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Asus Zenfone Selfie (ZD551KL 16GB) vs Asus Zenfone 4 Selfie Pro (ZD552KL 64GB/4GB)

Side by side comparison between Asus Zenfone Selfie vs Asus Zenfone 4 Selfie Pro phones, differences, pros, cons with full specifications. What's the better?

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Compare Asus Zenfone 4 Selfie Pro XAsus Zenfone Selfie (ZD551KL 16GB)04Points
Asus Zenfone Selfie (ZD551KL 16GB)
5.5"
IPS

1080x1920

13
MP

13mp

2GB
RAM

64bit Octa

3000
mAh

(Removable)

vs
17PointsAsus Zenfone 4 Selfie Pro (ZD552KL 64GB/4GB)Compare Asus Zenfone Selfie X
Asus Zenfone 4 Selfie Pro (ZD552KL 64GB/4GB)
5.5"
AMOLED

1080x1920

16
MP

12mp

4GB
RAM

64bit Octa

3000
mAh

(Non removable)

What's the better phone? Asus Zenfone 4 Selfie Pro (ZD552KL 64GB/4GB)

The phonemore's choice is much more technical than personal. Therefore, you shouldn't only consider this. Our goal is to help you, but what's important to us may not be important to you. You decide which one is the best! Comment!

Zenfone Selfie (ZD551KL 16GB)4 Advantages Asus Zenfone Selfie (ZD551KL 16GB)vsZenfone 4 Selfie Pro (ZD552KL 64GB/4GB)17 Advantages Asus Zenfone 4 Selfie Pro (ZD552KL 64GB/4GB)
+BSI sensorAdvantage
The BSI sensor allows the entry of more light generating photos with more detail and brightness
vsNot supported
+LiPo: Li-Ion polymer (Removable)Advantage
Removable battery can be replaced easily
vsLiPo: Li-Ion polymer (Non removable)
+2 slots (Dual-SIM)
(dedicated slot)Advantage
More SIM card slots. You can choose more carriers.
vs2 slots (Dual-SIM)
(hybrid slot/shares the same microSD slot)
+802.11 b/g/n/ac (2.4Ghz, 5Ghz)Advantage
WiFi 802.11 b/g/n/ac (2.4Ghz, 5Ghz) is newer and faster
vs802.11 b/g/n (2.4Ghz)
1.7Ghz 64bit Octa-Corevs+2Ghz 64bit Octa-Core63%
More powerful processor, you can open your applications faster
2GB LPDDR3vs+4GB LPDDR3100%
More RAM memory. Typically more responsive and better for multitasking.
16GB (12GB available)vs+64GB (54GB available)4 times
More internal storage for applications and files
Until 64GB microSD, microSDXCvs+Until 256GB microSD, microSDXC3 times
More external storage for files using memory cards
170 grams (5.95 ounces)vs+147 grams (5.15 ounces)16%
Lighter
10.8 millimeters (0.43 inches)vs+6.85 millimeters (0.27 inches)58%
Thinner
TFT IPS LCDvs+AMOLEDAdvantage
AMOLED display is brighter and more vivid
(back) 13MPvs+(back) 16MP25%
Higher resolution main camera
Dual-LED flashvs+Dual-LED on main camera and LED on front cameraAdvantage
The Dual-LED on main camera and LED on front camera helps in dark places or in low light
HDR photo only main cameravs+HDR photo on both camerasAdvantage
The HDR technology produced photos with more detail in dark areas
(front) 13MPvs+(dual front camera) 12MP + 8MP56%
Higher resolution secondary camera to take pictures and selfies
Full HD (1920x1080)vs+4K UHD (3840x2160)3 times
More image quality for recording videos with the primary camera
(front) Full HD (1920x1080)vs+(front) 4K UHD (3840x2160)3 times
More image quality for recording videos with the secondary camera
Android 6.0 Marshmallowvs+Android 7.0 NougatAdvantage
Android 7.0 Nougat is newer and safer
Not supportedvs+Fingerprint sensorAdvantage
Sensors help you use the device
Not supportedvs+Active noise cancellationAdvantage
Noise-canceling microphone allows better call quality
4.0 + A2DPvs+4.2 + A2DPAdvantage
Bluetooth 4.2 + A2DP is newer and faster

25 Common items in both devices
16 million
1080x1920 pixels
401 PPI
5.5"
Only digital zoom
Autofocus / PDAF: phase detection autofocus
4G LTE
+18 specs and more in the table below

Check the comparison table below for more items that are not evaluated in comparison score above.

