ASUS ZenFone 4 (ZE554KL) vs. Vivo X51 5G

Phone Comparison, Reviews and Tests

Side by side comparison and review of ASUS ZenFone 4 (ZE554KL) and Vivo X51 5G. Compare sizes, cameras, batteries, memory capacities and other key specifications and features to simplify the choice of your perfect phone. Our goal is to make it easier for you to decide on the phone that will best meet your expectations by revealing the main differences between the products.

Phone Specifications Comparison

ASUS ZenFone 4 (ZE554KL) vs. Vivo X51 5G Comparison Chart
DESIGN AND DIMENSIONS ASUS ZenFone 4 (ZE554KL) Vivo X51 5G
Product Type Smartphone Smartphone
Manufacturer Model Number ZE554KL V2006
Form Factor Touch Touch
Height 155.36 mm 158.46 mm Vivo X51 5G has greater height than ASUS ZenFone 4 (ZE554KL).
Width 75.24 mm 72.8 mm ASUS ZenFone 4 (ZE554KL) has greater width than Vivo X51 5G.
Depth 7.7 mm 8.04 mm ASUS ZenFone 4 (ZE554KL) is narrower than ASUS ZenFone 4 (ZE554KL).
Weight 165 g 181.5 g ASUS ZenFone 4 (ZE554KL) is lighter than ASUS ZenFone 4 (ZE554KL).
Body Colour Midnight black | Moonlight white Alpha grey
Waterproof (Water-resistant) - -
IP rating - IP53
SAR Value 1.48 W/kg (body), 1.42 W/kg (head) 1.205 W/kg (head), 1.239 W/kg (body), 3.086 W/kg (limb)
Integrated Components FM radio -
Connector Type Headset jack - mini-phone 3.5mm
USB Type-C - 24 pin USB-C
USB Type-C - 24 pin USB-C
SIM Card Type (Size) Nano SIM Nano SIM
SIM Card Qty Dual-SIM Dual-SIM
SIM Card Configuration Details Nano SIM + nano SIM/microSD -
DISPLAY ASUS ZenFone 4 (ZE554KL) Vivo X51 5G
Display Type LCD display OLED display
Display Technology Super IPS+ AMOLED
Screen Size (Display Size) 5.5" 6.56" Vivo X51 5G has larger screen size than ASUS ZenFone 4 (ZE554KL).
Screen Resolution (Display Resolution) 1920 x 1080 pixels 2376 x 1080 pixels Vivo X51 5G has better screen resolution than ASUS ZenFone 4 (ZE554KL).
Display Format Full HD -
Pixel Density - 398 ppi
Aspect Ratio - 19.8:9
Max Brightness 600 cd/m² 500 cd/m² ASUS ZenFone 4 (ZE554KL) has better display brightness than Vivo X51 5G.
Colour Depth - 16.7 million colours
Display Enhancement Technology Bluelight Filter for Eye Care, Splendid technology -
Display Features 2.5D Glass -
Display Protection (Screen Protector) Corning Gorilla Glass (scratch resistant glass), smudge-resistant oleophobic coating -
PROCESSOR ASUS ZenFone 4 (ZE554KL) Vivo X51 5G
Processor Type (CPU) Qualcomm Snapdragon 630 Qualcomm Snapdragon 765G
Clock Speed 2.2 GHz 2.4 GHz Vivo X51 5G has higher clock speed than ASUS ZenFone 4 (ZE554KL).
Processor Core Qty 8-core 8-core Both phones have the same number of phone cores.
64-bit Architecture Yes - ASUS ZenFone 4 (ZE554KL) has 64-bit architecture.
Graphics System (GPU) Qualcomm ADRENO 508 -
MEMORY ASUS ZenFone 4 (ZE554KL) Vivo X51 5G
RAM LPDDR4X SDRAM - 4 GB 8 GB Vivo X51 5G has more RAM than ASUS ZenFone 4 (ZE554KL).
Internal Memory Size (Storage Capacity) 64 GB 256 GB Vivo X51 5G has more internal memory than ASUS ZenFone 4 (ZE554KL).
Supported Flash Memory Cards (Expandable Memory) microSDHC, microSDXC - up to 2 TB -
CAMERA ASUS ZenFone 4 (ZE554KL) Vivo X51 5G
MAIN CAMERA
Number of Main Cameras 2 4
Sensor Resolution 12 Megapixel 48 Megapixel Vivo X51 5G has better camera resolution than ASUS ZenFone 4 (ZE554KL).
