In depth comparison and review of ASUS Zenfone 8 and Samsung Galaxy Z Flip4. 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 8 | Samsung Galaxy Z Flip4 |
|---|
| Product Type | Smartphone | Smartphone | |
|---|---|---|---|
| Manufacturer Model Number | ZS590KS | SM-F721B | |
| Form Factor | Touch | Folder (flip) - touch screen, dual screen | |
| Height | 148 mm | 165.2 mm | Samsung Galaxy Z Flip4 has greater height than ASUS Zenfone 8. |
| Width | 68.5 mm | 71.9 mm | Samsung Galaxy Z Flip4 has greater width than ASUS Zenfone 8. |
| Depth | 8.9 mm | 6.9 mm | Samsung Galaxy Z Flip4 is narrower than ASUS Zenfone 8. |
| Weight | 169 g | 187 g | ASUS Zenfone 8 is lighter than ASUS Zenfone 8. |
| Dimensions Details | - | Unfolded - 71.9 mm x 6.9 mm x 165.2 mm Folded - 71.9 mm x 17.1 mm x 84.9 mm |
|
| Body Colour | Obsidian black | Blue | Bora purple | Pink gold | Graphite | |
| Body Material | - | Corning Gorilla Glass Victus, Armour Aluminium frame | |
| Protection | Drop-proof, water-resistant, dust-resistant | Water-resistant | |
| Waterproof (Water-resistant) | Yes | Yes | Both phones are waterproof. |
| IP rating | IP68, IP65 | IPX8 | |
| SAR Value | 1.582 W/kg (body), 1.412 W/kg (head), 3.498 W/kg (limb) | 2.75 W/kg (limb), 1.151 W/kg (head), 1.198 W/kg (body) | |
| Integrated Components | FM radio | - | |
| Connector Type | 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, Electronic SIM card (e-SIM) | |
| SIM Card Qty | Dual-SIM | Dual-SIM |
| DISPLAY | ASUS Zenfone 8 | Samsung Galaxy Z Flip4 |
|---|
| Display Type | OLED display | OLED display | |
|---|---|---|---|
| Display Technology | AMOLED | Dynamic AMOLED 2X | |
| Foldable Display | - | Yes | |
| Display Design | - | Inward folding | |
| Screen Size (Display Size) | 5.9" | 6.7" | Samsung Galaxy Z Flip4 has larger screen size than ASUS Zenfone 8. |
| Screen Resolution (Display Resolution) | 2400 x 1080 pixels | 2640 x 1080 pixels | Samsung Galaxy Z Flip4 has better screen resolution than ASUS Zenfone 8. |
| Display Format | Full HD+ | Full HD+ | |
| Pixel Density | - | 425 ppi | |
| Aspect Ratio | 20:9 | - | |
| Max Brightness | 1100 cd/m² | - | |
| Colour Depth | - | 16.7 million colours | |
| HDR | Yes | Yes | Both phones have HDR. |
| HDR Technology | HDR10+ | HDR10+ | |
| Display Enhancement Technology | DC Dimming | - | |
| Display Refresh Rate | 120 Hz | 120 Hz | Both phones have the same refresh rate. |
| Touch Sampling Rate | 240 Hz | - | |
| Display Features | Always-on display, Glove Touch, Delta-E < 1, 107% NTSC, 151.9% sRGB, 112% DCI-P3 | AOD(Always On Display), Video Wallpaper | |
| Display Protection (Screen Protector) | Corning Gorilla Glass Victus (scratch resistant glass) | Samsung Ultra Thin Glass |
| SECOND DISPLAY |
|---|
| Second Display Type | - | OLED display - colour | |
|---|---|---|---|
| Second Display Screen Size | - | 1.9" | |
| Second Display Resolution | - | 512 x 260 pixels | |
| Second Display Colour Depth | - | 16.7 million colours |
| UNFOLDED DISPLAY |
|---|
| Unfolded Display Screen Size | - | 6.7 in | |
|---|---|---|---|
| Unfolded Display Resolution | - | 2640 x 1080 pixels |
| PROCESSOR | ASUS Zenfone 8 | Samsung Galaxy Z Flip4 |
|---|
| Processor Type (CPU) | Qualcomm Snapdragon 888 5G | - | |
|---|---|---|---|
