Asus Zenfone 3 Ultra (ZU680KL 32GB) vs Asus Zenfone 8 (128GB/8GB)
Side by side comparison between Asus Zenfone 3 Ultra vs Asus Zenfone 8 phones, differences, pros, cons and full specifications. What's the better?
,
6.8"
IPS+
IPS+
1080x1920
23
MP
MP
8mp
3GB
RAM
RAM
Octa-core
4600
mAh
mAh
(Non removable)
vs
5.9"
AMOLED
AMOLED
1080x2400
64
MP
MP
12mp
8GB
RAM
RAM
Octa-core
4000
mAh
mAh
(Non removable)
What's the better phone? Asus Zenfone 8 (128GB/8GB)
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 | 25 Common items in both devices |
| 16 million |
| Only digital zoom |
| LDAF/PDAF: laser/phase detection autofocus / PDAF: phase detection autofocus |
| OIS (4-axis): Optical stabilization |
| HDR photo on both cameras / HDR photo/video on both cameras |
| Capacitive |
| Multitouch |
| +18 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 3 Ultra (ZU680KL 32GB) | Asus Zenfone 8 (128GB/8GB) | |
| Model | Zenfone 3 Ultra (ZU680KL 32GB) | Zenfone 8 (128GB/8GB) |
| Other model names | Asus Zenfone 3 Ultra 3GB/32GB ZU680KL Dual-Sim, Asus Mercury | Asus Zenfone 8 (ZS590KS, ZS590KS-2A007EU) |
| Country or region available |  (Global, International) | (Global, International) |
| Brand | Asus | Asus |
| Release date | 8/1/2016 | 5/13/2021, Announced: 5/12/2021 |
| Depth | 6.8 millimeters (0.27 inches) | 8.9 millimeters (0.35 inches) |
| Size (width x height) | 93.9 x 186.4 millimeters (3.7 x 7.34 in) | 68.5 x 148 millimeters (2.7 x 5.83 in) |
| Weight | 233 grams (8.16 ounces) | 169 grams (5.92 ounces) |
| Build, materials | feature not registered | Aluminum frame, glass front/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 3 Ultra (ZU680KL 32GB) | Asus Zenfone 8 (128GB/8GB) | |
| Display type | TFT Super IPS+ | Super AMOLED |
| Screen size | 6.8" inches | 5.9" inches |
| Screen-to-body ratio | ~72.8% (screen-to-body ratio) | ~82.9% (screen-to-body ratio) |
| Display resolution | 1080x1920 pixels | 1080x2400 pixels (20:9) |
| Touchscreen | Capacitive Multitouch 10-points | Capacitive Multitouch 10-points |
| Pixel density (dot pitch) | 324 PPI | 446 PPI |
| Colors | 16 million | 16 million |
| Scratch-resistant glass | Gorilla Glass 4 | Gorilla Glass Victus |
| Refresh rate | feature not registered | 120Hz |
| Display features | feature not registered | 700nits[typ], 1100nits[peak] HDR10+ Always-On Display |
🤖 Operating System | ||
| Asus Zenfone 3 Ultra (ZU680KL 32GB) | Asus Zenfone 8 (128GB/8GB) | |
| System version | Android 6.0.1 Marshmallow | Android 11 |
| Firmware update | Android 8.0 Oreo | Android 13 |
| User Interface | feature not registered | ZenUI 8 / 9 / 10 |
⚙️ Processor | ||
| Asus Zenfone 3 Ultra (ZU680KL 32GB) | Asus Zenfone 8 (128GB/8GB) | |
| Chipset | 64bit: Qualcomm Snapdragon 652 MSM8976 (28nm) | 64bit: Qualcomm Snapdragon 888 (SM8350) (5nm) |
| CPU | Octa-core, 2 processors: 4x 1.8GHz ARM Cortex-A72 (Quad-core) 4x 1.4GHz ARM Cortex-A53 (Quad-core) | Octa-core, 3 processors: 1x 2.84GHz Kryo 680 (Single-core) 3x 2.42GHz Kryo 680 (Triple-core) 4x 1.8GHz Kryo 680 (Quad-core) |
| GPU graphical controller | Qualcomm Adreno 510 600Mhz | Qualcomm Adreno 660 (840MHz) |
