ASUS ZenFone 2 Deluxe (ZE551ML) vs. OnePlus 9

Phone Comparison, Reviews and Tests

In depth comparison and review of ASUS ZenFone 2 Deluxe (ZE551ML) and OnePlus 9. Compare sizes, cameras, batteries, memory, and other important specifications and features to easily choose the right phone for you. Our goal is to help you uncover differences between the products and find the phone that will best fit your needs.

Phone Specifications Comparison

ASUS ZenFone 2 Deluxe (ZE551ML) vs. OnePlus 9 Comparison Chart
DESIGN AND DIMENSIONS ASUS ZenFone 2 Deluxe (ZE551ML) OnePlus 9
Product Type Smartphone Smartphone
Manufacturer Model Number ZE551ML -
Form Factor Touch Touch
Height 152.5 mm 160 mm OnePlus 9 has greater height than ASUS ZenFone 2 Deluxe (ZE551ML).
Width 77.2 mm 74.2 mm ASUS ZenFone 2 Deluxe (ZE551ML) has greater width than OnePlus 9.
Depth 10.9 mm 8.7 mm OnePlus 9 is narrower than ASUS ZenFone 2 Deluxe (ZE551ML).
Weight 170 g 192 g ASUS ZenFone 2 Deluxe (ZE551ML) is lighter than ASUS ZenFone 2 Deluxe (ZE551ML).
Body Colour Purple | White Astral black | Arctic sky
Waterproof (Water-resistant) - -
SAR Value 0.332 W/kg (body), 0.351 W/kg (head) -
Connector Type Headset jack - mini-phone 3.5mm
Micro-USB - 5 pin Micro-USB Type B
USB Type-C - 24 pin USB-C
SIM Card Type (Size) Micro SIM Nano SIM
SIM Card Qty Dual-SIM Dual-SIM
DISPLAY ASUS ZenFone 2 Deluxe (ZE551ML) OnePlus 9
Display Type LCD display OLED display
Display Technology IPS Fluid Amoled
Screen Size (Display Size) 5.5" 6.55" OnePlus 9 has larger screen size than ASUS ZenFone 2 Deluxe (ZE551ML).
Screen Resolution (Display Resolution) 1920 x 1080 pixels 2400 x 1080 pixels OnePlus 9 has better screen resolution than ASUS ZenFone 2 Deluxe (ZE551ML).
Display Format Full HD Full HD+
Pixel Density 403 ppi 402 ppi ASUS ZenFone 2 Deluxe (ZE551ML) has better pixel density than OnePlus 9.
Aspect Ratio - 20:9
Max Brightness - 1100 cd/m²
Colour Depth - 16.7 million colours
HDR - Yes OnePlus 9 has HDR.
HDR Technology - HDR10+
Display Enhancement Technology Native Damage Resistance technology Vibrant Color Effect
Display Refresh Rate - 120 Hz
Display Features ASUS Glove Touch technology Always-on display, Reading mode, night mode, Wide colour display (P3), sRGB support
Display Protection (Screen Protector) Fingerprint-resistant oleophobic coating, Corning Gorilla Glass 3 (scratch resistant glass) Corning Gorilla Glass (scratch resistant glass)
PROCESSOR ASUS ZenFone 2 Deluxe (ZE551ML) OnePlus 9
Processor Type (CPU) Intel Qualcomm Snapdragon 888
Processor Core Qty Quad-core 8-core OnePlus 9 has higher processor core quantity than ASUS ZenFone 2 Deluxe (ZE551ML).
Graphics System (GPU) PowerVR G6430 Qualcomm ADRENO 660
MEMORY ASUS ZenFone 2 Deluxe (ZE551ML) OnePlus 9
RAM 4 GB LPDDR5 SDRAM - 8 GB OnePlus 9 has more RAM than ASUS ZenFone 2 Deluxe (ZE551ML).
Internal Memory Size (Storage Capacity) 64 GB 128 GB OnePlus 9 has more internal memory than ASUS ZenFone 2 Deluxe (ZE551ML).
