Category Breakdown
Oppo A77 (2017)
vivo Z3x
Performance
68.874.3
Camera
19.119.1
Display
58.958.9
Battery
25.725.9
Build
77.867.9
Connectivity
50.558.3
Audio
8.98.9
Overall
39.041.6
Summary
- The Oppo A77 (2017) features a 5.5-inch IPS LCD display with a resolution of 1080 x 1920 pixels, while the vivo Z3x has a larger 6.26-inch IPS LCD with a higher resolution of 1080 x 2280 pixels.
- In terms of performance, the A77 is powered by the Snapdragon 625 chipset, whereas the Z3x utilizes the more advanced Snapdragon 660, providing better processing capabilities.
- Both phones have a 13 MP rear camera and a 16 MP front camera, but the Z3x includes an additional 2 MP depth sensor for enhanced photography.
- The A77 has a 3200 mAh battery, slightly larger than the Z3x's 3260 mAh, but both lack fast charging.
- For software, the A77 runs on Android 7.1 with ColorOS 3.1, while the Z3x operates on Android 9.0 with Funtouch 9, offering a more updated user experience.
- Build quality differs as well, with the A77 featuring a glass front and aluminum back, compared to the Z3x's glass front and plastic back.
Side-by-side Specification Comparison
Oppo A77 (2017)
vivo Z3x
General
Release Date
2017
2019
Announced
2017
2019
Description
N/A
N/A
Display
Size
5.5"
6.26"
Type
IPS LCD
IPS LCD
Resolution
1080 x 1920 pixels, 16:9 ratio (~401 ppi density)
1080 x 2280 pixels, 19:9 ratio (~403 ppi density)
PPI
1080
1080
Refresh Rate
60Hz
60Hz
HDR Support
✗
✗
Protection
N/A
N/A
Performance
Chipset
Qualcomm MSM8953 Snapdragon 625 (14 nm)
Qualcomm SDM660 Snapdragon 660 (14 nm)
CPU
Octa-core 2.0 GHz Cortex-A53
Octa-core (4x2.2 GHz Kryo 260 Gold & 4x1.8 GHz Kryo 260 Silver)
GPU
Adreno 506
Adreno 512
Memory
64GB 4GB RAM
64GB 4GB RAM, 64GB 6GB RAM
Expandable Storage
✗
✗
Card Slot
microSDXC (uses shared SIM slot)
microSDXC (dedicated slot)
Camera
Main Camera
13 MP, f/2.2, PDAF
13 MP, f/2.2, PDAF2 MP, f/2.4, (depth)
Main Camera Features
LED flash, HDR, panorama
LED flash, panorama
Front Camera
16 MP, f/2.0, 26mm (wide), 1/3.06", 1.0µm
16 MP, f/2.0, 26mm (wide), 1/3.06", 1.0µm
Front Camera Features
N/A
N/A
Video Recording
1080p@30fps
1080p@30fps
Selfie Video
1080p@30fps
N/A
Optical Stabilization
✗
✗
Night Mode
✗
✗
Raw Photo Support
✗
✗
Battery
Capacity
3200 mAh
3260 mAh
Battery Details
Li-Ion 3200 mAh, non-removable
Li-Ion 3260 mAh, non-removable
Charging Details
N/A
N/A
Fast Charging
✗
✗
Wireless Charging
✗
✗
Build & Safety
Dimensions
153.3 x 75.9 x 7.4 mm (6.04 x 2.99 x 0.29 in)
154.8 x 75 x 7.9 mm (6.09 x 2.95 x 0.31 in)
Weight
148 g
150 g
Materials
Glass front, aluminum back, aluminum frame
Glass front, plastic back, plastic frame
Colors
Gold, Rose Gold, Black
Black, Red, Aurora
Foldable
✗
✗
SAR
N/A
N/A
Connectivity
SIM
Nano-SIM + Nano-SIM
Nano-SIM + Nano-SIM
Network
GSM / CDMA / HSPA / LTE
GSM / CDMA / HSPA / LTE
Network Speed
HSPA, LTE
HSPA 42.2/5.76 Mbps, LTE (2CA) Cat6 300/50 Mbps
5G
✗
✗
4G
✓
✓
WiFi
Wi-Fi 802.11 a/b/g/n, Wi-Fi Direct
Wi-Fi 802.11 a/b/g/n, Wi-Fi Direct
Bluetooth
4.2, A2DP
5.0, A2DP, LE
NFC
✗
✗
USB
microUSB 2.0, OTG
microUSB 2.0, OTG
IR Blaster
✗
✗
Headphone Jack
✓
✓
Radio
✗
✗
Positioning
GPS
GPS, GLONASS, BDS
Audio
Stereo Speakers
✗
✗
Loudspeaker
Yes
Yes
Audio Jack
Yes
Yes
Software & Security
Operating System
Android 7.1 (Nougat), ColorOS 3.1
Android 9.0 (Pie), Funtouch 9
Fingerprint
✓
✓
Face Unlock
✗
✗
Sensors
Fingerprint (front-mounted), accelerometer, proximity, compass
Fingerprint (rear-mounted), accelerometer, proximity, compass