Sensor Size 1/2.55" -
Sensor Name Sony Exmor RS IMX362 sensor -
Lens Aperture F/1.8 F/1.6 Vivo X51 5G has better lens aperture than ASUS ZenFone 4 (ZE554KL).
Lens Construction 6-element -
Optical Image Stabiliser (OIS) 4 Stop OIS (Optical Image Stabilisation) - ASUS ZenFone 4 (ZE554KL) has optical stabilisation.
Focus Adjustment Automatic Automatic
Laser Auto Focus - Yes
Special Effects HDR HDR
Camera Modes Panorama, Time-lapse mode, Pro mode, Beauty mode, Auto mode, super resolution mode, GIF animation function, portrait mode Panorama, Time-lapse mode, Pro mode, Live Photos, AI makeup, Portrait, Super Night mode, astro mode, pro sports mode, DOC mode
Light Source Dual LED flash LED flash
Video Resolutions 1920 x 1080 (1080p) at 30 fps, 1920 x 1080 (1080p) at 60 fps, 1280 x 720 (720p) at 30 fps, Slo-mo video 1920 x 1080 (1080p) at 120 fps, Slo-mo video 1280 x 720 (720p) at 240 fps, 3840 x 2160 (4K) at 30 fps -
Camera Features (Functions) 3-axis electronic image stabilisation, RAW image capture, Subject-Tracking Auto-Focus, PixelMaster 4.0 camera, 4-axis optical image stabilisation, 9 filters, Instant cameras switching, Dual Pixel Phase Detect Auto-Focus (PDAF) 60x Hyper Zoom, Gimbal Super Night Master, Gimbal Super Sport Expert
SECOND CAMERA
Sensor Resolution (2nd Camera) 8 Megapixel 13 Megapixel Vivo X51 5G has better second camera resolution than ASUS ZenFone 4 (ZE554KL).
Lens Type (2nd Camera) Wide-angle lens -
Lens Aperture (2nd Camera) - F/2.46
THIRD CAMERA
Sensor Resolution (3rd Camera) - 8 Megapixel
Lens Type (3rd Camera) - Wide-angle lens
Lens Aperture (3rd Camera) - F/2.2
FOURTH CAMERA
Sensor Resolution (4th Camera) - 8 Megapixel
Lens Type (4th Camera) - Telephoto lens
Lens Aperture (4th Camera) - F/3.4
FRONT CAMERA
Number of Front Cameras 1 1
Sensor Resolution (Front) 8 Megapixel 32 Megapixel Vivo X51 5G has better front camera resolution than ASUS ZenFone 4 (ZE554KL).
Lens Aperture (Front) F/2.0 F/2.45 ASUS ZenFone 4 (ZE554KL) has better front lens aperture than ASUS ZenFone 4 (ZE554KL).
Special Effects (Front) Collage HDR
Camera Modes (Front) Beauty mode, Auto mode, selfie panorama, GIF animation function, portrait mode, Smart beautification, Livestream beautification Live Photos, Portrait
Camera Features (Front) PixelMaster camera, ASUS SelfieMaster technology, 9 filters 2 x digital zoom
BATTERY AND CHARGING ASUS ZenFone 4 (ZE554KL) Vivo X51 5G
Battery Capacity (Battery Size) 3300 mAh 4315 mAh Vivo X51 5G has larger battery capacity than ASUS ZenFone 4 (ZE554KL).
Fast Charging Technology ASUS Boost Master - ASUS ZenFone 4 (ZE554KL) has fast charging technology.
Standby Time 552 hours -
Talk Time 1800 minutes -
Run Time Details Standby (4G): up to 552 hrs
Talk (3G): up to 1800 min
Playback (video): up to 16 hrs
Continuous browsing (Wi-Fi): up to 18 hrs
-
Battery Technology Lithium polymer -
CELLULAR ASUS ZenFone 4 (ZE554KL) Vivo X51 5G
Technology WCDMA (UMTS) / GSM CDMA2000 1X / GSM / WCDMA (UMTS)
Mobile Broadband Generation 4G 5G Vivo X51 5G has more advanced generation mobile network.
