Asus Zenfone 5Z (ZS621KL 256GB) vs Samsung Galaxy Z Flip 4 (SM-F721B 128GB)
Side by side comparison between Asus Zenfone 5Z vs Samsung Galaxy Z Flip 4 phones, differences, pros, cons and full specifications. What's the better?
,
6.2"
IPS
IPS
1080x2246
12
MP
MP
8mp
8GB
RAM
RAM
Octa-core
3300
mAh
mAh
(Non removable)
vs
6.7"
AMOLED
AMOLED
1080x2640
12.2
MP
MP
10mp
8GB
RAM
RAM
Octa-core
3700
mAh
mAh
(Non removable)
What's the better phone? Samsung Galaxy Z Flip 4 (SM-F721B 128GB)
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!
22 Common items in both devices |
Aluminum frame, glass front/back / Aluminum frame, flexible plastic screen, glass back |
16 million |
Only digital zoom |
PDAF: phase detection autofocus |
OIS (4-axis): Optical stabilization / OIS: Optical stabilization |
HDR photo on both cameras / HDR photo/video on both cameras |
f/1.8 (aperture) |
+15 specs and more in the table below |
Check the comparison table below for more items that are not evaluated in comparison score above.
Highlight differences Clear highlight📱 Model features | ||
Asus Zenfone 5Z (ZS621KL 256GB) | Galaxy Z Flip 4 (SM-F721B 128GB) | |
Model | Zenfone 5Z (ZS621KL 256GB) | Galaxy Z Flip 4 (SM-F721B 128GB) |
Other model names | Asus Zenfone 5z 8GB RAM (ZS621KL), ASUS_Z01RD | Galaxy Z Flip4 5G (SM-F721B) |
Country or region available | India | (Global, International) |
Brand | Asus | Samsung |
Release date | 6/1/2018 | 8/25/2022, Announced: 8/10/2022 |
Depth | 7.9 millimeters (0.31 inches) | 6.9 millimeters (0.27 inches) |
Size (width x height) | 75.65 x 153 millimeters (2.98 x 6.02 in) | 71.9 x 165.2 millimeters (2.83 x 6.5 in) |
Weight | 165 grams (5.78 ounces) | 187 grams (6.55 ounces) |
Build, materials | Aluminum frame, glass front/back | Aluminum frame, flexible plastic screen, glass back Back: Gorilla Glass Victus+ Folded: 15.9 x 71.9 x 84.9 mm |
Protection against water and others | Not supported | IPX8 certified: water resistant up to 1.5 meters and 30min |
📲 Display | ||
Asus Zenfone 5Z (ZS621KL 256GB) | Galaxy Z Flip 4 (SM-F721B 128GB) | |
Display type | TFT IPS LCD | Dynamic AMOLED |
Screen size | 6.2" inches | 6.7" inches |
Screen-to-body ratio | ~83.7% (screen-to-body ratio) | ~85.4% (screen-to-body ratio) |
Display resolution | 1080x2246 pixels (18.7:9) | 1080x2640 pixels |
Touchscreen | Capacitive Multitouch 10-points | Capacitive Multitouch |
Pixel density (dot pitch) | 402 PPI | 426 PPI |
Colors | 16 million | 16 million |
Scratch-resistant glass | Gorilla Glass | Not supported |
Refresh rate | 60Hz | 120Hz |
Display features | 550nits[typ] | 1200nits[peak] HDR10+ Always-On Display Extra display: Super AMOLED 1.9" (260x512), Gorilla Glass Victus+ |
🤖 Operating System | ||
Asus Zenfone 5Z (ZS621KL 256GB) | Galaxy Z Flip 4 (SM-F721B 128GB) | |
System version | Android 8.0 Oreo | Android 12 |
Firmware update | Android 10 | Android 14 |
User Interface | feature not registered | One UI 4.1 / 5.1 / 6.0 |
⚙️ Processor | ||
Asus Zenfone 5Z (ZS621KL 256GB) | Galaxy Z Flip 4 (SM-F721B 128GB) | |
Chipset | 64bit: Qualcomm Snapdragon 845 MSM8998 (10nm) | 64bit: Qualcomm Snapdragon 8+ Gen 1 (SM8475) (4nm) |
CPU | Octa-core, 2 processors: 4x 2.7GHz Kryo 385 Gold (Quad-core) 4x 1.7GHz Kryo 385 Silver (Quad-core) | Octa-core, 3 processors: 1x 3.19GHz ARM Cortex-X2 (Single-core) 3x 2.75GHz ARM Cortex-A710 (Triple-core) 4x 2GHz ARM Cortex-A510 (Quad-core) |
GPU graphical controller | Qualcomm Adreno 630 710Mhz | Qualcomm Adreno 730 (818MHz) |