Highlight differencesClear highlight
Physical featuresAsus Zenfone Selfie (ZD551KL 16GB)Asus Zenfone 4 Selfie Pro (ZD552KL 64GB/4GB)
ModelZenfone Selfie (ZD551KL 16GB)Zenfone 4 Selfie Pro (ZD552KL 64GB/4GB)
Other model namesAsus Zenfone Selfie Dual Sim ZD551KLAsus Zenfone 4 Selfie Pro ZD552KL (64GB + 4GB RAM)
Country or region available(Global, International)
(Global, International)
BrazilChina(Europe)PhilippinesHong KongIndiaIndonesiaMalaysiaTaiwan(Global, International)
Brazil, China, (Europe), Philippines, Hong Kong, India, Indonesia, Malaysia, Taiwan, (Global, International)
BrandAsusAsus
Release dateJuly, 2015September, 2017
Depth10.8 millimeters (0.43 inches)6.85 millimeters (0.27 inches)
Size (width x height)77.2 x 156.5 millimeters (3.04 x 6.16 in)74.8 x 154 millimeters (2.94 x 6.06 in)
Weight170 grams (5.95 ounces)147 grams (5.15 ounces)
Qwerty physical keyboardNot supportedNot supported
AntennaInternal antennaInternal antenna
Build, materialsfeature not registeredfeature not registered
Protection against water and othersNot supportedNot supported
System (OS)Asus Zenfone Selfie (ZD551KL 16GB)Asus Zenfone 4 Selfie Pro (ZD552KL 64GB/4GB)
Operating systemAndroid 5.0.2 LollipopAndroid 7.0 Nougat
Firmware updateAndroid 6.0 Marshmallowfeature not registered
HardwareAsus Zenfone Selfie (ZD551KL 16GB)Asus Zenfone 4 Selfie Pro (ZD552KL 64GB/4GB)
Chipset64bit - Qualcomm Snapdragon 615 MSM8939 (28nm)64bit - Qualcomm Snapdragon 625 MSM8953 (14nm)
CPU processorOcta-Core, 2 processors:
1.7Ghz Quad-Core ARM Cortex-A53
1Ghz Quad-Core ARM Cortex-A53
2Ghz Octa-Core ARM Cortex-A53
GPU graphical controllerQualcomm Adreno 405Qualcomm Adreno 506 650Mhz
RAM memory2GB LPDDR34GB LPDDR3
Internal storage16GB (12GB available)64GB (54GB available)
eMMC 5.1
External storageUntil 64GB microSD, microSDXC
(dedicated slot)
Until 256GB microSD, microSDXC
(hybrid slot/shares the same SIM-2 slot)
DisplayAsus Zenfone Selfie (ZD551KL 16GB)Asus Zenfone 4 Selfie Pro (ZD552KL 64GB/4GB)
Display typeTFT IPS LCDAMOLED
Screen size5.5" inches5.5" inches
Screen-to-body ratio~69% (screen-to-body ratio)~72.4% (screen-to-body ratio)
Display resolution1080x1920 pixels1080x1920 pixels
TouchscreenCapacitive MultitouchCapacitive Multitouch 10-points
Pixel density (dot pitch)401 PPI401 PPI
Colors16 million16 million
Scratch-resistant glassGorilla Glass 4Gorilla Glass 5
Display featuresfeature not registeredfeature not registered
Mobile networksAsus Zenfone Selfie (ZD551KL 16GB)Asus Zenfone 4 Selfie Pro (ZD552KL 64GB/4GB)
Dual-SIMDual-SIM Standby - Call active on one sim card
(dedicated slot)
Dual-SIM Standby - Call active on one sim card
(hybrid slot/shares the same microSD slot)
SIM card2 slots (Dual-SIM)
micro-SIM (3FF)
2 slots (Dual-SIM)
nano-SIM (4FF)
Maximum download/upload150/50 Mbps150/50 Mbps
Network technology2G, 3G, 4G2G, 3G, 4G
Frequency, bandsExpand band detailsCollapse details
GSM Mhz bandQuad-Band 850/900/1800/1900Quad-Band 850/900/1800/1900
Primary 2G networkGSM 850/900/1800/1900GSM 850/900/1800/1900
Primary 3G networkUMTS 850/900/1900/2100Global version:
UMTS 850/900/2100

USA/Brazil version:
UMTS 850/900/1700/1900/2100

Taiwan/Japan/Hong Kong version:
UMTS 800/850/900/1900/2100
Primary 4G networkLTE Cat4 800/850/900/1800/1900/2100/2600 (Bands 1,2,3,5,7,8,20)LTE Cat4

Global version:
LTE (Bands 1,3,5,7,8,20)
TD-LTE (Bands 40)

USA/Brazil version:
LTE (Bands 1,2,3,4,5,7,8,12,17,28)

