Asus Zenfone 5Z (ZS621KL 256GB) vs Asus ROG Phone 5 Ultimate
Side by side comparison between Asus Zenfone 5Z vs Asus ROG Phone 5 Ultimate 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
6.78"
AMOLED
AMOLED
1080x2448
64
MP
MP
24mp
18GB
RAM
RAM
Octa-core
6000
mAh
mAh
(Non removable)
What's the better phone? Asus ROG Phone 5 Ultimate
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!
6 Advantages 
23 Advantages | 22 Common items in both devices |
| Aluminum frame, glass front/back |
| Dual-LED flash |
| Only digital zoom |
| PDAF: phase detection autofocus |
| HDR photo on both cameras / HDR photo/video on both cameras |
| f/1.8 (aperture) |
| Capacitive |
| +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) | Asus ROG Phone 5 Ultimate | |
| Model | Zenfone 5Z (ZS621KL 256GB) | ROG Phone 5 Ultimate |
| Other model names | Asus Zenfone 5z 8GB RAM (ZS621KL), ASUS_Z01RD | ROG Phone 5 Ultimate ZS673KS-18G512G-WH2, 1B059EU, 1B063IN |
| Country or region available |  India |  (Global, International) |
| Brand | Asus | Asus |
| Release date | 6/1/2018 | 6/7/2021, Announced: 3/10/2021 |
| Depth | 7.9 millimeters (0.31 inches) | 9.9 millimeters (0.39 inches) |
| Size (width x height) | 75.65 x 153 millimeters (2.98 x 6.02 in) | 77 x 173 millimeters (3.03 x 6.81 in) |
| Weight | 165 grams (5.78 ounces) | 239 grams (8.37 ounces) |
| Build, materials | Aluminum frame, glass front/back | Aluminum frame, glass front/back |
| Protection against water and others | Not supported | Not supported |
📲 Display | ||
| Asus Zenfone 5Z (ZS621KL 256GB) | Asus ROG Phone 5 Ultimate | |
| Display type | TFT IPS LCD | AMOLED |
| Screen size | 6.2" inches | 6.78" inches |
| Screen-to-body ratio | ~83.7% (screen-to-body ratio) | ~82.2% (screen-to-body ratio) |
| Display resolution | 1080x2246 pixels (18.7:9) | 1080x2448 pixels |
| Touchscreen | Capacitive Multitouch 10-points | Capacitive Multitouch 10-points |
| Pixel density (dot pitch) | 402 PPI | 395 PPI |
| Colors | 16 million | 1 billion |
| Scratch-resistant glass | Gorilla Glass | Gorilla Glass Victus |
| Refresh rate | 60Hz | 144Hz |
| Display features | 550nits[typ] | 800nits[typ] HDR10+ |
🤖 Operating System | ||
| Asus Zenfone 5Z (ZS621KL 256GB) | Asus ROG Phone 5 Ultimate | |
| System version | Android 8.0 Oreo | Android 11 |
| Firmware update | Android 10 | Android 12 |
| User Interface | feature not registered | ROG UI |
⚙️ Processor | ||
| Asus Zenfone 5Z (ZS621KL 256GB) | Asus ROG Phone 5 Ultimate | |
| Chipset | 64bit: Qualcomm Snapdragon 845 MSM8998 (10nm) | 64bit: Qualcomm Snapdragon 888 (SM8350) (5nm) |
| 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 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 630 710Mhz | Qualcomm Adreno 660 (840MHz) |
| Performance (benchmark) | feature not registered | feature not registered |
💽 Memory and storage | ||
| Asus Zenfone 5Z (ZS621KL 256GB) | Asus ROG Phone 5 Ultimate | |
| RAM memory | 8GB LPDDR4X | 18GB LPDDR5 |
| Internal storage | 256GB (240GB available) UFS 2.1 | 512GB (475GB 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) | Asus ROG Phone 5 Ultimate | |
| 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 | 800/100 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 | GSM 850/900/1800/1900 |
| Primary 3G network | UMTS 800/850/900 | UMTS 800/850/900/1700/1900/2100 |
| 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, 29, 30, 32, 66, 71) TD-LTE (34, 38, 39, 40, 41, 42, 48) VoLTE |
| Primary 5G network | Not supported | SA/NSA (1, 2, 3, 5, 7, 8, 12, 20, 25, 28, 38, 40, 41, 66, 71, 77, 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 800/850/900/1700/1900/2100 |
