Samsung Galaxy A7 (2017)
#2981
vivo X21
#2825Category Breakdown
Samsung Galaxy A7 (2017)
vivo X21
Performance
62.574.4
Camera
19.119.1
Display
82.882.8
Battery
26.925.7
Build
93.376.2
Connectivity
63.959.3
Audio
8.98.9
Overall
44.745.9
Summary
- The Samsung Galaxy A7 (2017) features a glass front and back with an aluminum frame, weighing 186g, while the vivo X21 has a slightly lighter build at 156.2g with Gorilla Glass 3 and an aluminum back.
- The A7 sports a 5.7-inch Super AMOLED display with a resolution of 1080 x 1920 pixels, whereas the X21 offers a larger 6.28-inch Super AMOLED display with a higher resolution of 1080 x 2280 pixels.
- In terms of performance, the A7 is powered by an Exynos 7880 chipset with 3GB of RAM, while the X21 utilizes a Snapdragon 660 with 6GB of RAM, providing better multitasking capabilities.
- The A7's camera system includes a 16 MP rear camera and a 16 MP selfie camera, compared to the X21's dual rear setup of 12 MP and 5 MP, along with a 12 MP front camera.
- Battery capacity is 3600mAh for the A7 versus 3200mAh for the X21, both supporting 18W charging.
- Software-wise, the A7 runs on Android 6.0.1, upgradable to 8.0, while the X21 comes with Android 8.1 and Funtouch 4, offering a more recent software experience.
Side-by-side Specification Comparison
Samsung Galaxy A7 (2017)
vivo X21
General
Release Date
2017
2018
Announced
2017
2018
Description
Versions: A720F (Global Single-SIM); A720F/DS (Global Dual-SIM). Also known as Samsung Galaxy A7 (2017) Duos with dual-SIM card slots
N/A
Display
Size
5.7"
6.28"
Type
Super AMOLED
Super AMOLED
Resolution
1080 x 1920 pixels, 16:9 ratio (~386 ppi density)
1080 x 2280 pixels, 19:9 ratio (~402 ppi density)
PPI
1080
1080
Refresh Rate
60Hz
60Hz
HDR Support
✗
✗
Protection
Corning Gorilla Glass 4
Corning Gorilla Glass 3
Performance
Chipset
Exynos 7880 (14 nm)
Qualcomm SDM660 Snapdragon 660 (14 nm)
CPU
Octa-core 1.9 GHz Cortex-A53
Octa-core (4x2.2 GHz Kryo 260 Gold & 4x1.8 GHz Kryo 260 Silver)
GPU
Mali-T830MP3
Adreno 512
Memory
32GB 3GB RAM
64GB 6GB RAM, 128GB 6GB RAM
Expandable Storage
✗
✗
Card Slot
microSDXC (dedicated slot)
microSDXC (uses shared SIM slot)
Camera
Main Camera
16 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, HDR
LED flash, HDR, panorama
Front Camera
16 MP, f/1.9, 26mm (wide), 1/3.06", 1.0µm
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
3600 mAh
3200 mAh
Battery Details
Li-Ion 3600 mAh, non-removable
Li-Ion 3200 mAh, non-removable
Charging Details
18W wired
18W wired
Fast Charging
✗
✗
Wireless Charging
✗
✗
Build & Safety
Dimensions
156.8 x 77.6 x 7.9 mm (6.17 x 3.06 x 0.31 in)
154.5 x 74.8 x 7.4 mm (6.08 x 2.94 x 0.29 in)
Weight
186 g
156.2 g
Materials
Glass front (Gorilla Glass 4), glass back, aluminum frame
Glass front (Gorilla Glass 3), aluminum back, aluminum frame
Colors
Black Sky, Gold Sand, Blue Mist and Peach Cloud
Black, Aurora White, Ruby Red
Foldable
✗
✗
SAR
1.00 W/kg (head) 0.71 W/kg (body)
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, EDR, LE
5.0, A2DP, LE
NFC
✓
✗
USB
USB Type-C 2.0
microUSB 2.0, OTG
IR Blaster
✗
✗
Headphone Jack
✓
✓
Radio
✗
✗
Positioning
GPS, GLONASS, BDS
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 (rear-mounted), accelerometer, proximity, compass