Operating System Android 7.0 Nougat Funtouch OS 10 (based on Android 10)
User Interface ASUS ZenUI 4.0 -
Navigation GPS, A-GPS, GLONASS, BeiDou, Galileo GPS, GLONASS, BeiDou, Galileo
COMMUNICATIONS ASUS ZenFone 4 (ZE554KL) Vivo X51 5G
Data Transmission GPRS, EDGE, HSDPA, HSUPA, HSPA+, FDD-LTE, TDD-LTE, DC-HSPA+ FDD-LTE, TDD-LTE, 5G NR FR1
2G Band 850 GSM, 900 GSM, 1800 GSM, 1900 GSM 850 GSM, 900 GSM, 1800 GSM, 1900 GSM, 800 CDMA2000 1X
3G UMTS Band Band 1, Band 2, Band 3, Band 5, Band 6, Band 8, Band 19 Band 1, Band 2, Band 4, Band 5, Band 8
3G UMTS Frequency 2100, 1900, 1800, 850, 800, 900, 800 2100, 1900, 1700, 850, 900
4G LTE Band Band 1, Band 2, Band 3, Band 5, Band 7, Band 8, Band 18, Band 19, Band 20, Band 26, Band 28, Band 32, Band 38, Band 39, Band 40, Band 41 Band 1, Band 2, Band 3, Band 4, Band 5, Band 7, Band 8, Band 12, Band 17, Band 18, Band 19, Band 20, Band 26, Band 28, Band 32, Band 38, Band 39, Band 40, Band 41, Band 66
4G LTE Frequency FDD 2100, FDD 1900 PCS, FDD 1800+, FDD 850, FDD 2600, FDD 900, FDD 800 lower, FDD 800 upper, FDD 800 DD, FDD 850+, FDD 700 APT, FDD 1500 L, TDD 2600, TDD 1900, TDD 2300, TDD 2500 FDD 2100, FDD 1900 PCS, FDD 1800+, FDD 1700 - 2110 AWS, FDD 850, FDD 2600, FDD 900, FDD 700a, FDD 700b, FDD 800 lower, FDD 800 upper, FDD 800 DD, FDD 850+, FDD 700 APT, FDD 1500 L, TDD 2600, TDD 1900, TDD 2300, TDD 2500, FDD 1700 - 2110 AWS-3
5G NR Band - N1, n3, n7, n8, n28, n38, n41, n77, n78
5G NR Frequency - FDD 2100, FDD 1800, FDD 2600, FDD 900, FDD 700APT, TDD TD 2600, TDD TD 2500, TDD TD 3700, TDD TD 3500
Wireless Interface IEEE 802.11a/b/g/n/ac Wi-Fi
Bluetooth Bluetooth 5.0 Bluetooth 5.1
NFC Yes Yes Both phones have an NFC reader for mobile payments.
Messaging Services SMS, MMS -
MEDIA ASUS ZenFone 4 (ZE554KL) Vivo X51 5G
Supported Digital Audio Standards - WAV, MPEG 2 Audio, MP3, FLAC, MIDI, APE (Monkey's Audio), AMR-WB, AMR-NB, Vorbis
Supported Digital Video Standards - MKV, AVI, 3GP, TS, MP4
Sound Enhancements DTS-HD Premium Sound, Hi-Res audio, DTS Headphone:X -
Audio Amplifier - AK4377A
FEATURES ASUS ZenFone 4 (ZE554KL) Vivo X51 5G
Phone Functions Speakerphone, voice control, call timer, conference call, flight mode, voice dialing, vibrating alert Speakerphone, voice control, call timer, conference call, flight mode, voice dialing, vibrating alert
Sensors Accelerometer, ambient light sensor, proximity sensor, digital compass, gyro sensor, hall sensor, colour correction sensor Accelerometer, ambient light sensor, proximity sensor, digital compass
Security Devices - Fingerprint reader
Additional Phone Features Wi-Fi Miracast, Dual noise reduction microphones, Google Drive Storage (100 GB) (free for 2 years), NXP Smart AMP technology, ASUS Noise Reduction technology, Nano Molding Technology (NMT) -
OTHERS ASUS ZenFone 4 (ZE554KL) Vivo X51 5G
Included Accessories Power adapter, SIM card removal tool, ASUS ZenEar with Mic, USB-C cable Headset, USB cable, power adapter, SIM card removal tool, USB-C to 3.5 jack adapter, protective case, protective film
Compliant Standards - IP53
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