Asus Zenfone 5 (ZE620KL 64GB/4GB) vs Samsung Galaxy S21 FE (SM-G9900 128GB)
Side by side comparison between Asus Zenfone 5 (ZE620KL) vs Samsung Galaxy S21 FE phones, differences, pros, cons and full specifications. What's the better?
,
6.2"
IPS
IPS
1080x2246
12
MP
MP
8mp
4GB
RAM
RAM
Octa-core
3300
mAh
mAh
(Non removable)
vs
6.4"
AMOLED
AMOLED
1080x2400
12.2
MP
MP
32mp
8GB
RAM
RAM
Octa-core
4500
mAh
mAh
(Non removable)
What's the better phone? Samsung Galaxy S21 FE (SM-G9900 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!
5 Advantages 
23 Advantages | 28 Common items in both devices |
| 7.9 millimeters (0.31 inches) |
| Aluminum frame, glass front/back / Aluminum body, glass front, plastic back |
| 16 million |
| 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) |
| +21 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 5 (ZE620KL 64GB/4GB) | Galaxy S21 FE (SM-G9900 128GB) | |
| Model | Zenfone 5 (ZE620KL 64GB/4GB) | Galaxy S21 FE (SM-G9900 128GB) |
| Other model names | Asus Zenfone 5 ZE620KL (4GB RAM), ASUS_X00QD | Galaxy S21 FE 5G SM-G9900 Dual-SIM (Exynos) |
| Country or region available |  (Global, International) |  China |
| Brand | Asus | Samsung |
| Release date | 5/1/2018 | 1/7/2022, Announced: 1/4/2022 |
| Depth | 7.9 millimeters (0.31 inches) | 7.9 millimeters (0.31 inches) |
| Size (width x height) | 75.65 x 153 millimeters (2.98 x 6.02 in) | 74.5 x 155.7 millimeters (2.93 x 6.13 in) |
| Weight | 165 grams (5.78 ounces) | 177 grams (6.2 ounces) |
| Build, materials | Aluminum frame, glass front/back | Aluminum body, glass front, plastic back |
| Protection against water and others | Not supported | IP68 certified: water-resistant up to 1.5 meters for 30min and dust-resistant |
📲 Display | ||
| Asus Zenfone 5 (ZE620KL 64GB/4GB) | Galaxy S21 FE (SM-G9900 128GB) | |
| Display type | TFT IPS LCD | Dynamic AMOLED |
| Screen size | 6.2" inches | 6.4" inches |
| Screen-to-body ratio | ~83.7% (screen-to-body ratio) | ~85.3% (screen-to-body ratio) |
| Display resolution | 1080x2246 pixels | 1080x2400 pixels (20:9) |
| Touchscreen | Capacitive Multitouch 10-points | Capacitive Multitouch 10-points |
| Pixel density (dot pitch) | 402 PPI | 411 PPI |
| Colors | 16 million | 16 million |
| Scratch-resistant glass | Gorilla Glass | Gorilla Glass Victus |
| Refresh rate | feature not registered | 120Hz |
| Display features | feature not registered | 1300nits[peak] HDR10+ Always-On Display |
🤖 Operating System | ||
| Asus Zenfone 5 (ZE620KL 64GB/4GB) | Galaxy S21 FE (SM-G9900 128GB) | |
| System version | Android 8.0 Oreo | Android 12 |
| Firmware update | Android 9.0 Pie | Android 15 |
| User Interface | feature not registered | One UI 4.1 / 5.1 / 6.0 / 7.0 |
⚙️ Processor | ||
| Asus Zenfone 5 (ZE620KL 64GB/4GB) | Galaxy S21 FE (SM-G9900 128GB) | |
| Chipset | 64bit: Qualcomm Snapdragon 636 SDM636 (14nm) | 64bit: Samsung Exynos 2100 (5nm) |
| CPU | Octa-core, 2 processors: 4x 1.8GHz Kryo 260 Gold (Quad-core) 4x 1.6GHz Kryo 260 Silver (Quad-core) | Octa-core, 3 processors: 1x 2.9GHz ARM Cortex-X1 (Single-core) 3x 2.8GHz ARM Cortex-A78 (Triple-core) 4x 2.2GHz ARM Cortex-A55 (Quad-core) |
| GPU graphical controller | Qualcomm Adreno 509 | ARM Mali-G78 MP14 (854MHz) |
| Performance (benchmark) | feature not registered | feature not registered |
💽 Memory and storage | ||
| Asus Zenfone 5 (ZE620KL 64GB/4GB) | Galaxy S21 FE (SM-G9900 128GB) | |
| RAM memory | 4GB LPDDR4X | 8GB LPDDR5 |
| Internal storage | 64GB (51GB available) eMMC 5.1 | 128GB (97GB available) UFS 3.1 |
| External storage | Until 1TB microSD, microSDXC (hybrid slot/shares the same SIM-2 slot) | Not supported |
📶 Mobile networks | ||
| Asus Zenfone 5 (ZE620KL 64GB/4GB) | Galaxy S21 FE (SM-G9900 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) | 2 slots (Dual-SIM) nano-SIM (4FF) |
| Maximum Download / Upload | 600/100 Mbps | 2000/1024 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 | CDMA 800, GSM 850/900/1800/1900 |
| Primary 3G network | A version: UMTS 800/850/900/1800/1900/2100 B version (USA): UMTS 800/850/900/1800/1900/2100 C version: UMTS 850/900/2100 | CDMA2000 1xEV-DO UMTS 850/900/1900/2100 |