Performance (benchmark) | feature not registered | AnTuTu: 685765 (v8), 800001 (v9) Geekbench: 3913 (v5.1) GFXBench: 74fps (ES 3.1 onscreen) |
💽 Memory and storage | ||
Asus Zenfone 5Z (ZS621KL 256GB) | Galaxy Z Flip 4 (SM-F721B 128GB) | |
RAM memory | 8GB LPDDR4X | 8GB LPDDR5 |
Internal storage | 256GB (240GB available) UFS 2.1 | 128GB (99GB available) UFS 3.1 |
External storage | Until 1TB microSD, microSDXC (hybrid slot/shares the same SIM-2 slot) | Not supported |
📶 Mobile networks | ||
Asus Zenfone 5Z (ZS621KL 256GB) | Galaxy Z Flip 4 (SM-F721B 128GB) | |
Dual-SIM | Dual-SIM Standby - Call active on one sim card (hybrid slot/shares the same microSD slot) | Dual-SIM Standby - Call active on one sim card |
SIM card | 2 slots (Dual-SIM) nano-SIM (4FF) | 1 slot (Single-SIM) nano-SIM (4FF) + e-SIM |
Maximum Download / Upload | 800/100 Mbps | 3000/1024 Mbps |
Network technology | 2G, 3G, 4G | 2G, 3G, 4G, 5G |
Frequency, bands | Expand band details Collapse details | |
GSM MHz band | Quad-Band 850/900/1800/1900 | Quad-Band 850/900/1800/1900 |
Primary 2G network | GSM 850/900/1800/1900 | GSM 850/900/1800/1900 |
Primary 3G network | UMTS 800/850/900 | UMTS 850/900/1700/1900/2100 |
Primary 4G network | LTE Cat15 (Bands 1,2,3,5,7,8,18,19,20,26,28) TD-LTE (Bands 38,39,40,41) | LTE Cat20 (1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 66) TD-LTE (38, 39, 40, 41) VoLTE |
Primary 5G network | Not supported | SA/NSA/Sub6 (1, 2, 3, 5, 7, 8, 12, 20, 25, 28, 38, 40, 41, 66, 77, 78) |
Primary data network | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A, SA/NSA, Sub6 |
Secondary 2G network | GSM 850/900/1800/1900 | GSM 850/900/1800/1900 |
Secondary 3G network | Not supported | UMTS 850/900/1700/1900/2100 |
Secondary 4G network | Not supported | LTE Cat20 (1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 66) TD-LTE (38, 39, 40, 41) VoLTE |
Secondary data network | GPRS, EDGE | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A, SA/NSA, Sub6 |
📷 Camera | ||
Asus Zenfone 5Z (ZS621KL 256GB) | Galaxy Z Flip 4 (SM-F721B 128GB) | |
Back camera (main camera) | (dual camera) 12 megapixels 8MP ultrawide f/2.012mm1/4"1.12µmFF | (dual camera) 12.2 megapixels 12MP ultrawide f/2.2123°1.12µm |
Main camera resolution | 4000x3000 pixels | 4032x3024 pixels |
Video recording (primary) | 4K UHD (3840x2160) 30 fps | 4K UHD (3840x2160) 60 fps |
Flash | Dual-LED flash | LED flash |
Focal aperture | f/1.8 (aperture) | f/1.8 (aperture) |
Focal length | 24mm lens | 24mm lens |
Sensor size | 1/2.55" inches | 1/1.76" inches |
Pixel size | 1.4µm pixel | 1.8µm pixel |
Autofocus | PDAF: phase detection autofocus | PDAF: phase detection autofocus |
Touch focus | Supported | Supported |
Image stabilization | OIS (4-axis): Optical stabilization | OIS: Optical stabilization |
Zoom | Only digital zoom | Only digital zoom |
Face/smile detection | Face detection, Smile detection | Face detection, Smile detection |
BSI sensor | Not supported | Supported |
HDR | HDR photo on both cameras | HDR photo/video on both cameras |
Camera extras | feature not registered | 4K@30/60fps 1080p@30/60/240fps 720p@960fps HDR10+ Slow motion |
📸 Front camera | ||
Asus Zenfone 5Z (ZS621KL 256GB) | Galaxy Z Flip 4 (SM-F721B 128GB) | |
Front camera (secondary) | 8 megapixels | 10 megapixels |
Front camera resolution | 3264x2448 pixels | 3872x2592 pixels |
Video recording (secondary) | Full HD (1920x1080) | 4K UHD (3840x2160) |
Front flash | Not supported | Not supported |