| Performance (benchmark) | feature not registered | AnTuTu: 676001 (v8), 799738 (v9) Geekbench: 3604 (v5.1) GFXBench: 61fps (ES 3.1 onscreen) |
💽 Memory and storage | ||
| Asus Zenfone 3 Ultra (ZU680KL 32GB) | Asus Zenfone 8 (128GB/8GB) | |
| RAM memory | 3GB LPDDR4 | 8GB LPDDR5 |
| Internal storage | 32GB (24GB available) | 128GB (107GB available) UFS 3.1 |
| External storage | Until 256GB microSD, microSDXC (hybrid slot/shares the same SIM-2 slot) | Not supported |
📶 Mobile networks | ||
| Asus Zenfone 3 Ultra (ZU680KL 32GB) | Asus Zenfone 8 (128GB/8GB) | |
| 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) micro-SIM (3FF) and nano-SIM (4FF) | 2 slots (Dual-SIM) nano-SIM (4FF) |
| Maximum Download / Upload | 300/50 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 | Global version: UMTS 800/850/900/1900/2100 China version: CDMA2000, TD-SCDMA 1900/2000 UMTS 800/850/900/1900/2100 | UMTS 800/850/900/1700/1900/2100 |
| Primary 4G network | LTE Cat6 Global version: LTE (Bands 1,3,5,7,8,18,19,20,26,28) TD-LTE (Bands 38,40,41) China version: LTE (Bands 1,3,5,7,8,18,19,20,26,28) TD-LTE (Bands 38,39,40,41) | LTE Cat20 VoLTE America version: LTE (1, 2, 3, 4, 5, 7, 8, 12, 17, 18, 19, 20, 25, 26, 30, 66, 71) TD-LTE (34, 38, 39, 40, 41, 42) Global version: LTE (1, 2, 3, 4, 5, 7, 8, 12, 17, 18, 19, 20, 26, 28) TD-LTE (34, 38, 39, 40, 41, 42) |
| Primary 5G network | Not supported | America version: SA/NSA (1, 2, 3, 5, 7, 8, 12, 20, 25, 38, 40, 66, 71, 77, 78) Global version: SA/NSA (1, 2, 3, 5, 7, 8, 12, 20, 28, 38, 77, 78) |
| Primary data network | GPRS, EDGE, CDMA2000 EV-DO Rev A, TD-SCDMA, 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 800/850/900/1700/1900/2100 |
| Secondary 4G network | Not supported | LTE Cat20 VoLTE America version: LTE (1, 2, 3, 4, 5, 7, 8, 12, 17, 18, 19, 20, 25, 26, 30, 66, 71) TD-LTE (34, 38, 39, 40, 41, 42) Global version: LTE (1, 2, 3, 4, 5, 7, 8, 12, 17, 18, 19, 20, 26, 28) TD-LTE (34, 38, 39, 40, 41, 42) |
| Secondary data network | GPRS, EDGE | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A |
📷 Camera | ||
| Asus Zenfone 3 Ultra (ZU680KL 32GB) | Asus Zenfone 8 (128GB/8GB) | |
| Back camera (main camera) | 23 megapixels | (dual camera) 64 megapixels 12MP ultrawide f/2.2112°14mm1/2.55"1.4µmPDAF |
| Main camera resolution | 5520x4140 pixels | 10120x6328 pixels |
| Video recording (primary) | 4K UHD (3840x2160) 24 fps | 8K UHD (7680x4320) 24 fps |
| Flash | Dual-LED flash | LED flash |
| Focal aperture | f/2.0 (aperture) | f/1.8 (aperture) |
| Focal length | feature not registered | 26mm (lens) |
| Sensor size | 1/2.6" inches | 1/1.73" inches |
| Pixel size | 1.12µm pixel | 0.8µm pixel |
| Autofocus | LDAF/PDAF: laser/phase detection autofocus | PDAF: phase detection autofocus |
| Touch focus | Supported | Supported |
| Image stabilization | OIS (4-axis): Optical stabilization | OIS (4-axis): 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@120fps 1080p@240fps 720p@480fps |
📸 Front camera | ||
| Asus Zenfone 3 Ultra (ZU680KL 32GB) | Asus Zenfone 8 (128GB/8GB) | |
| Front camera (secondary) | 8 megapixels | 12 megapixels |