| Primary 4G network | LTE Cat6/Cat12 A version: LTE Cat6 300Mpbs (Bands 1,2,3,5,7,8,18,19,20,26,28,32) TD-LTE (Bands 34,38,39,40,41) B version (USA): LTE Cat12 (Bands 1,2,3,5,7,8,18,19,28) TD-LTE (Bands 38,39,41) C version: LTE Cat12 (Bands 1,3,5,7,8,20) TD-LTE (Band 40) | LTE Cat20 (1, 3, 3, 4, 5, 7, 8, 12, 20, 28) TD-LTE (34, 38, 39, 40, 41) VoLTE |
| Primary 5G network | Not supported | SA/NSA/Sub6 (1, 3, 5, 8, 28, 41, 78, 79) |
| Primary data network | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A | GPRS, EDGE, CDMA2000 EV-DO Rev 0, CDMA2000 EV-DO Rev A, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A, SA/NSA |
| Secondary 2G network | GSM 850/900/1800/1900 | GSM 850/900/1800/1900 |
| Secondary 3G network | Not supported | UMTS 850/900/1900/2100 |
| Secondary 4G network | Not supported | LTE Cat20 (1, 3, 3, 4, 5, 7, 8, 12, 20, 28) TD-LTE (34, 38, 39, 40, 41) VoLTE |
| Secondary data network | GPRS, EDGE | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A, SA/NSA |
📷 Camera | ||
| Asus Zenfone 5 (ZE620KL 64GB/4GB) | Galaxy S21 FE (SM-G9900 128GB) | |
| Back camera (main camera) | (dual camera) 12 megapixels 8MP f/2.012mm1/4" | (triple camera) 12.2 megapixels 12MP ultrawide f/2.2123°13mm1/3"1.12µm 8MP telephoto f/2.476mm1/4.5"1.0µmPDAFOIS3x-optical-zoom |
| 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) | 26mm (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 | Digital and optical 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@30/60fps 1080p@240fps (slow motion) 720p@960fps (slow motion) |
📸 Front camera | ||
| Asus Zenfone 5 (ZE620KL 64GB/4GB) | Galaxy S21 FE (SM-G9900 128GB) | |
| Front camera (secondary) | 8 megapixels | 32 megapixels |
| Front camera resolution | 3264x2448 pixels | 6528x4896 pixels |
| Video recording (secondary) | Full HD (1920x1080) | 4K UHD (3840x2160) |
| Front flash | Not supported | Not supported |
| Focal aperture | f/2.0 (aperture) | f/2.2 (aperture) |
| Focal length | 24mm (lens) | 26mm (lens) |
| Sensor size | 1/4" inches | 1/2.74" inches |
| Pixel size | 1.12µm pixel | 0.8µm pixel |
🔉 Sound and multimedia | ||
| Asus Zenfone 5 (ZE620KL 64GB/4GB) | Galaxy S21 FE (SM-G9900 128GB) | |
| Loudspeaker | Supported | Stereo sound 32-bit/384kHz Dolby Atmos Tuned by AKG |
| Active noise cancellation | 2 microphones or more | 2 microphones |
| 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 5 (ZE620KL 64GB/4GB) | Galaxy S21 FE (SM-G9900 128GB) | |
| USB | USB 2.0 Type-C reversible connector | USB 3.2 Type-C, USB OTG On-The-Go |
| Audio output | 3.5mm jack | Type-C reversible connector |
| TV output | Not supported | USB Type-C SlimPort® |
| Bluetooth | 5.0 + A2DP/LE | 5.0 + 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 5 (ZE620KL 64GB/4GB) | Galaxy S21 FE (SM-G9900 128GB) | |
| Sensors | Accelerometer Ambient light sensor Compass Face unlock 2D Fingerprint sensor (rear-mounted) Gyroscope Proximity sensor | Accelerometer Ambient light sensor Barometer Compass Face unlock 2D Fingerprint sensor (under display) Gyroscope Hall effect Proximity sensor |
| Vibrating alert | Supported | Supported |
🔋 Battery | ||
| Asus Zenfone 5 (ZE620KL 64GB/4GB) | Galaxy S21 FE (SM-G9900 128GB) | |
| Battery type | Li-Ion: lithium-ion (Non removable) | LiPo: li-ion polymer (Non removable) |
| Battery capacity | 3300 mAh | 4500 mAh |
| Charger, watts | Wired charging | 25W Wired fast charging Reverse charging by cable USB Power Delivery 3.0 |
| Inductive / wireless charging | feature not registered | 15W Qi wireless charging 4.5W Reverse wireless charging |
| Talk time autonomy | 25 hours (1 days) | feature not registered |
| Standby | feature not registered | feature not registered |
➕ Other features | ||
| Asus Zenfone 5 (ZE620KL 64GB/4GB) | Galaxy S21 FE (SM-G9900 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 • Face recognition • ASUS ZenUI 5.0 • 24-bit/192kHz audio • DTS sound (only headphones) • Fast battery charging 5V/2A=10W | • Colors: Graphite, White, Lavender, Olive |
☢️ Radiation rate | ||
| Asus Zenfone 5 (ZE620KL 64GB/4GB) | Galaxy S21 FE (SM-G9900 128GB) | |
| SAR 1.6W/kg (USA, Mexico, etc.) | 1.04W/kg (head), 0.37W/kg (body) | feature not registered |
| SAR 2W/kg (Europe, UK, etc.) | 1.2W/kg (head), 1.477W/kg (body) | 0.674W/kg (head), 1.501W/kg (body) |