Realme 8i (64GB) vs Asus Zenfone 5Z (ZS621KL 256GB)
Side by side comparison between Realme 8i vs Asus Zenfone 5Z phones, differences, pros, cons and full specifications. What's the better?
,
6.6"
IPS
IPS
1080x2412
50
MP
MP
16mp
4GB
RAM
RAM
Octa-core
5000
mAh
mAh
(Non removable)
vs
6.2"
IPS
IPS
1080x2246
12
MP
MP
8mp
8GB
RAM
RAM
Octa-core
3300
mAh
mAh
(Non removable)
What's the better phone? Asus Zenfone 5Z (ZS621KL 256GB)
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!
9 Advantages 
15 Advantages | 26 Common items in both devices |
| UFS 2.1 |
| Until 1TB microSD, microSDXC |
| TFT IPS LCD |
| 16 million |
| Only digital zoom |
| PDAF: phase detection autofocus |
| HDR photo on both cameras |
| +19 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 | ||
| Realme 8i (64GB) | Asus Zenfone 5Z (ZS621KL 256GB) | |
| Model | Realme 8i (64GB) | Zenfone 5Z (ZS621KL 256GB) |
| Other model names | Realme 8i RMX3151 (64GB+4GB RAM) | Asus Zenfone 5z 8GB RAM (ZS621KL), ASUS_Z01RD |
| Country or region available |  (Global, International) |  India |
| Brand | Realme | Asus |
| Release date | 9/14/2021, Announced: 9/9/2021 | 6/1/2018 |
| Depth | 8.5 millimeters (0.33 inches) | 7.9 millimeters (0.31 inches) |
| Size (width x height) | 75.5 x 164.1 millimeters (2.97 x 6.46 in) | 75.65 x 153 millimeters (2.98 x 6.02 in) |
| Weight | 194 grams (6.79 ounces) | 165 grams (5.78 ounces) |
| Build, materials | Plastic body, glass front | Aluminum frame, glass front/back |
| Protection against water and others | Not supported | Not supported |
📲 Display | ||
| Realme 8i (64GB) | Asus Zenfone 5Z (ZS621KL 256GB) | |
| Display type | TFT IPS LCD | TFT IPS LCD |
| Screen size | 6.6" inches | 6.2" inches |
| Screen-to-body ratio | ~84.6% (screen-to-body ratio) | ~83.7% (screen-to-body ratio) |
| Display resolution | 1080x2412 pixels (20:9) | 1080x2246 pixels (18.7:9) |
| Touchscreen | Capacitive Multitouch | Capacitive Multitouch 10-points |
| Pixel density (dot pitch) | 400 PPI | 402 PPI |
| Colors | 16 million | 16 million |
| Scratch-resistant glass | Not supported | Gorilla Glass |
| Refresh rate | 120Hz | 60Hz |
| Display features | 600nits[peak] | 550nits[typ] |
🤖 Operating System | ||
| Realme 8i (64GB) | Asus Zenfone 5Z (ZS621KL 256GB) | |
| System version | Android 11 | Android 8.0 Oreo |
| Firmware update | feature not registered | Android 10 |
| User Interface | Realme UI 2.0 | feature not registered |
⚙️ Processor | ||
| Realme 8i (64GB) | Asus Zenfone 5Z (ZS621KL 256GB) | |
| Chipset | 64bit: MediaTek Helio G96 (12nm) | 64bit: Qualcomm Snapdragon 845 MSM8998 (10nm) |
| CPU | Octa-core, 2 processors: 2x 2.05GHz ARM Cortex-A76 (Dual-core) 6x 2GHz ARM Cortex-A55 (Hexa-core) | Octa-core, 2 processors: 4x 2.7GHz Kryo 385 Gold (Quad-core) 4x 1.7GHz Kryo 385 Silver (Quad-core) |
| GPU graphical controller | ARM Mali-G57 MC2 (850MHz) | Qualcomm Adreno 630 710Mhz |
| Performance (benchmark) | AnTuTu: 350000 (v9) | feature not registered |
💽 Memory and storage | ||
| Realme 8i (64GB) | Asus Zenfone 5Z (ZS621KL 256GB) | |
| RAM memory | 4GB LPDDR4X | 8GB LPDDR4X |
| Internal storage | 64GB (43GB available) UFS 2.1 | 256GB (240GB available) UFS 2.1 |
| External storage | Until 1TB microSD, microSDXC (dedicated slot) | Until 1TB microSD, microSDXC (hybrid slot/shares the same SIM-2 slot) |
📶 Mobile networks | ||
| Realme 8i (64GB) | Asus Zenfone 5Z (ZS621KL 256GB) | |
| Dual-SIM | Dual-SIM Standby - Call active on one sim card (dedicated slot) | Dual-SIM Standby - Call active on one sim card (hybrid slot/shares the same microSD slot) |
| SIM card | 2 slots (Dual-SIM) nano-SIM (4FF) | 2 slots (Dual-SIM) nano-SIM (4FF) |
| Maximum Download / Upload | 400/150 Mbps | 800/100 Mbps |
| Network technology | 2G, 3G, 4G | 2G, 3G, 4G |
| 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 850/900/2100 | UMTS 800/850/900 |
| Primary 4G network | LTE Cat13 (1, 3, 5, 8) TD-LTE (38, 40, 41) VoLTE | LTE Cat15 (Bands 1,2,3,5,7,8,18,19,20,26,28) TD-LTE (Bands 38,39,40,41) |
| Primary 5G network | Not supported | Not supported |
| 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 |
| Secondary 2G network | GSM 850/900/1800/1900 | GSM 850/900/1800/1900 |
