Category Breakdown
Asus Zenfone 2 ZE551ML
vivo Y55s (2017)
Performance
54.354.3
Camera
42.442.4
Display
70.570.5
Battery
43.543.5
Build
79.879.8
Overall
55.555.5
Summary
- The Asus Zenfone 2 ZE551ML features a larger 5.5-inch IPS LCD display with a higher resolution of 1080 x 1920 pixels, compared to the 5.2-inch 720 x 1280 pixels display of the vivo Y55s (2017).
- In terms of performance, the Zenfone is powered by an Intel Atom Z3580 chipset with a quad-core CPU running at 2.3 GHz, while the Y55s uses a Qualcomm Snapdragon 425 with a 1.4 GHz quad-core CPU, resulting in superior processing capabilities for the Zenfone.
- Both phones have a 13 MP rear camera, but the Zenfone has a slightly wider aperture at f/2.0, potentially offering better low-light performance.
- The Zenfone also has a larger 3000 mAh battery compared to the Y55s's 2730 mAh, which may provide longer usage time.
- In terms of software, the Zenfone runs on Android 5.0 (upgradable to 6.0), while the Y55s comes with Android 6.0, offering a more updated software experience.
- Build quality favors the Y55s with its aluminum back and frame, making it lighter and slimmer than the Zenfone, which has a plastic back and frame.
Side-by-side Specification Comparison
Asus Zenfone 2 ZE551ML
vivo Y55s (2017)
General
Release Date
2015
2017
Announced
2015
2017
Description
N/A
N/A
Display
Size
5.5"
5.2"
Type
IPS LCD
IPS LCD
Resolution
1080 x 1920 pixels, 16:9 ratio (~401 ppi density)
720 x 1280 pixels, 16:9 ratio (~282 ppi density)
PPI
1080
720
Refresh Rate
60Hz
60Hz
Peak Brightness
N/A
N/A
HDR Support
✗
✗
Protection
Corning Gorilla Glass 3
N/A
Performance
Chipset
Intel Atom Z3580 (4 GB RAM model)Intel Atom Z3560 (2 GB RAM model)
Qualcomm MSM8917 Snapdragon 425 (28 nm)
CPU
Quad-core 2.3 GHz (4 GB RAM model)Quad-core 1.8 GHz (2 GB RAM model)
Quad-core 1.4 GHz Cortex-A53
GPU
PowerVR G6430
Adreno 306
Memory
16GB 2GB RAM, 32GB 2GB RAM, 32GB 4GB RAM, 64GB 4GB RAM, 128GB 4GB RAM
16GB 2GB RAM, 16GB 3GB RAM
Expandable Storage
✗
✗
Card Slot
microSDXC (dedicated slot)
microSDXC (dedicated slot)
Camera
Main Camera
13 MP
13 MP
Main Camera Details
13 MP, f/2.0, AF
13 MP, f/2.2, AF
Front Camera
5 MP
5 MP
Front Camera Details
5 MP, f/2.0
5 MP, f/2.2
Video Recording
1080p@30fps
1080p@30fps
Selfie Video
N/A
N/A
OIS
✗
✗
Night Mode
✗
✗
RAW Support
✗
✗
Battery
Capacity
3000 mAh
2730 mAh
Battery Details
Li-Po 3000 mAh, non-removable
Li-Ion 2730 mAh, non-removable
Charging Details
18W wired, 60% in 40 min
N/A
Fast Charging
✗
✗
Wireless Charging
✗
✗
Build & Design
Dimensions
152.5 x 77.2 x 10.9 mm (6.00 x 3.04 x 0.43 in)
147.9 x 72.9 x 7.5 mm (5.82 x 2.87 x 0.30 in)
Weight
170 g
142 g
Materials
Glass front (Gorilla Glass 3), plastic back, plastic frame
Glass front, aluminum back, aluminum frame
Water Resistance
N/A
N/A
Colors
Osmium Black, Sheer Gold, Glacier Gray, Glamor Red, Ceramic White
Crown Gold, Rose Gold, Space Gray
Foldable
✗
✗
Connectivity
SIM
Dual SIM (Micro-SIM, dual stand-by)
Nano-SIM + Micro-SIM
Network
GSM / HSPA / LTE
GSM / HSPA / LTE
Network Speed
HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps
HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps
5G
✗
✗
4G
✓
✓
WiFi
Wi-Fi 802.11 a/b/g/n/ac, Wi-Fi Direct, hotspot
Wi-Fi 802.11 b/g/n, Wi-Fi Direct
Bluetooth
4.0, A2DP, EDR
4.2, A2DP, LE
NFC
✓
✗
USB
microUSB 2.0, OTG
microUSB 2.0, OTG
IR Blaster
✗
✗
Headphone Jack
✓
✓
Radio
✗
✗
Positioning
GPS, GLONASS
GPS, GLONASS, BDS
Software
Operating System
Android 5.0 (Lollipop), upgradable to 6.0 (Marshmallow)
Android 6 (Marshmallow), Funtouch 3
OS Version
Android 5.0 (Lollipop), upgradable to 6.0 (Marshmallow)
Android 6 (Marshmallow), Funtouch 3
Security
Fingerprint
✗
✗
Face Unlock
✗
✗
Sensors
Accelerometer, gyro, proximity, compass
Accelerometer, proximity, compass
Audio
Stereo Speakers
✗
✗
Loudspeaker
Yes
Yes
Audio Jack
Yes
Yes