Memory Interface - UFS 3.1
Supported Flash Memory Cards (Expandable Memory) microSDHC, microSDXC - up to 128 GB -
CAMERA ASUS ZenFone 2 Deluxe (ZE551ML) OnePlus 9
MAIN CAMERA
Number of Main Cameras 1 3
Sensor Resolution 13 Megapixel 48 Megapixel OnePlus 9 has better camera resolution than ASUS ZenFone 2 Deluxe (ZE551ML).
Sensor Size - 1/1.43"
Sensor Name - Sony Exmor RS IMX689 sensor
Lens Aperture F/2.0 F/1.8 OnePlus 9 has better lens aperture than ASUS ZenFone 2 Deluxe (ZE551ML).
Lens Construction 5-element 7-element
Pixel Size - 1.12 μm
Focus Adjustment Automatic Automatic
Laser Auto Focus - Yes
Minimum Focal Length (Focal Distance) - 23 mm
Special Effects - HDR
HDR Mode Super HDR -
Camera Modes Night mode, manual mode, Beauty mode, Auto mode, super resolution mode Panorama, Time-lapse mode, Pro mode, HYPERLAPSE, Nightscape capture mode, Portrait, Filter mode, Super Macro, Portrait video, UltraShot HDR, Smart Scene Recognition, Tilt-shift mode, Focus Peaking, Cat/Dog Face Focus, Super Stable, Video Nightscape
Light Source Dual LED flash Dual LED flash
Video Resolutions - 1920 x 1080 (1080p) at 30 fps, 1920 x 1080 (1080p) at 60 fps, 3840 x 2160 (4K) at 30 fps, 3840 x 2160 (4K) at 60 fps, Super slow motion video 1920 x 1080 (1080p) at 240 fps, Super slow motion video 1280 x 720 (720p) at 480 fps, 7680 x 4320 (8K) at 30fps
Camera Features (Functions) Zero Shutter Lag, Blue Glass Infrared Filter Tracking Focus, Phase Detect Auto-Focus (PDAF), Continuous Auto Focus (CAF), RAW image capture, Dual Native ISO, 2x2 On-Chip Lens (OCL), Hasselblad Camera, Natural Color Calibration, 12-bit RAW
SECOND CAMERA
Sensor Resolution (2nd Camera) - 50 Megapixel
Sensor Size (2nd Camera) - 1/1.56"
Sensor Name (2nd Camera) - Sony Exmor RS IMX766 sensor
Lens Type (2nd Camera) - Ultra wide-angle lens
Lens Aperture (2nd Camera) - F/2.2
Lens Element Qty (2nd Camera) - 7-element
Field of View (2nd Camera) - 119 degree(s)
Minimum Focal Length (2nd Camera) - 14 mm
Camera Features (2nd Camera) - 2x2 On-Chip Lens (OCL), Freeform Lens
THIRD CAMERA
Sensor Resolution (3rd Camera) - 2 Megapixel
Lens Aperture (3rd Camera) - F/2.4
Lens Element Qty (3rd Camera) - 3-element
Camera Functions (3rd Camera) - Monochrome
FRONT CAMERA
Number of Front Cameras 1 1
Sensor Resolution (Front) 5 Megapixel 16 Megapixel OnePlus 9 has better front camera resolution than ASUS ZenFone 2 Deluxe (ZE551ML).
Sensor Name (Front) - Sony Exmor RX IMX471 sensor
Lens Type (Front) Wide-angle lens -
Lens Aperture (Front) F/2.0 F/2.4 ASUS ZenFone 2 Deluxe (ZE551ML) has better front lens aperture than ASUS ZenFone 2 Deluxe (ZE551ML).
Pixel Size (Front) - 1 μm
Focus Adjustment Focus free Focus free
Special Effects (Front) - HDR, face retouch
Camera Modes (Front) Selfie panorama Time-lapse mode
Light Source (Front) - Display flash
Video Resolutions (Front) - 1920 x 1080 (1080p) at 30 fps
Camera Features (Front) - Electronic Image Stabiliser (EIS)
BATTERY AND CHARGING ASUS ZenFone 2 Deluxe (ZE551ML) OnePlus 9
Battery Capacity (Battery Size) 3000 mAh 4500 mAh OnePlus 9 has larger battery capacity than ASUS ZenFone 2 Deluxe (ZE551ML).
