System: Android 7.0 with ASUS ZenUI
Processor: 2.0 GHz / Octa Core / Qualcomm Snapdragon 625 / GPU: Adreno 506
Memory: Internal: 64 GB / RAM: 4 GB / Slot type: microSD / Max. slot capacity: 2 TB
Display: 5.5" / Full HD AMOLED / Resolution: 1920 x 1080 pixels
Camera: Primary: 16 MP / ASUS SuperPixel / Flash: LED real tone / PDAF / Video: 4K UHD / Front: 24 MP (12MP x 2) DuoPixel with Sony IMX362 sensor, 6p lens, F1.8 aperture, 4K UHD selfie video
Network: 4G: LTE Band 1/3/5/7/8/18/19/26/28/38/41 / 3G: 800/850/900/1800/1900/2100 MHz / GSM: 850/900/1800/1900 MHz
SIM card: Type: nano-SIM / Slot: Hybrid dual SIM (Optional: microSD)
Wireless: Bluetooth: 4.2 / Wi-Fi: 802.11 b/g/n
Connection: Jack 3.5 mm / micro USB
Location: GPS, aGPS, GLONASS, BeiDou
Sensors: Accelerator, Ambient light sensor, eCompass, Fingerprint, Gyroscope, Proximity sensor, RGB sensor
Battery: 3000 mAh (Built-in) / Fast Charging
Weight: 147 g
Dimensions: 154.02 x 74.83 x 6.85 mm
In the box: ASUS ZenFone 4 Selfie Pro ZD552KL, ASUS ZenEar with Microphone, micro USB Cable, USB Power Adapter, Documentation

System: Android 7.0 with ASUS ZenUI
Processor: 2.2 GHz / Octa Core / Qualcomm Snapdragon 630 / GPU: Adreno 508
Memory: Internal: 64 GB / RAM: 4 GB / Slot type: microSD / Max. slot capacity: 2 TB
Display: 5.5" / IPS display / Resolution: 1920 x 1080 pixels
Camera: Primary: 12 MP, Wide: 8 MP / Sony IMX362 / f/1.8, 1.4μm / Dual Pixel PDAF / OIS/EIS / Video: 4K UHD / Front: 8 MP
Network: 4G: LTE Band 1/2/3/5/7/8/18/19/28/38/39/40/41 / 3G: 800/850/900/1800/1900/2100 MHz / GSM: 850/900/1800/1900 MHz
SIM card: Type: nano-SIM / Slot: Hybrid dual SIM (Optional: microSD)
Wireless: Bluetooth: 5.0 / Wi-Fi: 802.11 a/b/g/n/ac / NFC
Connection: Jack 3.5 mm / USB Type-C
Location: GPS, aGPS, GLONASS, BeiDou
Sensors: Ambient light sensor, Digital Compass, Fingerprint, G-sensor, Gyroscope, Hall sensor, Proximity sensor, RGB sensor
Battery: 3300 mAh (Built-in) / BoostMaster Fast Charging
Weight: 165 g
Dimensions: 155.4 x 75.2 x 7.5 mm
In the box: ASUS ZenFone 4 ZE554KL, ASUS earphone with Mic, USB Type C Cable, Bumper, USB Power Adapter, Documentation

System: Android 7.0 with ASUS ZenUI
Processor: 2.2 GHz / Octa Core / Qualcomm Snapdragon 660 / GPU: Adreno 512
Memory: Internal: 64 GB / RAM: 6 GB / Slot type: microSD / Max. slot capacity: 2 TB
Display: 5.5" / IPS display / Resolution: 1920 x 1080 pixels
Camera: Primary: 12 MP, Wide: 8 MP / Sony IMX362 / f/1.8, 1.4μm / Dual Pixel PDAF / OIS/EIS / Video: 4K UHD / Front: 8 MP
Network: 4G: LTE Band 1/2/3/5/7/8/18/19/28/38/39/40/41 / 3G: 800/850/900/1800/1900/2100 MHz / GSM: 850/900/1800/1900 MHz
SIM card: Type: nano-SIM / Slot: Hybrid dual SIM (Optional: microSD)
Wireless: Bluetooth: 5.0 / Wi-Fi: 802.11 a/b/g/n/ac / NFC
Connection: Jack 3.5 mm / USB Type-C
Location: GPS, aGPS, GLONASS, BeiDou
Sensors: Ambient light sensor, Digital Compass, Fingerprint, G-sensor, Gyroscope, Hall sensor, Proximity sensor, RGB sensor
Battery: 3300 mAh (Built-in) / BoostMaster Fast Charging
Weight: 165 g
Dimensions: 155.4 x 75.2 x 7.5 mm
In the box: ASUS ZenFone 4 ZE554KL, ASUS earphone with Mic, USB Type C Cable, Bumper, USB Power Adapter, Documentation