| Secondary 4G network | Not supported | LTE Cat20 (1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 29, 30, 32, 66, 71) TD-LTE (34, 38, 39, 40, 41, 42, 48) VoLTE |
| Secondary data network | GPRS, EDGE | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A |
📷 Camera | ||
| Asus Zenfone 5Z (ZS621KL 256GB) | Asus ROG Phone 5 Ultimate | |
| Back camera (main camera) | (dual camera) 12 megapixels 8MP ultrawide f/2.012mm1/4"1.12µmFF | (triple camera) 64 megapixels 13MP ultrawide f/2.411mm125° 5MP macro f/2.0 |
| Main camera resolution | 4000x3000 pixels | 10120x6328 pixels |
| Video recording (primary) | 4K UHD (3840x2160) 30 fps | 8K UHD (7680x4320) 30 fps |
| Flash | Dual-LED flash | Dual-LED flash |
| Focal aperture | f/1.8 (aperture) | f/1.8 (aperture) |
| Focal length | 24mm lens | 26mm lens |
| Sensor size | 1/2.55" inches | 1/1.73" inches |
| Pixel size | 1.4µm pixel | 0.8µm pixel |
| Autofocus | PDAF: phase detection autofocus | PDAF: phase detection autofocus |
| Touch focus | Supported | Supported |
| Image stabilization | OIS (4-axis): Optical stabilization | EIS: Digital 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@30/60/120fps 1080p@30/60/120/240fps 720p@480fps Sony IMX686 sensor |
📸 Front camera | ||
| Asus Zenfone 5Z (ZS621KL 256GB) | Asus ROG Phone 5 Ultimate | |
| Front camera (secondary) | 8 megapixels | 24 megapixels |
| Front camera resolution | 3264x2448 pixels | 5632x4224 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 | 24mm lens | 27mm lens |
| Sensor size | 1/4" inches | feature not registered |
| Pixel size | 1.12µm pixel | 0.9µm pixel |
🔉 Sound and multimedia | ||
| Asus Zenfone 5Z (ZS621KL 256GB) | Asus ROG Phone 5 Ultimate | |
| Loudspeaker | Supported | Stereo sound with dual speakers 24-bit/192kHz Dirac HD |
| 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) | Asus ROG Phone 5 Ultimate | |
| USB | USB 2.0 Type-C, USB OTG On-The-Go | USB 3.1 Type-C, USB OTG On-The-Go |
| Audio output | 3.5mm jack | 3.5mm jack |
| 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 [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 | Supported | Supported |
| Infrared port | Not supported | Not supported |
🧭 Sensors | ||
| Asus Zenfone 5Z (ZS621KL 256GB) | Asus ROG Phone 5 Ultimate | |
| Sensors | Accelerometer Ambient light sensor Compass Face unlock Fingerprint sensor (rear-mounted) Gyroscope Proximity sensor | Accelerometer Ambient light sensor Compass Face unlock Fingerprint sensor (under display) Gyroscope Proximity sensor |
| Vibrating alert | Supported | Supported |
🔋 Battery | ||
| Asus Zenfone 5Z (ZS621KL 256GB) | Asus ROG Phone 5 Ultimate | |
| Battery type | Li-Ion: lithium-ion (Non removable) | LiPo: li-ion polymer (Non removable) |
| Battery capacity | 3300 mAh | 6000 mAh |
| Charger, watts | 18W (9V/2A) Wired fast charging | 65W Wired fast charging 10W Reverse charging by cable Quick Charge 5 USB Power Delivery 3.0 |
| Inductive / wireless charging | Not supported | Not supported |
| Talk time autonomy | 25 hours (1 days) | feature not registered |
| Standby | feature not registered | feature not registered |
➕ Other features | ||
| Asus Zenfone 5Z (ZS621KL 256GB) | Asus ROG Phone 5 Ultimate | |
| 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: Storm White • AirTrigger 5: physical gaming triggers • Aero case • AeroActive Cooler 5 • LED display on the back with notifications and animations |
☢️ Radiation rate | ||
| Asus Zenfone 5Z (ZS621KL 256GB) | Asus ROG Phone 5 Ultimate | |
| 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) | feature not registered |