Asus Zenfone 2 Ze551ml 4gb Ram 16gb 1 8ghz vs Vivo Y21 5g

Key Specs

Battery
3000 mAh	-
Display
5.5 inches (13.97 cm)	-
Front Camera
5 MP	-
Processor
Intel Atom Z3560	-
RAM
4 GB	-
Rear Camera
13 MP	-

Audio

Audio Features
-	Stereo speakers
Audio Jack
-	3.5mm
Loudspeaker
-	Yes
Stereo Speakers
-	Dual Stereo Speakers

Battery

Capacity
3000 mAh	6500mAh
Quick Charging
Yes, Fast	44W FlashCharge
Removable
No	No
Type
Li-Polymer	Li-ion battery
USB Type-C
No	Yes

Camera

Autofocus
-	Yes
Flash
-	Yes
Front Camera
-	5MP
Image Resolution
-	1600 × 720 pixel
Rear Camera
-	50MP + 0.08MP
Video Recording
-	1080p at 30 fps

Design

Build Material
-	Glass front, plastic frame, and composite plastic back
Colours
Silver	Champagne Gold, Midnight Blue
Form Factor
-	Candybar form factor
Height
152.5 mm	-
Thickness
10.9 mm Below	-
Water Resistance
-	IP65
Weight
170 grams	209 gram
Width
77.2 mm	-

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Dimensions

Dimensions
-	16.74 × 7.71 × 0.839 cm
Height
-	16.74 cm
Thickness
-	0.839 cm
Width
-	7.71 cm

Display

Aspect Ratio
-	20:9
Bezel-less display
-	Punch-hole LCD
Brightness
-	1200 nits
Display Type
IPS LCD	HD+ IPS LCD
Pixel Density
401 ppi	260 ppi
Refresh Rate
-	120Hz
Resolution
1080x1920 px (FULL HD)	1600 × 720 pixel
Screen Protection
Corning Gorilla Glass v3, Oleophobic coating	-
Screen Size
5.5 inches (13.97 cm)	6.74 inch
Screen to Body Ratio (calculated)
70.67 %	-
Screen to Body Ratio (claimed by the brand)
-	90.6%
Touch Screen
Yes, Capacitive Touchscreen, Multi-touch	-

Front Camera

Camera Features
Fixed Focus	-
Flash
No	-
Resolution
5 MP f/2.0, Primary Camera	-

General

Brand
Asus	Vivo
Custom UI
Zen UI	OriginOS 6
Launch Date
October 1, 2015 (Official)	March 25, 2026
Model
-	Y21
Operating System
Android v5.0 (Lollipop)	Android 16

Main Camera

Autofocus
Yes	-
Camera Features
Digital Zoom Auto Flash Digital image stabilization Face detection Touch to focus	-
Camera Setup
Single	-
Flash
Yes, Dual-color LED Flash	-
Image Resolution
4128 x 3096 Pixels	-
Resolution
13 MP f/2.0, Primary Camera	-
Sensor
CMOS image sensor	-
Settings
Exposure compensation, ISO control	-
Shooting Modes
Continuous Shooting High Dynamic Range mode (HDR) Burst mode	-
Video Recording
1920x1080 @ 30 fps	-

Multimedia

Audio Jack
3.5 mm	-
FM Radio
Yes, RDS	-
Loudspeaker
Yes	-

Network & Connectivity

Bluetooth
Yes, v4.0	v5.4
GPS
Yes with A-GPS, Glonass	Yes
NFC
Yes	Yes
Network Support
5G Not Supported in India, 4G Supported in India, 3G, 2G	5G
SIM 1
4G Bands: TD-LTE 2600(band 38) / 2300(band 40) / 2500(band 41) / 1900(band 39) FD-LTE 2100(band 1) / 1800(band 3) 3G Bands: UMTS 1900 / 2100 / 850 / 900 MHz 2G Bands: GSM 1800 / 1900 / 850 / 900 MHz 4G Speed: 50 Mbit/s ↑ 150 Mbit/s ↓ (LTE category 4) 3G Speed: HSDPA 42.2 Mbit/s ↓, HSUPA 5.76 Mbit/s ↑ GPRS: Available EDGE: Available	-
SIM 2
2G Bands: GSM 1800 / 1900 / 850 / 900 MHz	-
SIM Size
SIM1: Micro, SIM2: Micro	Nano Sim
SIM Slot(s)
Dual SIM, GSM+GSM	Dual Nano Sim
USB Connectivity
microUSB 2.0	-
VoLTE
-	Yes
Wi-Fi
Yes, Wi-Fi 5 (802.11 a/b/g/n/ac)	Wi-Fi 5 / 802.11a/b/g/n/ac
Wi-Fi Calling
-	Yes
Wi-Fi Features
Wi-Fi Direct, Mobile Hotspot	-

Performance

Architecture
64 bit	-
CPU
Quad core, 1.8 GHz	-
Chipset
Intel Atom Z3560	-
Graphics
PowerVR G6430	ARM Mali-G57 MC2
Processor
-	MediaTek Dimensity 6300
Processor Fabrication
-	6nm
RAM
4 GB	4GB/6GB/8GB
RAM Type
LPDDR3	LPDDR4X
RAM type
LPDDR3	-

Sensors

Fingerprint Sensor
No	Side-mounted
Other Sensors
Light sensor, Proximity sensor, Accelerometer, Compass, Gyroscope	Accelerometer, Ambient Light Sensor, Proximity Sensor, E-Compass, Magnetometer

Storage

Expandable Memory
Yes, Up to 128 GB	Upto 2TB via microSD
Internal Memory
16 GB	128GB
Storage Type
-	UFS 2.2
USB OTG
Yes	-