Samsung Galaxy A3 (2017)
#3406
vivo X21 UD
#2702Category Breakdown
Samsung Galaxy A3 (2017)
vivo X21 UD
Performance
56.979.6
Camera
19.119.1
Display
80.482.8
Battery
21.025.7
Build
78.476.2
Connectivity
62.859.3
Audio
8.98.9
Overall
41.346.8
Summary
- The Samsung Galaxy A3 (2017) features a compact build with Gorilla Glass 4 on both front and back, while the vivo X21 UD has a larger form factor with Gorilla Glass 3 on the front and an aluminum back.
- The A3's 4.7-inch Super AMOLED display has a resolution of 720 x 1280 pixels, whereas the X21 UD offers a 6.28-inch Super AMOLED display with a higher resolution of 1080 x 2280 pixels.
- Performance-wise, the A3 is powered by the Exynos 7870 Octa chipset with 2GB RAM, while the X21 UD utilizes the Snapdragon 660 with 6GB RAM, providing superior multitasking capabilities.
- In terms of camera, the A3 has a 13 MP rear camera and an 8 MP selfie camera, compared to the X21 UD's dual rear cameras (12 MP and 5 MP) and a 12 MP front camera, which enhances photography options.
- The A3 has a smaller 2350 mAh battery, while the X21 UD features a 3200 mAh battery with faster 18W charging.
- Software-wise, the A3 runs on Android 6.0.1, upgradable to 8.0, while the X21 UD comes with Android 8.1, offering a more recent software experience.
Side-by-side Specification Comparison
Samsung Galaxy A3 (2017)
vivo X21 UD
General
Release Date
2017
2018
Announced
2017
2018
Description
Versions: A320FL (Europe); A320F (UAE, TUR); A320F/DS (Global Dual-SIM); A320Y/DS (LATAM, IDN, THA); A320Y (NZL, MEX). Also known as Samsung Galaxy A3 (2017) Duos with dual-SIM card slots
N/A
Display
Size
4.7"
6.28"
Type
Super AMOLED
Super AMOLED
Resolution
720 x 1280 pixels, 16:9 ratio (~312 ppi density)
1080 x 2280 pixels, 19:9 ratio (~402 ppi density)
PPI
720
1080
Refresh Rate
60Hz
60Hz
HDR Support
✗
✗
Protection
Corning Gorilla Glass 4
Corning Gorilla Glass 3
Performance
Chipset
Exynos 7870 Octa (14 nm)
Qualcomm SDM660 Snapdragon 660 (14 nm)
CPU
Octa-core 1.6 GHz Cortex-A53
Octa-core (4x2.2 GHz Kryo 260 Gold & 4x1.8 GHz Kryo 260 Silver)
GPU
Mali-T830 MP1
Adreno 512
Memory
16GB 2GB RAM
128GB 6GB RAM
Expandable Storage
✗
✗
Card Slot
microSDXC (uses shared SIM slot) - dual SIM model only
microSDXC (uses shared SIM slot)
Camera
Main Camera
13 MP, f/1.9, 27mm (wide), AF
12 MP, f/1.8, 1/2.55", 1.4µm, dual pixel PDAF5 MP, f/2.4, (depth)
Main Camera Features
LED flash, panorama
LED flash, HDR, panorama
Front Camera
8 MP, f/1.9, 24mm (wide)
12 MP, f/2.0, (wide), 1/2.8", 1.28µm
Front Camera Features
N/A
N/A
Video Recording
1080p@30fps
1080p@30fps
Selfie Video
1080p@30fps
1080p@30fps
Optical Stabilization
✗
✗
Night Mode
✗
✗
Raw Photo Support
✗
✗
Battery
Capacity
2350 mAh
3200 mAh
Battery Details
Li-Ion 2350 mAh, non-removable
Li-Ion 3200 mAh, non-removable
Charging Details
N/A
18W wired
Fast Charging
✗
✗
Wireless Charging
✗
✗
Build & Safety
Dimensions
135.4 x 66.2 x 7.9 mm (5.33 x 2.61 x 0.31 in)
154.5 x 74.8 x 7.4 mm (6.08 x 2.94 x 0.29 in)
Weight
138 g
156.2 g
Materials
Glass front (Gorilla Glass 4), glass back (Gorilla Glass 4), aluminum frame
Glass front (Gorilla Glass 3), aluminum back, aluminum frame
Colors
Black Sky, Gold Sand, Blue Mist, Peach Cloud
Black, Ruby Red
Foldable
✗
✗
SAR
N/A
N/A
Connectivity
SIM
Nano-SIMNano-SIM + Nano-SIM
Nano-SIM + Nano-SIM
Network
GSM / HSPA / LTE
GSM / CDMA / HSPA / LTE
Network Speed
HSPA 42.2/5.76 Mbps, LTE (2CA) Cat6 300/50 Mbps
HSPA 42.2/5.76 Mbps, LTE (2CA) Cat6 300/50 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
4.2, A2DP, LE
5.0, A2DP, LE
NFC
✓
✗
USB
USB Type-C 2.0
microUSB 2.0, OTG
IR Blaster
✗
✗
Headphone Jack
✓
✓
Radio
✗
✗
Positioning
GPS, GLONASS
GPS, GLONASS
Audio
Stereo Speakers
✗
✗
Loudspeaker
Yes
Yes
Audio Jack
Yes
Yes
Software & Security
Operating System
Android 6.0.1 (Marshmallow), upgradable to Android 8.0 (Oreo)
Android 8.1 (Oreo), Funtouch 4
Fingerprint
✓
✓
Face Unlock
✗
✗
Sensors
Fingerprint (front-mounted), accelerometer, gyro, proximity, compass, barometer
Fingerprint (under display, optical), accelerometer, proximity, compass