Asus Zenfone 6 (ZS630KL 64GB) vs Samsung Galaxy S21 FE (SM-G990B/DS 128GB)
Side by side comparison between Asus Zenfone 6 vs Samsung Galaxy S21 FE phones, differences, pros, cons and full specifications. What's the better?
,
6.4"
IPS
IPS
1080x2340
48
MP
MP
48mp
6GB
RAM
RAM
Octa-core
5000
mAh
mAh
(Non removable)
vs
6.4"
AMOLED
AMOLED
1080x2400
12.2
MP
MP
32mp
6GB
RAM
RAM
Octa-core
4500
mAh
mAh
(Non removable)
What's the better phone? Samsung Galaxy S21 FE (SM-G990B/DS 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!
7 Advantages 
23 Advantages | 24 Common items in both devices |
| Aluminum frame, glass front/back / Aluminum body, glass front, plastic back |
| 16 million |
| 6.4" |
| LDAF/PDAF: laser/phase detection autofocus / PDAF: phase detection autofocus |
| HDR photo on both cameras / HDR photo/video on both cameras |
| f/1.8 (aperture) |
| 4K UHD (3840x2160) |
| +17 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 6 (ZS630KL 64GB) | Galaxy S21 FE (SM-G990B/DS 128GB) | |
| Model | Zenfone 6 (ZS630KL 64GB) | Galaxy S21 FE (SM-G990B/DS 128GB) |
| Other model names | Asus Zenfone 6 2019 (6GB RAM) ASUS_I01WD, ZS630KL, I01WD | Galaxy S21 FE 5G SM-G990B/Dual-SIM (Exynos) |
| Country or region available |  (Global, International) | (Global, International) |
| Brand | Asus | Samsung |
| Release date | 5/16/2019 | 1/7/2022, Announced: 1/4/2022 |
| Depth | 9.2 millimeters (0.36 inches) | 7.9 millimeters (0.31 inches) |
| Size (width x height) | 75.4 x 159.1 millimeters (2.97 x 6.26 in) | 74.5 x 155.7 millimeters (2.93 x 6.13 in) |
| Weight | 190 grams (6.65 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 6 (ZS630KL 64GB) | Galaxy S21 FE (SM-G990B/DS 128GB) | |
| Display type | TFT IPS LCD | Dynamic AMOLED |
| Screen size | 6.4" inches | 6.4" inches |
| Screen-to-body ratio | ~83.8% (screen-to-body ratio) | ~85.3% (screen-to-body ratio) |
| Display resolution | 1080x2340 pixels (19.5:9) | 1080x2400 pixels (20:9) |
| Touchscreen | Capacitive Multitouch 10-points | Capacitive Multitouch 10-points |
| Pixel density (dot pitch) | 403 PPI | 411 PPI |
| Colors | 16 million | 16 million |
| Scratch-resistant glass | Gorilla Glass 6 | Gorilla Glass Victus |
| Refresh rate | 60Hz | 120Hz |
| Display features | 600nits[peak] HDR10 | 1300nits[peak] HDR10+ Always-On Display |
🤖 Operating System | ||
| Asus Zenfone 6 (ZS630KL 64GB) | Galaxy S21 FE (SM-G990B/DS 128GB) | |
| System version | Android 9.0 Pie | Android 12 |
| Firmware update | feature not registered | Android 14 |
| User Interface | feature not registered | One UI 4.1 / 5.1 / 6.0 |
⚙️ Processor | ||
| Asus Zenfone 6 (ZS630KL 64GB) | Galaxy S21 FE (SM-G990B/DS 128GB) | |
| Chipset | 64bit: Qualcomm Snapdragon 855 (SM8150) (7nm) | 64bit: Samsung Exynos 2100 (5nm) |
| CPU | Octa-core, 3 processors: 1x 2.84GHz Kryo 485 (Single-core) 3x 2.42GHz Kryo 485 (Triple-core) 4x 1.78GHz Kryo 485 (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 640 (585MHz) | ARM Mali-G78 MP14 (854MHz) |
| Performance (benchmark) | feature not registered | feature not registered |
💽 Memory and storage | ||
| Asus Zenfone 6 (ZS630KL 64GB) | Galaxy S21 FE (SM-G990B/DS 128GB) | |
| RAM memory | 6GB LPDDR4X | 6GB LPDDR5 |
| Internal storage | 64GB (50GB available) UFS 2.1 | 128GB (97GB available) UFS 3.1 |
| External storage | Until 1TB microSD, microSDXC (dedicated slot) | Not supported |
📶 Mobile networks | ||
| Asus Zenfone 6 (ZS630KL 64GB) | Galaxy S21 FE (SM-G990B/DS 128GB) | |
| Dual-SIM | Dual-SIM Standby - Call active on one sim card (dedicated 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 | 1200/150 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 | GSM 850/900/1800/1900 |
| Primary 3G network | A version: UMTS 850/900/1900/2100 B, C version: UMTS 800/850/900/1700/1900/2100 | UMTS 850/900/1700/1900/2100 |
