlock key |
| Colors | |
| Black, White, Blue, Red | |
Display
| Size | |
|---|---|
| 6.5-inch, 82.94% screen-to-body | 6.5-inch, 81.15% screen-to-body |
| Type | |
| TFT | IPS LCD |
| Resolution | |
| 1600x720px, 20:9 ratio, 270 PPI | 1600x720px, 20:9 ratio, 269 PPI |
PhoneArena Display Test
| Bright Max (20% APL) | |
|---|---|
| Untested | Untested |
| Bright Min | |
| 4.6 (Poor) | Untested |
Learn more on our
PhoneArena Display Test Results page.
Hardware
| System chip | |
|---|---|
| Samsung Exynos 850 | MediaTek Helio G25 (12 nm) |
| Processor | |
| Octa-core 8x2.0GHz Cortex-A55 |
Octa-core 2000 MHz Arm Cortex-A53 |
| GPU | |
| Mali-G76 | PowerVR GE8320 |
| Memory | |
| 3GB (LPDDR4)/32GB (eMMC 5.1) 4GB/64GB 6GB/64GB |
2GB (LPDDR4)/32GB (eMMC 5.1) |
| Storage expansion | |
| microSDXC up to 512 GB | microSDXC |
| OS | |
| Android (10) | Android (10) |
Battery
| Type | |
|---|---|
| 5000 mAh, Li - Polymer | 5000 mAh, Li - Polymer |
| Charging | |
| Fast charging | |
| Charge speed | |
| Wired: 10.0W | |
Battery Life Estimate
Untested
Browsing
Untested
Video
11h 9min
Gaming
7h 48min
Battery Life Estimate
Untested
Browsing
Untested
Video
Untested
Gaming
Untested
Camera
| Rear | |
|---|---|
| Quad camera | Single camera |
| Main camera | |
| 48 MP (PDAF) Aperture size: F2.0 Focal length: 26 mm Sensor size: 1/2" Pixel size: 0.8 μm |
13 MP (PDAF) |
| Second camera | |
| 8 MP (Ultra-wide) Aperture size: F2.2 Sensor size: 1/4" Pixel size: 1.12 μm |
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| Third camera | |
| 2 MP (Macro) Aperture size: F2.4 |
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| Fourth camera | |
| 2 MP (Depth information) Aperture size: F2.4 |
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| Flash | |
| LED | LED |
| Video recording | |
| 1080p (30 fps) | 1080p (60 fps) |
| Front | |
| 13 MP Video capture: 1080p (30 fps) |
5 MP (HDR) Video capture: 1080p |
Connectivity & Features
| Bluetooth | |
|---|---|
| 5.0 | 5.0 |
| WLAN | |
| dual-band Wi-Fi Direct, Hotspot 802.11 a, b, g, n, ac |
Yes Wi-Fi Direct, Hotspot 802.11 b, g, n |
| USB | |
| Type-C, USB 2.0 | microUSB, USB 2.0 |
| Sensors | |
| Accelerometer, Gyroscope, Proximity sensor | Accelerometer, Ambient light sensor, Proximity sensor |
| Location | |
| GPS, A-GPS, Glonass, Galileo, BeiDou, Cell ID, Wi-Fi positioning | GPS, A-GPS, Glonass, BeiDou, Cell ID, Wi-Fi positioning |
| Other | |
| NFC | |
Multimedia
| Headphones | |
|---|---|
| 3.5mm jack | 3.5mm jack |
| Speakers | |
| Earpiece, Loudspeaker | Earpiece, Loudspeaker |
| Screen mirroring | |
| Wireless screen share | Wireless screen share |
| Radio | |
| FM | |
Cellular
| LTE Bands | |
|---|---|
| 1, 2, 3, 5, 7, 8, 20, 28 | 1, 2, 3, 4, 5, 7, 8, 20, 28 |
| TDD Bands | |
| 38, 40, 41 | 38, 40, 41 |
| 3G Bands | |
| 1, 2, 5, 8 | 5, 8, 4, 2, 1 |
| Data Speed | |
| LTE-A, HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s | LTE-A, HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s |
| Dual SIM | |
| Yes | Yes |
| SIM type | |
| Nano SIM | Nano SIM |
| HD Voice | |
| Yes | |
| VoLTE | |
| Yes | |
Alternative variants
with 4GB RAM
| Memory | 4GB/64GB |
|---|---|
with 6GB RAM
| Memory | 6GB/64GB |
|---|---|
Discover more
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