In depth comparison and review of ASUS ZenFone 4 (ZE554KL) and ASUS ZenFone 5Z (ZS620KL). 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.
| DESIGN AND DIMENSIONS | ASUS ZenFone 4 (ZE554KL) | ASUS ZenFone 5Z (ZS620KL) |
|---|
| Product Type | Smartphone | Smartphone | |
|---|---|---|---|
| Manufacturer Model Number | ZE554KL | ZS620KL | |
| Form Factor | Touch | Touch | |
| Height | 155.36 mm | 153 mm | ASUS ZenFone 4 (ZE554KL) has greater height than ASUS ZenFone 5Z (ZS620KL). |
| Width | 75.24 mm | 75.65 mm | ASUS ZenFone 5Z (ZS620KL) has greater width than ASUS ZenFone 4 (ZE554KL). |
| Depth | 7.7 mm | 7.7 mm | Both phones are the same depth. |
| Weight | 165 g | 155 g | ASUS ZenFone 5Z (ZS620KL) is lighter than ASUS ZenFone 4 (ZE554KL). |
| Body Colour | Midnight black | Moonlight white | Midnight blue | Meteor silver | |
| Body Material | - | Aluminium | |
| Waterproof (Water-resistant) | - | - | |
| SAR Value | 1.48 W/kg (body), 1.42 W/kg (head) | - | |
| Integrated Components | FM radio | FM radio | |
| Connector Type | Headset jack - mini-phone 3.5mm USB Type-C - 24 pin USB-C |
Headset jack - mini-phone 3.5mm 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 | Nano SIM + nano SIM/microSD |
| DISPLAY | ASUS ZenFone 4 (ZE554KL) | ASUS ZenFone 5Z (ZS620KL) |
|---|
| Display Type | LCD display | LCD display | |
|---|---|---|---|
| Display Technology | Super IPS+ | IPS+ | |
| Screen Size (Display Size) | 5.5" | 6.2" | ASUS ZenFone 5Z (ZS620KL) has larger screen size than ASUS ZenFone 4 (ZE554KL). |
| Screen Resolution (Display Resolution) | 1920 x 1080 pixels | 2246 x 1080 pixels | ASUS ZenFone 5Z (ZS620KL) has better screen resolution than ASUS ZenFone 4 (ZE554KL). |
| Display Format | Full HD | - | |
| Pixel Density | - | 402 ppi | |
| Aspect Ratio | - | 18:5:9 | |
| Max Brightness | 600 cd/m² | 550 cd/m² | ASUS ZenFone 4 (ZE554KL) has better display brightness than ASUS ZenFone 5Z (ZS620KL). |
| Display Enhancement Technology | Bluelight Filter for Eye Care, Splendid technology | Bluelight Filter for Eye Care | |
| Display Features | 2.5D Glass | DCI-P3 Wide colour gamut, Auto Colour Temperature, Smart Screen On | |
| Display Protection (Screen Protector) | Corning Gorilla Glass (scratch resistant glass), smudge-resistant oleophobic coating | Corning Gorilla Glass (scratch resistant glass), smudge-resistant oleophobic coating |
| PROCESSOR | ASUS ZenFone 4 (ZE554KL) | ASUS ZenFone 5Z (ZS620KL) |
|---|
| Processor Type (CPU) | Qualcomm Snapdragon 630 | Qualcomm Snapdragon 845 | |
|---|---|---|---|
| Clock Speed | 2.2 GHz | - | |
| Processor Core Qty | 8-core | 8-core | Both phones have the same number of phone cores. |
| 64-bit Architecture | Yes | Yes | Both phones have 64-bit architecture. |
| Graphics System (GPU) | Qualcomm ADRENO 508 | Qualcomm ADRENO 630 |
| MEMORY | ASUS ZenFone 4 (ZE554KL) | ASUS ZenFone 5Z (ZS620KL) |
|---|
| RAM | LPDDR4X SDRAM - 4 GB | LPDDR4X SDRAM - 4 GB | Both phones have the same RAM size. |
|---|---|---|---|
| Internal Memory Size (Storage Capacity) | 64 GB | 64 GB | Both phones have the same internal memory capacity. |
| Supported Flash Memory Cards (Expandable Memory) | microSDHC, microSDXC - up to 2 TB | microSDHC, microSDXC - up to 2 TB |
| CAMERA | ASUS ZenFone 4 (ZE554KL) | ASUS ZenFone 5Z (ZS620KL) |
|---|
| MAIN CAMERA |
|---|
| Number of Main Cameras | 2 | 2 | |
|---|---|---|---|
| Sensor Resolution | 12 Megapixel | 12 Megapixel | Both phones have the same camera resolution. |
| Sensor Size | 1/2.55" | 1/2.55" | Both phones have the same camera sensor size. |
| Sensor Name | Sony Exmor RS IMX362 sensor | Sony Exmor RS IMX363 sensor | |
| Lens Aperture | F/1.8 | F/1.8 | Both phones have the same camera lens aperture. |
| Lens Construction | 6-element | 6-element | |
| Optical Image Stabiliser (OIS) | 4 Stop OIS (Optical Image Stabilisation) | 4 Stop OIS (Optical Image Stabilisation) | Both phones have optical image stabilization. |
| Focus Adjustment | Automatic | - | |
| Special Effects | HDR | Night HDR | |
| HDR Mode | - | Auto HDR mode | |