| Front camera resolution | 3264x2448 pixels | 4000x3000 pixels |
| Video recording (secondary) | Full HD (1920x1080) | 4K UHD (3840x2160) |
| Front flash | Not supported | Not supported |
| Focal aperture | f/2.0 (aperture) | f/2.5 (aperture) |
| Focal length | feature not registered | 28mm (lens) |
| Sensor size | feature not registered | 1/2.93" inches |
| Pixel size | feature not registered | 1.22µm pixel |
🔉 Sound and multimedia | ||
| Asus Zenfone 3 Ultra (ZU680KL 32GB) | Asus Zenfone 8 (128GB/8GB) | |
| Loudspeaker | Supported | Stereo sound 32-bit/384kHz |
| Active noise cancellation | 2 microphones or more | 2 microphones or more |
| Radio | FM (RDS) | FM |
| TV | Not supported | Not supported |
| Video formats | MP4, H.264, H.263 | MP4, H.265, H.264, H.263, XviD, MKV |
| Audio formats | MP3, WAV, eAAC+, FLAC | MP3, WAV, WMA, eAAC+, FLAC |
🔌 Connectivity | ||
| Asus Zenfone 3 Ultra (ZU680KL 32GB) | Asus Zenfone 8 (128GB/8GB) | |
| USB | USB 2.0 Type-C reversible connector | USB 2.0 Type-C, USB OTG On-The-Go |
| Audio output | 3.5mm jack | 3.5mm jack |
| TV output | USB Type-C SlimPort® | USB Type-C (reversible) |
| Bluetooth | 4.2 + A2DP | 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 [wifi6E/6] (2.4GHz, 5GHz, 6GHz) + MIMO WiFi Direct, hotspot |
| DLNA | Not supported | Not supported |
| GPS | A-GPS, GeoTagging, GLONASS, BeiDou | A-GPS, GeoTagging, GLONASS, GALILEO, BeiDou, QZSS, NavIC |
| NFC | Not supported | Supported |
| Infrared port | Supported | Not supported |
🧭 Sensors | ||
| Asus Zenfone 3 Ultra (ZU680KL 32GB) | Asus Zenfone 8 (128GB/8GB) | |
| Sensors | Accelerometer Ambient light sensor Compass Fingerprint sensor Gyroscope Hall effect Proximity sensor | Accelerometer Ambient light sensor Compass Face unlock 2D Fingerprint sensor (under display) Gyroscope Hall effect Proximity sensor |
| Vibrating alert | Supported | Supported |
🔋 Battery | ||
| Asus Zenfone 3 Ultra (ZU680KL 32GB) | Asus Zenfone 8 (128GB/8GB) | |
| Battery type | Li-Ion: lithium-ion (Non removable) | LiPo: li-ion polymer (Non removable) |
| Battery capacity | 4600 mAh | 4000 mAh |
| Charger, watts | 18W (9V/2A) Wired fast charging | 30W Wired fast charging 5W Reverse charging by cable Quick Charge 4 USB Power Delivery 3.0 |
| Inductive / wireless charging | feature not registered | Not supported |
| Talk time autonomy | 34 hours (1.4 days) | feature not registered |
| Standby | feature not registered | feature not registered |
➕ Other features | ||
| Asus Zenfone 3 Ultra (ZU680KL 32GB) | Asus Zenfone 8 (128GB/8GB) | |
| 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: Titanium Gray, Glacier Silver, Rose Gold • USB OTG On-The-Go • Asus ZenUI 3.0 • Sony IMX318 sensor camera • DTS headphone • Hi-Res audio 192kHz/24bit • Quick Charge 3.0 • Fast charging battery: 60% in 45min • Miracast | • Colors: Obsidian Black, Horizon Silver |
☢️ Radiation rate | ||
| Asus Zenfone 3 Ultra (ZU680KL 32GB) | Asus Zenfone 8 (128GB/8GB) | |
| SAR 1.6W/kg (USA, Mexico, etc.) | feature not registered | feature not registered |
| SAR 2W/kg (Europe, UK, etc.) | feature not registered | feature not registered |