| Clock Speed | 2.842 GHz | 3.18 GHz | Samsung Galaxy Z Flip4 has higher clock speed than ASUS Zenfone 8. |
| Processor Core Qty | 8-core | 8-core | Both phones have the same number of phone cores. |
| Graphics System (GPU) | Qualcomm ADRENO 660 | - |
| MEMORY | ASUS Zenfone 8 | Samsung Galaxy Z Flip4 |
|---|
| RAM | LPDDR5 SDRAM - 8 GB | 8 GB | Both phones have the same RAM size. |
|---|---|---|---|
| Internal Memory Size (Storage Capacity) | 128 GB | 128 GB | Both phones have the same internal memory capacity. |
| User Memory | - | 99.8 GB | |
| Memory Interface | UFS 3.1 | UFS 3.1 |
| CAMERA | ASUS Zenfone 8 | Samsung Galaxy Z Flip4 |
|---|
| MAIN CAMERA |
|---|
| Number of Main Cameras | 2 | 2 | |
|---|---|---|---|
| Sensor Resolution | 64 Megapixel | 12 Megapixel | ASUS Zenfone 8 has better camera resolution than Samsung Galaxy Z Flip4. |
| Sensor Size | 1/1.7" | - | |
| Sensor Name | Sony Exmor RS IMX686 sensor | - | |
| Lens Type | Wide-angle lens | Wide-angle lens | |
| Lens Aperture | F/1.8 | F/1.8 | Both phones have the same camera lens aperture. |
| Field of View (FoV) | 78.3 degree(s) | 83 degree(s) | Samsung Galaxy Z Flip4 has larger lens field of view than ASUS Zenfone 8. |
| Pixel Size | 1.6 μm | 1.8 μm | Samsung Galaxy Z Flip4 has larger camera pixel size than ASUS Zenfone 8. |
| Optical Image Stabiliser (OIS) | Optical Image Stabiliser (OIS) | Optical Image Stabiliser (OIS) | Both phones have optical image stabilization. |
| Focus Adjustment | - | Automatic | |
| Minimum Focal Length (Focal Distance) | 26.6 mm | - | |
| Digital Zoom | - | 10x | |
| Self-Timer Delay | - | Yes | |
| Special Effects | - | HDR, Grid Line | |
| Camera Modes | Slow motion video, Time-lapse mode, Pro mode | Panorama, Slow motion mode, Pro mode, HYPERLAPSE, Quick Shot, Super Slow-mo, Flowers, Greenery, Trees, Sky, Beaches, Watersides, Snow, Backlit, Text, Food, Face, Baby, Person, Dog, Cat, People, Sunset, Sunrise, City, Waterfall, Scenery, Stage, Vehicles, Drinks, Animal, Shoes, Indoor, Clothes, Night view, Portrait, Night, Mountain, Filter mode, Single Take, Pro Video, Portrait video, Director's View | |
| Light Source | LED flash | High CRI 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, 3840 x 2160 (4K) at 30 fps, 3840 x 2160 (4K) at 60 fps, Slo-mo video 1920 x 1080 (1080p) at 240 fps, Slo-mo video 1280 x 720 (720p) at 480 fps, 7680 x 4320 (8K) at 24 fps, Slo-mo video 3840 x 2160 (4K) at 120 fps | 1920 x 1080 (1080p) at 30 fps, 1920 x 1080 (1080p) at 60 fps, 1280 x 720 (720p) at 30 fps, 3840 x 2160 (4K) at 30 fps, 3840 x 2160 (4K) at 60 fps, Super slow motion video 1280 x 720 (720p) at 960 fps, Slo-mo video 1920 x 1080 (1080p) at 240 fps, Hyperlapse 4K video support at 30 fps, Super Steady 1080p video support at 30 fps | |
| Camera Features (Functions) | Phase Detect Auto-Focus (PDAF), 3-axis electronic image stabilisation, 4-axis optical image stabilisation, Motion tracking, Quad Bayer technology, 2x1 On-Chip Lens (OCL) | Playback zoom, Motion photo, QR-code scanner, RAW image capture, VDIS (Video Digital Image Stabilisation), Tracking AF, Video location tags, Dual Pixel Autofocus technology, AR sticker, Scene Optimiser, Flaw detection, Shot suggestions, AR Emoji, HDR10+ recording, Super steady, HEIF image capture, AR Doodle, Microphone Control, HEVC (High Efficiency Video coding), Dual preview, Auto framing, Corning Gorilla Glass DX (protective lens glass), Auto FPS, AR Emoji Studio, Deco PIC, FlexCam |