| Camera Modes | Panorama, Time-lapse mode, Pro mode, Beauty mode, Auto mode, super resolution mode, GIF animation function, portrait mode | Panorama, Pro mode, Beauty mode, Auto mode, super resolution mode, GIF animation function, Real-Time Beautification, Real-time Protrait, Time Lapse (with power saving 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 | 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) | Dual Pixel technology, Phase Detect Auto-Focus (PDAF), 3-axis electronic image stabilisation, RAW image capture, 4-axis optical image stabilisation, Instant cameras switching, Live Emoji, 8 filters, AI Photo Learning, 32s long exposure |
| SECOND CAMERA |
|---|
| Sensor Resolution (2nd Camera) | 8 Megapixel | 8 Megapixel | Both phones have the same second camera resolution. |
|---|---|---|---|
| Lens Type (2nd Camera) | Wide-angle lens | Wide-angle lens | |
| Camera Features (2nd Camera) | - | 3-axis electronic image stabilisation |
| FRONT CAMERA |
|---|
| Number of Front Cameras | 1 | 1 | |
|---|---|---|---|
| Sensor Resolution (Front) | 8 Megapixel | 8 Megapixel | Both phones have the same front camera resolution. |
| Lens Type (Front) | - | Wide-angle lens | |
| Lens Aperture (Front) | F/2.0 | F/2.0 | Both phones have the same front camera lens aperture. |
| Special Effects (Front) | Collage | Night HDR | |
| HDR Mode (Front) | - | Auto HDR mode | |
| Camera Modes (Front) | Beauty mode, Auto mode, selfie panorama, GIF animation function, portrait mode, Smart beautification, Livestream beautification | Beauty mode, Auto mode, selfie panorama, GIF animation function | |
| Camera Features (Front) | PixelMaster camera, ASUS SelfieMaster technology, 9 filters | PixelMaster camera, Electronic Image Stabiliser (EIS), 8 filters |
| BATTERY AND CHARGING | ASUS ZenFone 4 (ZE554KL) | ASUS ZenFone 5Z (ZS620KL) |
|---|
| Battery Capacity (Battery Size) | 3300 mAh | 3300 mAh | Both phones have the same battery capacity. |
|---|---|---|---|
| Fast Charging Technology | ASUS Boost Master | BoostMaster Fast Charging | Both phones have 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 | Lithium polymer |
| CELLULAR | ASUS ZenFone 4 (ZE554KL) | ASUS ZenFone 5Z (ZS620KL) |
|---|
| Technology | WCDMA (UMTS) / GSM | WCDMA (UMTS) / GSM | |
|---|---|---|---|
| Mobile Broadband Generation | 4G | 4G | Both phones have the same mobile network generation. |
| Operating System | Android 7.0 Nougat | Android 9.0 Pie | |
| User Interface | ASUS ZenUI 4.0 | ASUS ZenUI 5.0 | |
| Navigation | GPS, A-GPS, GLONASS, BeiDou, Galileo | GPS, A-GPS, GLONASS, BeiDou |
| COMMUNICATIONS | ASUS ZenFone 4 (ZE554KL) | ASUS ZenFone 5Z (ZS620KL) |
|---|
| Data Transmission | GPRS, EDGE, HSDPA, HSUPA, HSPA+, FDD-LTE, TDD-LTE, DC-HSPA+ | GPRS, EDGE, HSDPA, HSUPA, HSPA+, LTE, FDD-LTE, TDD-LTE, DC-HSPA+ | |
|---|---|---|---|
| 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 3, Band 5, Band 6, Band 8, Band 19 | - | |
| 3G UMTS Frequency | 2100, 1900, 1800, 850, 800, 900, 800 | - | |
| 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 | - | |
| 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 | - | |
| Wireless Interface | IEEE 802.11a/b/g/n/ac | IEEE 802.11ac | |
| Bluetooth | Bluetooth 5.0 | Bluetooth 5.0 | |
| Bluetooth Profiles | - | A2DP | |
| NFC | Yes | Yes | Both phones have an NFC reader for mobile payments. |
| Messaging Services | SMS, MMS | SMS, MMS |
| MEDIA | ASUS ZenFone 4 (ZE554KL) | ASUS ZenFone 5Z (ZS620KL) |
|---|
| Sound Enhancements | DTS-HD Premium Sound, Hi-Res audio, DTS Headphone:X | ASUS BoostMaster technology, Hi-Res audio, DTS Headphone:X |
|---|
| FEATURES | ASUS ZenFone 4 (ZE554KL) | ASUS ZenFone 5Z (ZS620KL) |
|---|
| 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 | Ambient light sensor, proximity sensor, digital compass, gyro sensor, G-sensor, hall sensor, RGB sensor | |
| Security Devices | - | Face recognition, 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) | Face Unlock, AudioWizard, NXP Smart AMP technology, ASUS Noise Reduction technology, Google Drive Storage (100 GB) (free for 1 year), Dual Smart AMP, Dual noise-cancelling microphones, AI Charging, AI Boost, ZeniMoji |
| OTHERS | ASUS ZenFone 4 (ZE554KL) | ASUS ZenFone 5Z (ZS620KL) |
|---|
| Included Accessories | Power adapter, SIM card removal tool, ASUS ZenEar with Mic, USB-C cable | Power adapter, USB-C cable, ASUS ZenEar S Hi-Res earphone with microphone |
|---|
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