Focal aperture | f/2.0 (aperture) | f/2.4 (aperture) |
Focal length | 24mm lens | 26mm lens |
Sensor size | 1/4" inches | 1/3" inches |
Pixel size | 1.12µm pixel | 1.22µm pixel |
🔉 Sound and multimedia | ||
Asus Zenfone 5Z (ZS621KL 256GB) | Galaxy Z Flip 4 (SM-F721B 128GB) | |
Loudspeaker | Supported | Stereo sound 32-bit/384kHz Dolby Atmos Tuned by AKG |
Active noise cancellation | 2 microphones or more | 2 microphones or more |
Radio | FM | Not supported |
TV | Not supported | Not supported |
Video formats | MP4, H.265, H.264, H.263 | MP4, H.265, H.264, H.263, XviD, MKV |
Audio formats | MP3, OGG, eAAC+, FLAC | MP3, WAV, WMA, eAAC+, FLAC |
🔌 Connectivity | ||
Asus Zenfone 5Z (ZS621KL 256GB) | Galaxy Z Flip 4 (SM-F721B 128GB) | |
USB | USB 2.0 Type-C, USB OTG On-The-Go | USB 2.0 Type-C, USB OTG On-The-Go |
Audio output | 3.5mm jack | Type-C reversible connector |
TV output | Not supported | USB Type-C (reversible) |
Bluetooth | 5.0 + A2DP/LE | 5.2 + A2DP/LE |
WiFi | 802.11 a/b/g/n/ac [wifi5] (2.4GHz, 5GHz) WiFi Direct, hotspot | 802.11 a/b/g/n/ac/ax [wifi6] (2.4GHz, 5GHz) + MIMO WiFi Direct, hotspot |
DLNA | Not supported | Supported |
GPS | A-GPS, GeoTagging, GLONASS, BeiDou | A-GPS, GeoTagging, GLONASS, GALILEO, BeiDou |
NFC | Supported | Supported |
Infrared port | Not supported | Not supported |
🧭 Sensors | ||
Asus Zenfone 5Z (ZS621KL 256GB) | Galaxy Z Flip 4 (SM-F721B 128GB) | |
Sensors | Accelerometer Ambient light sensor Compass Face unlock Fingerprint sensor (rear-mounted) Gyroscope Proximity sensor | Accelerometer Ambient light sensor Barometer Compass Face unlock Fingerprint sensor (side-mounted) Gyroscope Hall effect Proximity sensor |
Vibrating alert | Supported | Supported |
🔋 Battery | ||
Asus Zenfone 5Z (ZS621KL 256GB) | Galaxy Z Flip 4 (SM-F721B 128GB) | |
Battery type | Li-Ion: lithium-ion (Non removable) | LiPo: li-ion polymer (Non removable) |
Battery capacity | 3300 mAh | 3700 mAh |
Charger, watts | 18W (9V/2A) Wired fast charging | 25W Wired fast charging Reverse charging by cable USB Power Delivery 3.0 |
Inductive / wireless charging | Not supported | 15W Qi Wireless charging (Qi/WPC) 4.5W Reverse wireless charging |
Talk time autonomy | 25 hours (1 days) | 34 hours (1.4 days) |
Standby | feature not registered | feature not registered |
➕ Other features | ||
Asus Zenfone 5Z (ZS621KL 256GB) | Galaxy Z Flip 4 (SM-F721B 128GB) | |
Call control | Voice dialing, Voice recorder | Voice dialing, Voice recorder, Voice commands |
Messaging | SMS (T9), MMS, E-mail, Push mail | SMS (T9), MMS, E-mail, Push mail |
Hands-free calling | Supported | Supported |
Video calling | Supported | Supported |
Ringtones | Polyphonic and customized | Polyphonic and customized |
Web browser | HTML, XHTML, HTML5 | HTML, XHTML, HTML5 |
Antenna | Internal antenna | Internal antenna |
Qwerty physical keyboard | Not supported | Not supported |
Miscellaneous | • Colors: Midnight Blue, Meteor Silver • 2.5D curved glass screen • 95% DCI-P3 coverage • Supports glove touch • ASUS ZenUI 5.0 • 24-bit/192kHz audio • DTS sound (only headphones) | • Colors: Graphite, White, Bora Purple, Pink Gold, Blue, Yellow, Navy, Khaki, Red • Samsung Pay (Visa, MasterCard) |
☢️ Radiation rate | ||
Asus Zenfone 5Z (ZS621KL 256GB) | Galaxy Z Flip 4 (SM-F721B 128GB) | |
SAR 1.6W/kg (USA, Mexico, etc.) | 1.04W/kg (head), 0.37W/kg (body) | 1.01W/kg (head), 1.01W/kg (body) |
SAR 2W/kg (Europe, UK, etc.) | 1.2W/kg (head), 1.477W/kg (body) | 1.151W/kg (head), 1.198W/kg (body) |