| Secondary 3G network | UMTS 850/900/2100 | Not supported |
| Secondary 4G network | LTE Cat13 (1, 3, 5, 8) TD-LTE (38, 40, 41) VoLTE | Not supported |
| Secondary data network | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A | GPRS, EDGE |
📷 Camera | ||
| Realme 8i (64GB) | Asus Zenfone 5Z (ZS621KL 256GB) | |
| Back camera (main camera) | (triple camera) 50 megapixels 2MP macro f/2.4 2MP depth f/2.4 | (dual camera) 12 megapixels 8MP ultrawide f/2.012mm1/4"1.12µmFF |
| Main camera resolution | 8160x6120 pixels | 4000x3000 pixels |
| Video recording (primary) | Full HD (1920x1080) 30 fps | 4K UHD (3840x2160) 30 fps |
| Flash | LED flash | Dual-LED flash |
| Focal aperture | f/1.8 (aperture) | f/1.8 (aperture) |
| Focal length | 26mm lens | 24mm lens |
| Sensor size | 1/2.76" inches | 1/2.55" inches |
| Pixel size | 0.64µm pixel | 1.4µm pixel |
| Autofocus | PDAF: phase detection autofocus | PDAF: phase detection autofocus |
| Touch focus | Supported | Supported |
| Image stabilization | EIS: Digital 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 | Not supported |
| HDR | HDR photo on both cameras | HDR photo on both cameras |
| Camera extras | feature not registered | feature not registered |
📸 Front camera | ||
| Realme 8i (64GB) | Asus Zenfone 5Z (ZS621KL 256GB) | |
| Front camera (secondary) | 16 megapixels | 8 megapixels |
| Front camera resolution | 4608x3456 pixels | 3264x2448 pixels |
| Video recording (secondary) | Full HD (1920x1080) | Full HD (1920x1080) |
| Front flash | Not supported | Not supported |
| Focal aperture | f/2.1 (aperture) | f/2.0 (aperture) |
| Focal length | feature not registered | 24mm lens |
| Sensor size | 1/3" inches | 1/4" inches |
| Pixel size | 1µm pixel | 1.12µm pixel |
🔉 Sound and multimedia | ||
| Realme 8i (64GB) | Asus Zenfone 5Z (ZS621KL 256GB) | |
| Loudspeaker | Mono sound (not stereo) | Supported |
| Active noise cancellation | 2 microphones or more | 2 microphones or more |
| Radio | Not supported | FM |
| TV | Not supported | Not supported |
| Video formats | MP4, H.265, H.264, H.263, XviD, MKV | MP4, H.265, H.264, H.263 |
| Audio formats | MP3, WAV, WMA, eAAC+, FLAC | MP3, OGG, eAAC+, FLAC |
🔌 Connectivity | ||
| Realme 8i (64GB) | Asus Zenfone 5Z (ZS621KL 256GB) | |
| 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 | 3.5mm jack |
| TV output | USB Type-C (reversible) | Not supported |
| Bluetooth | 5.1 + 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 [wifi5] (2.4GHz, 5GHz) WiFi Direct, hotspot |
| DLNA | Not supported | Not supported |
| GPS | A-GPS, GeoTagging, GLONASS, GALILEO, BeiDou | A-GPS, GeoTagging, GLONASS, BeiDou |
| NFC | Not supported | Supported |
| Infrared port | Not supported | Not supported |
🧭 Sensors | ||
| Realme 8i (64GB) | Asus Zenfone 5Z (ZS621KL 256GB) | |
| Sensors | Accelerometer Ambient light sensor Compass Face unlock Fingerprint sensor (side-mounted) Gyroscope Proximity sensor | Accelerometer Ambient light sensor Compass Face unlock Fingerprint sensor (rear-mounted) Gyroscope Proximity sensor |
| Vibrating alert | Supported | Supported |
🔋 Battery | ||
| Realme 8i (64GB) | Asus Zenfone 5Z (ZS621KL 256GB) | |
| Battery type | LiPo: li-ion polymer (Non removable) | Li-Ion: lithium-ion (Non removable) |
| Battery capacity | 5000 mAh | 3300 mAh |
| Charger, watts | 18W Wired fast charging | 18W (9V/2A) Wired fast charging |
| Inductive / wireless charging | Not supported | Not supported |
| Talk time autonomy | feature not registered | 25 hours (1 days) |
| Standby | feature not registered | feature not registered |
➕ Other features | ||
| Realme 8i (64GB) | Asus Zenfone 5Z (ZS621KL 256GB) | |
| Call control | Voice dialing, Voice recorder, Voice commands | Voice dialing, Voice recorder |
| 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: Space Black, Space Purple • Screen film protector • Case protector | • 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) |
☢️ Radiation rate | ||
| Realme 8i (64GB) | Asus Zenfone 5Z (ZS621KL 256GB) | |
| SAR 1.6W/kg (USA, Mexico, etc.) | feature not registered | 1.04W/kg (head), 0.37W/kg (body) |
| SAR 2W/kg (Europe, UK, etc.) | feature not registered | 1.2W/kg (head), 1.477W/kg (body) |