Samsung Galaxy A21
#3196
Xiaomi Redmi Note 7
#2340Category Breakdown
Samsung Galaxy A21
Xiaomi Redmi Note 7
Performance
67.569.9
Camera
19.162.6
Display
56.558.9
Battery
28.128.1
Build
82.989.7
Connectivity
67.357.7
Audio
8.98.9
Overall
43.149.8
Summary
- The Samsung Galaxy A21 features a larger 6.5-inch IPS LCD display with a resolution of 720 x 1600 pixels, while the Xiaomi Redmi Note 7 has a 6.3-inch IPS LCD with a higher resolution of 1080 x 2340 pixels, resulting in better pixel density.
- In terms of performance, the Galaxy A21 is powered by the Mediatek Helio P35 chipset, whereas the Redmi Note 7 uses the more powerful Snapdragon 660.
- The camera capabilities also differ significantly, with the A21 offering a 16 MP quad-camera setup compared to the Redmi Note 7's 48 MP dual-camera system, which supports higher video frame rates.
- Both devices have a 4000 mAh battery, but the Redmi Note 7 supports slightly faster charging at 18W.
- Build quality favors the Redmi Note 7 with Gorilla Glass on both the front and back, while the A21 has a glass front and plastic back.
- Lastly, the Galaxy A21 runs on Android 10 with One UI 2.0, while the Redmi Note 7 initially launched with Android 9.0 but is planned for an upgrade to Android 10 with MIUI 12.
Side-by-side Specification Comparison
Samsung Galaxy A21
Xiaomi Redmi Note 7
General
Release Date
2020, April 08
2019, February 28
Announced
2020, April 08
2019, January 10
Description
Versions: SM-A215U (USA); SM-A215U1 (USA Unlocked)
Versions: Global market (48+5 MP); India (12+2 MP)
Display
Size
6.5"
6.3"
Type
IPS LCD
IPS LCD
Resolution
720 x 1600 pixels, 20:9 ratio (~270 ppi density)
1080 x 2340 pixels, 19.5:9 ratio (~409 ppi density)
PPI
720
1080
Refresh Rate
60Hz
60Hz
HDR Support
✗
✗
Protection
N/A
Corning Gorilla Glass 5
Performance
Chipset
Mediatek MT6765 Helio P35 (12 nm)
Qualcomm SDM660 Snapdragon 660 (14 nm)
CPU
Octa-core (4x2.35 GHz Cortex-A53 & 4x1.8 GHz Cortex-A53)
Octa-core (4x2.2 GHz Kryo 260 Gold & 4x1.8 GHz Kryo 260 Silver)
GPU
PowerVR GE8320
Adreno 512
Memory
32GB 3GB RAM
32GB 3GB RAM, 64GB 4GB RAM, 64GB 6GB RAM, 128GB 4GB RAM
Expandable Storage
✗
✗
Card Slot
microSDXC (dedicated slot)
microSDXC (uses shared SIM slot)
Camera
Main Camera
16 MP, f/1.8, (wide), 1/3.06", 1.0µm, PDAF8 MP, f/2.2, (ultrawide), 1/4.0", 1.12µm2 MP, f/2.4, (macro)2 MP, f/2.4, (depth)
48 MP, f/1.8, (wide), 1/2.0", 0.8µm, PDAF5 MP, f/2.2, (depth)or12 MP, f/2.2, (wide), 1/2.9", 1.25µm, PDAF2 MP, f/2.4, (depth)
Main Camera Features
LED flash, panorama, HDR
Dual-LED flash, HDR, panorama
Front Camera
13 MP, f/2.0, (wide), 1/3.1", 1.12µm
13 MP, f/2.0, (wide), 1/3.1", 1.12µm
Front Camera Features
N/A
HDR
Video Recording
1080p@30fps
1080p@30/60/120fps, (gyro-EIS)
Selfie Video
1080p@30fps
1080p@30fps
Optical Stabilization
✗
✗
Night Mode
✗
✗
Raw Photo Support
✗
✗
Battery
Capacity
4000 mAh
4000 mAh
Battery Details
Li-Po 4000 mAh
Li-Po 4000 mAh, non-removable
Charging Details
15W wired
18W wired, QC4
Fast Charging
✗
✗
Wireless Charging
✗
✗
Build & Safety
Dimensions
167.8 x 76.7 x 8.1 mm (6.61 x 3.02 x 0.32 in)
159.2 x 75.2 x 8.1 mm (6.27 x 2.96 x 0.32 in)
Weight
193 g
186 g
Materials
Glass front, plastic back, plastic frame
Glass front (Gorilla Glass 5), glass back (Gorilla Glass 5), plastic frame
Colors
Black
Blue, Black, Twilight Gold, White
Foldable
✗
✗
SAR
1.27 W/kg (head) 0.60 W/kg (body)
1.15 W/kg (head) 1.17 W/kg (body)
Connectivity
SIM
Nano-SIMNano-SIM + Nano-SIM
Nano-SIM + Nano-SIM
Network
GSM / CDMA / HSPA / EVDO / LTE
GSM / HSPA / LTE
Network Speed
HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps
HSPA 42.2/5.76 Mbps, LTE (2CA) Cat12 600/150 Mbps
5G
✗
✗
4G
✓
✓
WiFi
Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct
Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct
Bluetooth
5.0, A2DP, LE
5.0, A2DP, LE
NFC
✓
✗
USB
USB Type-C 2.0
USB Type-C 2.0
IR Blaster
✗
✗
Headphone Jack
✓
✓
Radio
✗
✗
Positioning
GPS, GLONASS, BDS
GPS, GLONASS, BDS
Audio
Stereo Speakers
✗
✗
Loudspeaker
Yes
Yes
Audio Jack
Yes
Yes
Software & Security
Operating System
Android 10, One UI 2.0
Android 9.0 (Pie), planned upgrade to Android 10, MIUI 12
Fingerprint
✓
✓
Face Unlock
✗
✗
Sensors
Fingerprint (rear-mounted), accelerometer, gyro, proximity, compass
Fingerprint (rear-mounted), accelerometer, gyro, proximity, compass