Samsung Galaxy A9 (2018)
#2004
Xiaomi Redmi K20
#1502Category Breakdown
Samsung Galaxy A9 (2018)
Xiaomi Redmi K20
Performance
74.577.4
Camera
47.467.3
Display
82.883.7
Battery
27.128.1
Build
96.395.7
Connectivity
66.364.3
Audio
8.98.9
Overall
52.757.7
Summary
- The Samsung Galaxy A9 (2018) features a 6.3-inch Super AMOLED display with a resolution of 1080 x 2220 pixels, while the Xiaomi Redmi K20 has a slightly smaller 6.39-inch Super AMOLED display with HDR support and a resolution of 1080 x 2340 pixels.
- In terms of performance, the A9 is powered by the Snapdragon 660 chipset, whereas the K20 utilizes the more advanced Snapdragon 730, providing better efficiency and graphics performance.
- The A9's camera setup includes a 24 MP main sensor, while the K20 boasts a 48 MP main sensor, offering superior image quality.
- Battery capacity is also slightly higher in the K20 at 4000 mAh compared to the A9's 3800 mAh, both supporting 18W charging.
- Both devices are built with Gorilla Glass 5 and an aluminum frame, but the A9 runs on Android 8.0 with One UI, while the K20 operates on Android 9.0 with MIUI 12, reflecting a more recent software experience.
Side-by-side Specification Comparison
Samsung Galaxy A9 (2018)
Xiaomi Redmi K20
General
Release Date
2018
2019
Announced
2018
2019
Description
Also known as Samsung Galaxy A9 Star Pro, Samsung Galaxy A9sVersions: SM-A920F/DS (Global); SM-A9200 (China)
N/A
Display
Size
6.3"
6.39"
Type
Super AMOLED
Super AMOLED, HDR
Resolution
1080 x 2220 pixels, 18.5:9 ratio (~393 ppi density)
1080 x 2340 pixels, 19.5:9 ratio (~403 ppi density)
PPI
1080
1080
Refresh Rate
60Hz
60Hz
HDR Support
✗
✓
Protection
Corning Gorilla Glass 5
Corning Gorilla Glass 5
Performance
Chipset
Qualcomm SDM660 Snapdragon 660 (14 nm)
Qualcomm SDM730 Snapdragon 730 (8 nm)
CPU
Octa-core (4x2.2 GHz Kryo 260 Gold & 4x1.8 GHz Kryo 260 Silver)
Octa-core (2x2.2 GHz Kryo 470 Gold & 6x1.8 GHz Kryo 470 Silver)
GPU
Adreno 512
Adreno 618
Memory
64GB 6GB RAM, 64GB 8GB RAM, 128GB 6GB RAM, 128GB 8GB RAM
64GB 6GB RAM, 128GB 6GB RAM, 256GB 8GB RAM
Expandable Storage
✗
✗
Card Slot
microSDXC (dedicated slot)
No
Camera
Main Camera
24 MP, f/1.7, 27mm (wide), 1/2.8", 0.9µm, PDAF10 MP f/2.4, 52mm (telephoto), 1/3.9", 1.0µm, AF, 2x optical zoom8 MP, f/2.4, 12mm (ultrawide), 1/4.0", 1.12µm5 MP, f/2.2, (depth)
48 MP, f/1.8, 26mm (wide), 1/2.0", 0.8µm, PDAF8 MP, f/2.4, 53mm (telephoto), 1/4.0", 1.12µm, PDAF, 2x optical zoom13 MP, f/2.4, 12mm (ultrawide), 1/3.1", 1.12µm
Main Camera Features
LED flash, panorama, HDR
Dual-LED flash, HDR, panorama
Front Camera
24 MP, f/2.0, 27mm (wide), 1/2.8", 0.9µm
Motorized pop-up 20 MP, f/2.2, (wide), 1/3.4", 0.8µm
Front Camera Features
HDR
HDR
Video Recording
4K@30fps, 1080p@30fps
4K@30fps, 1080p@30/120/240fps, 1080p@960fps
Selfie Video
1080p@30fps
1080p@30fps
Optical Stabilization
✗
✗
Night Mode
✗
✗
Raw Photo Support
✗
✗
Battery
Capacity
3800 mAh
4000 mAh
Battery Details
Li-Ion 3800 mAh, non-removable
Li-Po 4000 mAh, non-removable
Charging Details
18W wired
18W wired
Fast Charging
✗
✗
Wireless Charging
✗
✗
Build & Safety
Dimensions
162.5 x 77 x 7.8 mm (6.40 x 3.03 x 0.31 in)
156.7 x 74.3 x 8.8 mm (6.17 x 2.93 x 0.35 in)
Weight
183 g
191 g
Materials
Glass front (Gorilla Glass 5), glass back (Gorilla Glass 5), aluminum frame
Glass front (Gorilla Glass 5), glass back (Gorilla Glass 5), aluminum frame
Colors
Caviar Black, Lemonade Blue, Bubblegum Pink
Carbon black, Red flame, Glacier blue, Pearl White
Foldable
✗
✗
SAR
0.27 W/kg (head) 0.84 W/kg (body)
1.07 W/kg (head) 0.72 W/kg (body)
Connectivity
SIM
Nano-SIM + Nano-SIM
Nano-SIM + Nano-SIM
Network
GSM / HSPA / LTE
GSM / HSPA / LTE
Network Speed
HSPA 42.2/5.76 Mbps, LTE (3CA) Cat9 450/50 Mbps
HSPA, LTE
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, aptX HD
NFC
✓
✓
USB
USB Type-C 2.0
USB Type-C 2.0, OTG
IR Blaster
✗
✗
Headphone Jack
✓
✓
Radio
✗
✗
Positioning
GPS, GLONASS, BDS, GALILEO
GPS, GLONASS, GALILEO, BDS
Audio
Stereo Speakers
✗
✗
Loudspeaker
Yes
Yes
Audio Jack
Yes
Yes
Software & Security
Operating System
Android 8.0 (Oreo), upgradable to Android 10, One UI
Android 9.0 (Pie), upgradable to Android 10, MIUI 12
Fingerprint
✓
✓
Face Unlock
✗
✗
Sensors
Fingerprint (rear-mounted), accelerometer, gyro, proximity, compass
Fingerprint (under display, optical), accelerometer, gyro, proximity, compass