Asus Zenfone 8 (128GB/6GB) vs Xiaomi Redmi Note 9 (128GB Global)
Side by side comparison between Asus Zenfone 8 vs Xiaomi Redmi Note 9 phones, differences, pros, cons and full specifications. What's the better?
,
5.9"
AMOLED
AMOLED
1080x2400
64
MP
MP
12mp
6GB
RAM
RAM
Octa-core
4000
mAh
mAh
(Non removable)
vs
6.53"
IPS
IPS
1080x2340
48
MP
MP
13mp
4GB
RAM
RAM
Octa-core
5020
mAh
mAh
(Non removable)
What's the better phone? Asus Zenfone 8 (128GB/6GB)
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!
23 Advantages 
4 Advantages | 31 Common items in both devices |
| 128GB (107GB available) / 128GB (106GB available) |
| 8.9 millimeters (0.35 inches) |
| 16 million |
| LED flash |
| Only digital zoom |
| PDAF: phase detection autofocus |
| BSI sensor |
| +24 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 8 (128GB/6GB) | Redmi Note 9 (128GB Global) | |
| Model | Zenfone 8 (128GB/6GB) | Redmi Note 9 (128GB Global) |
| Other model names | Asus Zenfone 8 (ZS590KS, ZS590KS-2A007EU) | Mi Redmi Note 9 M2003J15SG Global version (NFC) |
| Country or region available |  (Global, International) | (Global, International) |
| Brand | Asus | Xiaomi |
| Release date | 5/13/2021, Announced: 5/12/2021 | 5/12/2020, Announced: 4/30/2020 |
| Depth | 8.9 millimeters (0.35 inches) | 8.9 millimeters (0.35 inches) |
| Size (width x height) | 68.5 x 148 millimeters (2.7 x 5.83 in) | 77.2 x 162.3 millimeters (3.04 x 6.39 in) |
| Weight | 169 grams (5.92 ounces) | 199 grams (6.97 ounces) |
| Build, materials | Aluminum frame, glass front/back | Plastic body, glass front |
| Protection against water and others | IP68 certified: water-resistant up to 1.5 meters for 30min and dust-resistant | Water repellent nano-coating (don't immerse) |
📲 Display | ||
| Asus Zenfone 8 (128GB/6GB) | Redmi Note 9 (128GB Global) | |
| Display type | Super AMOLED | TFT IPS LCD |
| Screen size | 5.9" inches | 6.53" inches |
| Screen-to-body ratio | ~82.9% (screen-to-body ratio) | ~83.5% (screen-to-body ratio) |
| Display resolution | 1080x2400 pixels (20:9) | 1080x2340 pixels (19.5:9) |
| Touchscreen | Capacitive Multitouch 10-points | Capacitive Multitouch |
| Pixel density (dot pitch) | 446 PPI | 395 PPI |
| Colors | 16 million | 16 million |
| Scratch-resistant glass | Gorilla Glass Victus | Gorilla Glass 5 |
| Refresh rate | 120Hz | 60Hz |
| Display features | 700nits[typ], 1100nits[peak] HDR10+ Always-On Display | 450nits[typ] |
🤖 Operating System | ||
| Asus Zenfone 8 (128GB/6GB) | Redmi Note 9 (128GB Global) | |
| System version | Android 11 | Android 10 |
| Firmware update | Android 13 | Android 11 |
| User Interface | ZenUI 8 / 9 / 10 | MIUI 11 / 12 |
⚙️ Processor | ||
| Asus Zenfone 8 (128GB/6GB) | Redmi Note 9 (128GB Global) | |
| Chipset | 64bit: Qualcomm Snapdragon 888 (SM8350) (5nm) | 64bit: MediaTek Helio G85 (12nm) |
| CPU | 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) | Octa-core, 2 processors: 2x 2GHz ARM-Cortex-A75 (Dual-core) 6x 1.8GHz ARM-Cortex-A55 (Hexa-core) |
| GPU graphical controller | Qualcomm Adreno 660 (840MHz) | ARM Mali-G52 MC2 (1GHz) |
| Performance (benchmark) | AnTuTu: 676001 (v8), 799738 (v9) Geekbench: 3604 (v5.1) GFXBench: 61fps (ES 3.1 onscreen) | AnTuTu: 200451 (v8) Geekbench: 1292 (v5.1) |
💽 Memory and storage | ||
| Asus Zenfone 8 (128GB/6GB) | Redmi Note 9 (128GB Global) | |
| RAM memory | 6GB LPDDR5 | 4GB LPDDR4X |
| Internal storage | 128GB (107GB available) UFS 3.1 | 128GB (106GB available) eMMC 5.1 |
| External storage | Not supported | Until 512GB microSD, microSDXC (dedicated slot) |
📶 Mobile networks | ||
| Asus Zenfone 8 (128GB/6GB) | Redmi Note 9 (128GB Global) | |
| Dual-SIM | Dual-SIM Standby - Call active on one sim card | Dual-SIM Standby - Call active on one sim card (dedicated slot) |
| SIM card | 2 slots (Dual-SIM) nano-SIM (4FF) | 2 slots (Dual-SIM) nano-SIM (4FF) |
| Maximum Download / Upload | 2000/1024 Mbps | 300/150 Mbps |
| Network technology | 2G, 3G, 4G, 5G | 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 800/850/900/1700/1900/2100 | UMTS 850/900/1700/1900/2100 |
| Primary 4G network | 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) | LTE Cat7 (1, 2, 3, 4, 5, 7, 8, 20, 28) TD-LTE (38, 40, 41) VoLTE |
| Primary 5G network | 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) | Not supported |
