Asus Zenfone 4 Selfie Zb553kl vs Oppo K13x

Key Specs

Battery
3000 mAh	-
Display
5.5 inches (13.97 cm)	-
Front Camera
13 MP	-
Processor
Qualcomm Snapdragon 430 MSM8937	-
RAM
3 GB	-
Rear Camera
13 MP	-

Audio

Audio Jack
-	3. 5 mm
Loudspeaker
-	Yes

Battery

Capacity
3000 mAh	6000 mAh
Quick Charging
-	Yes, 45W Fast charging
Removable
No	No
Type
Li-ion	Li-ion
USB Type-C
No	-

Camera

Flash
-	Yes, LED
Front Camera
-	8 MP
Rear Camera
-	50 MP + 2 MP
Video Recording
-	1080p @ 60 fps FHD, 720p @ 30 fps HD

Design

Colours
Deepsea Black, Sunlight Gold	Midnight Violet, Sunset Peach
Height
155.6 mm	-
Ruggedness
-	Dust Proof
Thickness
7.8 mm	-
Water Resistance
-	1.18 m upto 1.05 min
Weight
144 grams	194 gram
Width
76.2 mm	-

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Dimensions

Dimensions
-	76.2 x 165.7 x 7.9 mm
Height
-	165.7 mm
Thickness
-	7.9 mm
Width
-	76.2 mm

Display

Aspect Ratio
-	20:9
Brightness
-	850 nits
Display Type
IPS LCD	LCD Screen
Pixel Density
267 ppi	264 PPI
Refresh Rate
-	120 Hz
Resolution
720x1280 px (HD)	720 x 1604 pixels
Screen Size
5.5 inches (13.97 cm)	6.67 inches
Screen to Body Ratio (calculated)
70.17 %	-
Screen to Body Ratio (claimed by the brand)
-	84.9%
Touch Screen
Yes, Capacitive Touchscreen, Multi-touch	-

Front Camera

Resolution
13 MP f/2.0, Primary Camera	-

General

Brand
Asus	Oppo
Custom UI
Zen UI	ColorOS 15
Launch Date
September 21, 2017 (Official)	June 23, 2025
Model
-	K13x
Operating System
Android v7.0 (Nougat)	Android v15

Main Camera

Autofocus
Yes, Phase Detection autofocus	-
Camera Features
Digital Zoom Auto Flash Face detection Touch to focus	-
Camera Setup
Single	-
Flash
Yes, LED Flash	-
Image Resolution
4128 x 3096 Pixels	-
OIS
No	-
Resolution
13 MP f/2.2, Primary Camera	-
Settings
Exposure compensation, ISO control	-
Shooting Modes
Continuous Shooting High Dynamic Range mode (HDR)	-
Video Recording
1920x1080 @ 30 fps	-

Multimedia

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

Network & Connectivity

Bluetooth
Yes, v4.1	Yes, v5.4
GPS
Yes with A-GPS, Glonass	Yes, with BeiDou: B1I; GPS: L1; GLONASS: G1; Galileo: E1; QZSS: L1
NFC
No	-
Network Support
5G Not Supported in India, 4G Supported in India, 3G, 2G	4G.5G
SIM 1
4G Bands: TD-LTE 2300(band 40) FD-LTE 2100(band 1) / 1800(band 3) / 2600(band 7) / 900(band 8) / 850(band 5) / 800(band 20) 3G Bands: UMTS 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 Mbit/s ↓, HSUPA 5.76 Mbit/s ↑ GPRS: Available EDGE: Available	5G Bands: n1/n3/n5/n8/n28B/n40/n41/n77/n78
SIM 2
4G Bands: TD-LTE 2300(band 40) FD-LTE 2100(band 1) / 1800(band 3) / 2600(band 7) / 900(band 8) / 850(band 5) / 800(band 20) 3G Bands: UMTS 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 Mbit/s ↓ GPRS: Available EDGE: Available	5G Bands: n1/n3/n5/n8/n28B/n40/n41/n77/n78
SIM Size
SIM1: Nano, SIM2: Nano	Nano+Nano SIM
SIM Slot(s)
Dual SIM, GSM+GSM	Dual Sim, GSM+GSM (Hybrid Slot)
USB Connectivity
Mass storage device, USB charging, microUSB 2.0	-
VoLTE
Yes	Yes
Wi-Fi
Yes, Wi-Fi 4 (802.11 b/g/n)	Yes, with wifi-hotspot
Wi-Fi Features
Wi-Fi Direct, Mobile Hotspot	-

Performance

Architecture
64 bit	-
CPU
Octa core, 1.4 GHz, Cortex A53	-
Chipset
Qualcomm Snapdragon 430 MSM8937	-
Fabrication
28 nm	-
Graphics
Adreno 505	-
Processor
-	Mediatek Dimensity 6300
RAM
3 GB	4 GB /6 GB / 8GB
RAM Type
LPDDR3	LPDDR4X
RAM type
LPDDR3	-

Sensors

Fingerprint Sensor
Yes	Yes, Side
Fingerprint Sensor Customization
5	-
Fingerprint Sensor Position
Front	-
Other Sensors
Light sensor, Proximity sensor, Accelerometer, Compass, Gyroscope	Accelerometer, Gyro, Proximity, Compass

Storage

Expandable Memory
Yes, Up to 2 TB	up to 1TB
Internal Memory
32 GB	128 GB
Storage Type
eMMC 5.1	UFS 2.2
USB OTG
Yes	-