Category Breakdown
Samsung Galaxy A3 (2017)
vivo X21
Performance
60.362.5
Camera
42.442.4
Display
79.579.5
Battery
43.543.5
Build
79.879.8
Overall
59.159.7
Summary
- The Samsung Galaxy A3 (2017) features a compact build with Gorilla Glass 4 on both the front and back, while the vivo X21 has a larger design with Gorilla Glass 3 and an aluminum back.
- In terms of display, the A3 offers a 4.7-inch Super AMOLED screen at 720 x 1280 resolution, whereas the X21 boasts a 6.28-inch Super AMOLED display with a higher 1080 x 2280 resolution.
- Performance-wise, the A3 is powered by the Exynos 7870 with 2GB RAM, while the X21 utilizes the Snapdragon 660 with 6GB RAM, providing a more robust experience.
- The A3's rear camera is 13 MP compared to the X21's dual-camera setup of 12 MP and 5 MP, although both can record 1080p video.
- Battery capacity is also notable, with the A3 at 2350 mAh and the X21 at 3200 mAh, the latter supporting 18W fast charging.
- Finally, the A3 runs on Android 6.0.1, upgradable to 8.0, while the X21 comes with Android 8.1 and Funtouch 4, offering a more updated software experience.
Side-by-side Specification Comparison
Samsung Galaxy A3 (2017)
vivo X21
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
Peak Brightness
N/A
N/A
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
64GB 6GB 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
12 MP
Main Camera Details
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)
Front Camera
8 MP
12 MP
Front Camera Details
8 MP, f/1.9, 24mm (wide)
12 MP, f/2.0, (wide), 1/2.8", 1.28µm
Video Recording
1080p@30fps
1080p@30fps
Selfie Video
1080p@30fps
1080p@30fps
OIS
✗
✗
Night Mode
✗
✗
RAW 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 & Design
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
Water Resistance
N/A
N/A
Colors
Black Sky, Gold Sand, Blue Mist, Peach Cloud
Black, Aurora White, Ruby Red
Foldable
✗
✗
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
Software
Operating System
Android 6.0.1 (Marshmallow), upgradable to Android 8.0 (Oreo)
Android 8.1 (Oreo), Funtouch 4
OS Version
Android 6.0.1 (Marshmallow), upgradable to Android 8.0 (Oreo)
Android 8.1 (Oreo), Funtouch 4
Security
Fingerprint
✓
✓
Face Unlock
✗
✗
Sensors
Fingerprint (front-mounted), accelerometer, gyro, proximity, compass, barometer
Fingerprint (rear-mounted), accelerometer, proximity, compass
Audio
Stereo Speakers
✗
✗
Loudspeaker
Yes
Yes
Audio Jack
Yes
Yes