Taiwan/Japan/Hong Kong version:
LTE (Bands 1,3,5,7,8,18,19,26,28)
TD-LTE (Bands 38,41)
Primary 5G networkNot supportedNot supported
Primary data networkGPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, LTEGPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE
Secondary 2G networkGSM 850/900/1800/1900GSM 850/900/1800/1900
Secondary 3G networkNot supportedNot supported
Secondary 4G networkNot supportedNot supported
Secondary data networkGPRS, EDGEGPRS, EDGE
CallingAsus Zenfone Selfie (ZD551KL 16GB)Asus Zenfone 4 Selfie Pro (ZD552KL 64GB/4GB)
MessagingSMS (T9), MMS, E-mail, Push mailSMS (T9), MMS, E-mail, Push mail
SpeakerphoneSupportedSupported
Video callingSupportedSupported
Call controlVoice dialing, Voice recorderVoice dialing, Voice recorder, Voice commands
CameraAsus Zenfone Selfie (ZD551KL 16GB)Asus Zenfone 4 Selfie Pro (ZD552KL 64GB/4GB)
Back camera (main camera)13 megapixels16 megapixels
Main camera resolution4128x3096 pixels4608x3456 pixels
Video recording (primary)Full HD (1920x1080) 30 fps4K UHD (3840x2160) 30 fps
FlashDual-LED flashDual-LED on main camera and LED on front camera
Focal aperturef/2.0 (aperture)feature not registered
Focal lengthfeature not registered26mm lens
Sensor size1/3.2" inchesfeature not registered
Pixel sizefeature not registeredfeature not registered
AutofocusAutofocusPDAF: phase detection autofocus
Touch focusSupportedSupported
Image stabilizationfeature not registeredEIS: Digital stabilization
ZoomOnly digital zoomOnly digital zoom
Face/smile detectionFace detection, Smile detectionFace detection, Smile detection
BSI sensorSupportedNot supported
HDRHDR photo only main cameraHDR photo on both cameras
2ª cameraAsus Zenfone Selfie (ZD551KL 16GB)Asus Zenfone 4 Selfie Pro (ZD552KL 64GB/4GB)
Front camera (secondary)13 megapixels(dual front camera)
12 megapixels
8MP12mm120º
Front camera resolution4128x3096 pixels4000x3000 pixels
Video recording (secondary)Full HD (1920x1080)4K UHD (3840x2160)
Front flashNot supportedLED
Focal aperturefeature not registeredf/1.8 (aperture)
Focal lengthfeature not registered25mm lens
Sensor sizefeature not registered1/2.55" inches
Pixel sizefeature not registered1.4µm pixel
MultimediaAsus Zenfone Selfie (ZD551KL 16GB)Asus Zenfone 4 Selfie Pro (ZD552KL 64GB/4GB)
RadioFM (RDS)FM
TVNot supportedNot supported
Video formatsMP4, H.264, H.263MP4, H.264, H.263
Audio formatsMP3, WAV, eAAC+MP3, WAV, OGG, eAAC+, FLAC
ConnectivityAsus Zenfone Selfie (ZD551KL 16GB)Asus Zenfone 4 Selfie Pro (ZD552KL 64GB/4GB)
USBMicroUSB 2.0MicroUSB 2.0
TV outputMicro-B USB MHLNot supported
Audio output3.5mm jack3.5mm jack
Bluetooth4.0 + A2DP4.2 + A2DP
WiFi802.11 b/g/n/ac (2.4Ghz, 5Ghz)802.11 b/g/n (2.4Ghz)
DLNANot supportedNot supported
NFCNot supportedNot supported
GPSA-GPS, GeoTagging, GLONASSA-GPS, GeoTagging, GLONASS, BeiDou
Infrared portNot supportedNot supported
Other functionsAsus Zenfone Selfie (ZD551KL 16GB)Asus Zenfone 4 Selfie Pro (ZD552KL 64GB/4GB)
Active noise cancellationNot supportedSupported
Vibrating alertSupportedSupported
RingtonesPolyphonic and customizedPolyphonic and customized
Web browserHTML, XHTML, HTML5HTML, XHTML, HTML5
SensorsAccelerometer
Proximity sensor
Compass
Ambient Light sensor
Gyroscope
Hall effect
Accelerometer
Proximity sensor
Compass
Ambient Light sensor
Gyroscope
Fingerprint sensor
Other features- Colors: Pure White, Chic Pink, Aqua Blue
- ASUS ZenUI
- ASUS TruVivid
- Oleophobic coating on screen
- Laser autofocus camera
- Toshiba sensor camera
- 5GB ASUS WebStorage
- Beidou GPS
- WiFi direct, hotspot
- Colors: Rouge Red, Sunlight Gold, Deepsea Black
- Metal body
- ASUS ZenUI 4.0
- 2.5D screen glass
- DTS sound enhancement
- Hi-Res audio
- 24-bit/192kHz audio
- Slow motion 720p@120fps
- Sony IMX362 sensor front camera
- DuoPixel 24MP (2x12MP) front camera
- Fast battery charging
- VoLTE
- WiFi direct, hotspot
Power supplyAsus Zenfone Selfie (ZD551KL 16GB)Asus Zenfone 4 Selfie Pro (ZD552KL 64GB/4GB)
BatteryLiPo: Li-Ion polymer (Removable)LiPo: Li-Ion polymer (Non removable)
Battery capacity3000 mAh3000 mAh
Charger, watts Standard charging10W (5V/2A) Standard charging
Talk time autonomy1380 minutes | 23 hours | 1 day1800 minutes | 30 hours | 1.3 days
Standby15300 minutes | 255 hours | 10.6 daysfeature not registered
Radiation rateAsus Zenfone Selfie (ZD551KL 16GB)Asus Zenfone 4 Selfie Pro (ZD552KL 64GB/4GB)
SAR 1.6W/kg (USA, Mexico, etc.)feature not registeredfeature not registered
SAR 2W/kg (Europe, UK, etc.)feature not registeredfeature not registered
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