| SECOND CAMERA |
|---|
| Sensor Resolution (2nd Camera) | 12 Megapixel | 12 Megapixel | Both phones have the same second camera resolution. |
|---|---|---|---|
| Sensor Size (2nd Camera) | 1/2.55" | - | |
| Sensor Name (2nd Camera) | Sony Exmor RS IMX363 sensor | - | |
| Lens Type (2nd Camera) | Ultra wide-angle lens | Ultra wide-angle lens | |
| Lens Aperture (2nd Camera) | F/2.2 | F/2.2 | Both phones have the same second camera lens aperture. |
| Field of View (2nd Camera) | - | 123 degree(s) | |
| Pixel Size (2nd Camera) | 1.4 μm | 1.12 μm | ASUS Zenfone 8 has larger second camera pixel size than Samsung Galaxy Z Flip4. |
| Focal Length Equivalent to 35mm Camera | 14.3 | - | |
| Camera Features (2nd Camera) | Real-time distortion correction, 4cm macro photography, Dual Phase Detect Auto-Focus (PDAF) | - |
| FRONT CAMERA |
|---|
| Number of Front Cameras | 1 | 1 | |
|---|---|---|---|
| Sensor Resolution (Front) | 12 Megapixel | 10 Megapixel | ASUS Zenfone 8 has better front camera resolution than Samsung Galaxy Z Flip4. |
| Sensor Name (Front) | Sony Exmor RS IMX663 sensor | - | |
| Lens Aperture (Front) | F/2.4 | F/2.4 | Both phones have the same front camera lens aperture. |
| Field of View (Front) | - | 80 degree(s) | |
| Pixel Size (Front) | 1.22 μm | 1.22 μm | Both phones have the same front camera pixel size. |
| Focus Adjustment | Automatic | Focus free | |
| Camera Modes (Front) | Portrait | - | |
| Camera Features (Front) | Dual Pixel technology, EIS video stabilisation, Dual Phase Detect Auto-Focus (PDAF) | - |
| BATTERY AND CHARGING | ASUS Zenfone 8 | Samsung Galaxy Z Flip4 |
|---|
| Battery Capacity (Battery Size) | 4000 mAh | 3700 mAh | ASUS Zenfone 8 has larger battery capacity than Samsung Galaxy Z Flip4. |
|---|---|---|---|
| Fast Charging Technology | Qualcomm Quick Charge 4.0, Power Delivery 3.0 | Qualcomm Quick Charge 2.0, Adaptive Fast Charging | Both phones have fast charging technology. |
| Wireless Charging | - | Yes | Samsung Galaxy Z Flip4 can be charged wirelessly. |
| Wireless Charging Standards | - | WPC, Qi, Fast Wireless Charging 2.0, Wireless PowerShare, Reverse wireless charging | |
| Talk Time | - | 2040 minutes | |
| Run Time Details | - | Talk (4G): up to 2040 min Active online usage (LTE): up to 16 hrs Active online usage (Wi-Fi): up to 16 hrs Playback (wireless video): up to 19 hrs Playback (wireless audio): up to 56 hrs |
| CELLULAR | ASUS Zenfone 8 | Samsung Galaxy Z Flip4 |
|---|
| Technology | WCDMA (UMTS) / GSM | WCDMA (UMTS) / GSM | |
|---|---|---|---|
| Mobile Broadband Generation | 5G | 5G | Both phones have the same mobile network generation. |
| Operating System | Android 11 | Android 12 | |
| User Interface | ASUS ZenUI 8.0 | One UI | |
| Intelligent Assistant | - | Bixby | |
| Payment Technology | - | Samsung Pay | |
| Navigation | GPS, GLONASS, BeiDou, Galileo, QZSS, NavIC | GPS, GLONASS, BeiDou, Galileo, QZSS |
| COMMUNICATIONS | ASUS Zenfone 8 | Samsung Galaxy Z Flip4 |
|---|
| Data Transmission | GPRS, EDGE, HSPA+, FDD-LTE, TDD-LTE, DC-HSPA+, Gigabit LTE, 5G NR FR1 | FDD-LTE, TDD-LTE, LAA, 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 3, Band 4, Band 5, Band 6, Band 8, Band 19 | Band 1, Band 2, Band 4, Band 5, Band 8 | |
