Samsung Galaxy A21
#3196
Xiaomi Redmi Note 7S
#2484Category Breakdown
Samsung Galaxy A21
Xiaomi Redmi Note 7S
Performance
67.569.8
Camera
19.162.6
Display
56.558.9
Battery
28.128.1
Build
82.975.4
Connectivity
67.357.7
Audio
8.98.9
Overall
43.148.6
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 7S has a 6.3-inch IPS LCD with a higher resolution of 1080 x 2340 pixels, resulting in a sharper image.
- In terms of performance, the A21 is powered by the Mediatek Helio P35 chipset, whereas the Redmi Note 7S utilizes the more capable Snapdragon 660.
- The camera system on the Redmi Note 7S is significantly superior, with a 48 MP main sensor compared to the A21's 16 MP, and it also supports higher video frame rates.
- Both phones have a 4000 mAh battery, but the Redmi Note 7S supports faster 18W charging compared to the A21's 15W.
- The A21 runs Android 10 with One UI 2.0, while the Redmi Note 7S initially launched with Android 9.0 but is planned for an upgrade to Android 10 with MIUI 12.
- Build quality favors the Redmi Note 7S with Gorilla Glass on both front and back, compared to the A21's glass front and plastic back.
Side-by-side Specification Comparison
Samsung Galaxy A21
Xiaomi Redmi Note 7S
General
Release Date
2020, April 08
2019
Announced
2020, April 08
2019
Description
Versions: SM-A215U (USA); SM-A215U1 (USA Unlocked)
For India
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
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)
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
Onyx Black, Sapphire Blue, Ruby Red, Astro White
Foldable
✗
✗
SAR
1.27 W/kg (head) 0.60 W/kg (body)
N/A
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