Fast Charging Technology - Qualcomm Quick Charge, Warp Charge 65T technology OnePlus 9 has fast charging technology.
Recharge Time (Charging Time) - 29 min
Wireless Charging - Yes OnePlus 9 can be charged wirelessly.
Wireless Charging Standards - Qi
Battery Technology Lithium polymer -
CELLULAR ASUS ZenFone 2 Deluxe (ZE551ML) OnePlus 9
Technology WCDMA (UMTS) / GSM WCDMA (UMTS) / GSM
Mobile Broadband Generation 4G 5G OnePlus 9 has more advanced generation mobile network.
Operating System Android 5.0 (Lollipop) OxygenOS (based on Android 11)
User Interface ASUS ZenUI -
Navigation GPS, A-GPS, GLONASS, BeiDou GPS, A-GPS, GLONASS, BeiDou, Galileo
COMMUNICATIONS ASUS ZenFone 2 Deluxe (ZE551ML) OnePlus 9
Data Transmission GPRS, EDGE, HSDPA, HSUPA, HSPA+, 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
3G UMTS Band - Band 1, Band 2, Band 4, Band 5, Band 8, Band 9, Band 19
3G UMTS Frequency - 2100, 1900, 1700, 850, 900, 1700, 800
4G LTE Band - Band 1, Band 2, Band 3, Band 4, Band 5, Band 7, Band 8, Band 12, Band 13, Band 17, Band 18, Band 19, Band 20, Band 25, 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 1700 - 2110 AWS, FDD 850, FDD 2600, FDD 900, FDD 700a, FDD 700c, FDD 700b, FDD 800 lower, FDD 800 upper, FDD 800 DD, FDD 1900+, 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, n5, n7, n8, n20, n28, n38, n41, n66, n78, n40
5G NR Frequency - FDD 2100, FDD 1800, FDD 850, FDD 2600, FDD 900, FDD 800, FDD 700APT, TDD TD 2600, TDD TD 2500, FDD AWS-3, TDD TD 3500, TDD 2300
Wireless Interface IEEE 802.11a/b/g/n/ac IEEE 802.11a/b/g/n/ac/ax
Bluetooth Bluetooth 4.0 Bluetooth 5.2
NFC - Yes OnePlus 9 has NFC reader for mobile payments.
Modem - Snapdragon X55 5G
Messaging Services SMS, MMS -
MEDIA ASUS ZenFone 2 Deluxe (ZE551ML) OnePlus 9
Supported Digital Audio Standards - WAV, WMA, AAC, MP3, FLAC, AC-3, AAC +, OGG, APE (Monkey's Audio), M4A, LDAC, IMY, EAC3, MID, AMR-WB, AMR-NB, EAC3-JOC, AC-4
Supported Digital Video Standards - MKV, FLV, AVI, MOV, WMV, 3GP, TS, WebM, H.265 HEVC, MP4
Sound Enhancements - Qualcomm aptX audio, Qualcomm aptX HD audio, Dolby Atmos Surround Sound
FEATURES ASUS ZenFone 2 Deluxe (ZE551ML) OnePlus 9
Phone Functions Speakerphone, call timer, conference call, flight mode, vibrating alert Speakerphone, voice control, call timer, conference call, flight mode, voice dialing, vibrating alert
Sensors Ambient light sensor, proximity sensor, digital compass, gyro sensor, G-sensor Accelerometer, ambient light sensor, proximity sensor, digital compass, gyro sensor, flicker sensor, sensor core
Security Devices - Fingerprint reader (under display), face recognition
Additional Phone Features Kids Mode, ASUS TruVivid technology, Power Saving Mode, AudioWizard, ASUS BoostMaster technology, ASUS WebStorage (5GB) Noise Cancellation Technology, MIMO technology, Gesture Controls, OnePlus Switch, Alert Slider, dual stereo speakers, Zen mode 2.0, OnePlus Games
OTHERS ASUS ZenFone 2 Deluxe (ZE551ML) OnePlus 9
Included Accessories Power adapter SIM card removal tool, sticker, screen protector, USB-C to USB-C cable, protective case, Warp Charge 65 power adapter
Compliant Standards - SGS
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