| Primary 4G network | LTE Cat18 VoLTE A version: LTE (Bands 1, 2, 3, 5, 7, 8, 20, 28) TD-LTE (Bands 38, 40, 41) B version: LTE (Bands 1, 2, 3, 4, 5, 7, 8, 18, 19, 26, 28) TD-LTE (Bands 38, 39, 41, 46) C version: LTE (Bands 1, 2, 3, 4, 5, 7, 8, 12, 17, 18, 19, 26, 28) TD-LTE (Bands 38, 39, 41, 46) | 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, 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 850/900/1700/1900/2100 |
| 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 6 (ZS630KL 64GB) | Galaxy S21 FE (SM-G990B/DS 128GB) | |
| Back camera (main camera) | (dual camera) 48 megapixels 13MP ultrawide f/2.411mm | (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 | 8000x6000 pixels | 4032x3024 pixels |
| Video recording (primary) | 4K UHD (3840x2160) 60 fps | 4K UHD (3840x2160) 60 fps |
| Flash | Dual-LED flash | LED flash |
| Focal aperture | f/1.8 (aperture) | f/1.8 (aperture) |
| Focal length | 26mm lens | 26mm lens |
| Sensor size | 1/2" inches | 1/1.76" inches |
| Pixel size | 0.8µm pixel | 1.8µm pixel |
| Autofocus | LDAF/PDAF: laser/phase detection autofocus | PDAF: phase detection autofocus |
| Touch focus | Supported | Supported |
| Image stabilization | EIS: Digital 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 6 (ZS630KL 64GB) | Galaxy S21 FE (SM-G990B/DS 128GB) | |
| Front camera (secondary) | Uses the back motorized camera (flip-up/rotating) | 32 megapixels |
| Front camera resolution | 8000x6000 pixels | 6528x4896 pixels |
| Video recording (secondary) | 4K UHD (3840x2160) | 4K UHD (3840x2160) |
| Front flash | Dual-LED flash | Not supported |
| Focal aperture | f/1.8 (aperture) | f/2.2 (aperture) |
| Focal length | 26mm lens | 26mm lens |
| Sensor size | 1/2" inches | 1/2.74" inches |
| Pixel size | 0.8µm pixel | 0.8µm pixel |
🔉 Sound and multimedia | ||
| Asus Zenfone 6 (ZS630KL 64GB) | Galaxy S21 FE (SM-G990B/DS 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, XviD, MKV | MP4, H.265, H.264, H.263, XviD, MKV |
| Audio formats | MP3, WAV, WMA, eAAC+, FLAC | MP3, WAV, WMA, eAAC+, FLAC |
🔌 Connectivity | ||
| Asus Zenfone 6 (ZS630KL 64GB) | Galaxy S21 FE (SM-G990B/DS 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) + MIMO 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, GALILEO, BeiDou, QZSS | A-GPS, GeoTagging, GLONASS, GALILEO, BeiDou |
| NFC | Supported | Supported |
| Infrared port | Not supported | Not supported |
🧭 Sensors | ||
| Asus Zenfone 6 (ZS630KL 64GB) | Galaxy S21 FE (SM-G990B/DS 128GB) | |
| Sensors | Accelerometer Ambient light sensor Compass Face unlock Fingerprint sensor (rear-mounted) Gyroscope Hall effect Proximity sensor | Accelerometer Ambient light sensor Barometer Compass Face unlock Fingerprint sensor (under display) Gyroscope Hall effect Proximity sensor |
| Vibrating alert | Supported | Supported |
🔋 Battery | ||
| Asus Zenfone 6 (ZS630KL 64GB) | Galaxy S21 FE (SM-G990B/DS 128GB) | |
| Battery type | LiPo: li-ion polymer (Non removable) | LiPo: li-ion polymer (Non removable) |
| Battery capacity | 5000 mAh | 4500 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 | feature not registered | 15W Qi wireless charging 4.5W Reverse wireless charging |
| Talk time autonomy | 33 hours (1.4 days) | feature not registered |
| Standby | 624 hours (26 days) | feature not registered |
➕ Other features | ||
| Asus Zenfone 6 (ZS630KL 64GB) | Galaxy S21 FE (SM-G990B/DS 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 Black, Twilight Silver • 19.5:9, HDR10, DCI-P3 100% display • Quick Charge 4.0 • 24-bit/192kHz audio • DTS Headphone X • Motorized flip-up main/selfie camera • Google Pay | • Colors: Graphite, White, Lavender, Olive |
☢️ Radiation rate | ||
| Asus Zenfone 6 (ZS630KL 64GB) | Galaxy S21 FE (SM-G990B/DS 128GB) | |
| SAR 1.6W/kg (USA, Mexico, etc.) | feature not registered | 0.65W/kg (head), 0.61W/kg (body) |
| SAR 2W/kg (Europe, UK, etc.) | feature not registered | 0.952W/kg (head), 1.48W/kg (body) |