| 3G UMTS Frequency | 2100, 1900, 1800, 1700, 850, 800, 900, 800 | 2100, 1900, 1700, 850, 900 | |
| 4G LTE Band | 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 34, Band 38, Band 39, Band 40, Band 41, Band 42 | 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 700b, FDD 800 lower, FDD 800 upper, FDD 800 DD, FDD 850+, FDD 700 APT, TDD 2000, TDD 2600, TDD 1900, TDD 2300, TDD 2500, TDD 3500 | 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, n2, n3, n5, n7, n8, n20, n28, n38, n77, n78, n12 | N1, n2, n3, n5, n7, n8, n20, n28, n38, n41, n66, n75, n77, n78, n40, n25, n12 | |
| 5G NR Frequency | FDD 2100, FDD 1900PCS, FDD 1800, FDD 850, FDD 2600, FDD 900, FDD 800, FDD 700APT, TDD TD 2600, TDD TD 3700, TDD TD 3500, n12 | FDD 2100, FDD 1900PCS, FDD 1800, FDD 850, FDD 2600, FDD 900, FDD 800, FDD 700APT, TDD TD 2600, TDD TD 2500, FDD AWS-3, SDL DL 1500+, TDD TD 3700, TDD TD 3500, TDD 2300, FDD 1900, n12 | |
| Wireless Interface | IEEE 802.11a/b/g/n/ac/ax | IEEE 802.11a/b/g/n/ac/ax | |
| Bluetooth | Bluetooth 5.2 EDR | Bluetooth 5.2 LE | |
| Bluetooth Profiles | HFP, OPP, PAN, A2DP, AVRCP, HID | - | |
| NFC | Yes | Yes | Both phones have an NFC reader for mobile payments. |
| Modem | Snapdragon X60 5G | - |
| MEDIA | ASUS Zenfone 8 | Samsung Galaxy Z Flip4 |
|---|
| Supported Digital Audio Standards | - | WAV, AAC, PCM, AMR, MP3, FLAC, XMF, OGG, MIDI, APE (Monkey's Audio), M4A, DSF, MXMF, OGA, 3GA, AWB, IMY, RTTTL, RTX, OTA, DFF, MID, DSD64, DSD128 | |
|---|---|---|---|
| Supported Digital Video Standards | - | MKV, FLV, AVI, 3GP, M4V, WebM, 3G2, MP4 | |
| Sound Enhancements | Dirac HD Sound, ASUS Audio Wizard, Hi-Res audio certified, OZO Audio, Qualcomm aptX audio, Qualcomm aptX HD audio, Qualcomm aptX Adaptive | Dolby Digital Plus sound, Dolby Atmos sound technology, Dolby Digital sound | |
| Audio Amplifier | Dual Cirrus Logic CS35L45 | - |
| FEATURES | ASUS Zenfone 8 | Samsung Galaxy Z Flip4 |
|---|
| Sensors | Accelerometer, ambient light sensor, proximity sensor, digital compass, G-sensor, gyroscope | Accelerometer, proximity sensor, barometer, gyro sensor, hall sensor, geomagnetic sensor, light sensor | |
|---|---|---|---|
| Security Devices | Fingerprint reader (under display), face recognition | Face recognition, fingerprint reader (side) | |
| Additional Phone Features | MIMO technology, AudioWizard, One Hand Mode, ARCore, Triple internal microphones with ASUS Noise Reduction Technology, Multi-Magnet Stereo Speakers | MIMO technology, Samsung KNOX, High AOP Mic, Bixby Vision, Secure Folder function, TalkBack, Dual Audio, Bixby Routines, Intelligent Performance Enhancer, Samsung Smart Switch, Flex mode |
| OTHERS | ASUS Zenfone 8 | Samsung Galaxy Z Flip4 |
|---|
| Included Accessories | SIM card removal tool, USB-C to USB-C cable, protective case, power adapter (30 W) | SIM card removal tool, USB-C cable | |
|---|---|---|---|
| Compliant Standards | IP68, IP65, SGS Eye Care Display Certification, SGS Seamless Pro 120Hz Certification | VDE, IPX8 | |
| Max Depth of Water Resistance | - | 1.5 m | |
| Max Height of Shock Resistance | 2 m | - |
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