| Primary data network | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A, SA/NSA | 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 800/850/900/1700/1900/2100 | UMTS 850/900/1700/1900/2100 |
| Secondary 4G network | 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) | LTE Cat7 (1, 2, 3, 4, 5, 7, 8, 20, 28) TD-LTE (38, 40, 41) VoLTE |
| Secondary data network | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A |
📷 Camera | ||
| Asus Zenfone 8 (128GB/6GB) | Redmi Note 9 (128GB Global) | |
| Back camera (main camera) | (dual camera) 64 megapixels 12MP ultrawide f/2.2112°14mm1/2.55"1.4µmPDAF | (quad camera) 48 megapixels 8MP ultrawide f/2.213mm1/4"1.12µm118° 2MP macro f/2.41.75µmAF 2MP depth f/2.41/5"1.7µm |
| Main camera resolution | 10120x6328 pixels | 8000x6000 pixels |
| Video recording (primary) | 8K UHD (7680x4320) 24 fps | Full HD (1920x1080) 30 fps |
| Flash | LED flash | LED flash |
| Focal aperture | f/1.8 (aperture) | f/1.8 (aperture) |
| Focal length | 26mm (lens) | 26mm (lens) |
| Sensor size | 1/1.73" inches | 1/2" inches |
| Pixel size | 0.8µm 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 | Supported | Supported |
| HDR | HDR photo/video on both cameras | HDR photo on both cameras |
| Camera extras | 4K@120fps 1080p@240fps 720p@480fps | feature not registered |
📸 Front camera | ||
| Asus Zenfone 8 (128GB/6GB) | Redmi Note 9 (128GB Global) | |
| Front camera (secondary) | 12 megapixels | 13 megapixels |
| Front camera resolution | 4000x3000 pixels | 4128x3096 pixels |
| Video recording (secondary) | 4K UHD (3840x2160) | Full HD (1920x1080) |
| Front flash | Not supported | Not supported |
| Focal aperture | f/2.5 (aperture) | f/2.3 (aperture) |
| Focal length | 28mm (lens) | 29mm (lens) |
| Sensor size | 1/2.93" inches | 1/3.06" inches |
| Pixel size | 1.22µm pixel | 1.12µm pixel |
🔉 Sound and multimedia | ||
| Asus Zenfone 8 (128GB/6GB) | Redmi Note 9 (128GB Global) | |
| Loudspeaker | Stereo sound 32-bit/384kHz | Mono sound (not stereo) |
| Active noise cancellation | 2 microphones or more | 2 microphones or more |
| Radio | FM | FM |
| 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 8 (128GB/6GB) | Redmi Note 9 (128GB Global) | |
| 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) | USB Type-C (reversible) |
| Bluetooth | 5.2 + A2DP/LE | 5.0 + A2DP/LE |
| WiFi | 802.11 a/b/g/n/ac/ax [wifi6E/6] (2.4GHz, 5GHz, 6GHz) + MIMO WiFi Direct, hotspot | 802.11 a/b/g/n/ac [wifi5] (2.4GHz, 5GHz) + MIMO WiFi Direct, hotspot |
| DLNA | Not supported | Not supported |
| GPS | A-GPS, GeoTagging, GLONASS, GALILEO, BeiDou, QZSS, NavIC | A-GPS, GeoTagging, GLONASS, GALILEO, BeiDou |
| NFC | Supported | Supported |
| Infrared port | Not supported | Supported |
🧭 Sensors | ||
| Asus Zenfone 8 (128GB/6GB) | Redmi Note 9 (128GB Global) | |
| Sensors | Accelerometer Ambient light sensor Compass Face unlock Fingerprint sensor (under display) Gyroscope Hall effect Proximity sensor | Accelerometer Ambient light sensor Compass Face unlock Fingerprint sensor (rear-mounted) Gyroscope Proximity sensor |
| Vibrating alert | Supported | Supported |
🔋 Battery | ||
| Asus Zenfone 8 (128GB/6GB) | Redmi Note 9 (128GB Global) | |
| Battery type | LiPo: li-ion polymer (Non removable) | LiPo: li-ion polymer (Non removable) |
| Battery capacity | 4000 mAh | 5020 mAh |
| Charger, watts | 30W Wired fast charging 5W Reverse charging by cable Quick Charge 4 USB Power Delivery 3.0 | 18W Wired fast charging 9W Reverse charging by cable |
| Inductive / wireless charging | Not supported | Not supported |
| Talk time autonomy | feature not registered | 33 hours (1.4 days) |
| Standby | feature not registered | feature not registered |
➕ Other features | ||
| Asus Zenfone 8 (128GB/6GB) | Redmi Note 9 (128GB Global) | |
| Call control | Voice dialing, Voice recorder, Voice commands | 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: Obsidian Black, Horizon Silver | • Colors: Forest Green, Midnight Grey, Polar White • 22.5W charger (18W phone support) |
☢️ Radiation rate | ||
| Asus Zenfone 8 (128GB/6GB) | Redmi Note 9 (128GB Global) | |
| SAR 1.6W/kg (USA, Mexico, etc.) | feature not registered | 0.84W/kg (head), 0.9W/kg (body) |
| SAR 2W/kg (Europe, UK, etc.) | feature not registered | 0.8W/kg (head), 1.14W/kg (body) |