Realme 8i (64GB) vs Xiaomi Poco X3 Pro (J20SI 128GB)
Side by side comparison between Realme 8i vs Xiaomi Poco X3 Pro 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
6.67"
IPS
IPS
1080x2400
48
MP
MP
20mp
6GB
RAM
RAM
Octa-core
5160
mAh
mAh
(Non removable)
What's the better phone? Xiaomi Poco X3 Pro (J20SI 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!
6 Advantages 
19 Advantages | 27 Common items in both devices |
| Until 1TB microSD, microSDXC |
| Plastic body, glass front |
| TFT IPS LCD |
| 120Hz |
| 16 million |
| Only digital zoom |
| PDAF: phase detection autofocus |
| +20 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) | Xiaomi Poco X3 Pro (J20SI 128GB) | |
| Model | Realme 8i (64GB) | Poco X3 Pro (J20SI 128GB) |
| Other model names | Realme 8i RMX3151 (64GB+4GB RAM) | POCO X3 Pro M2102J20SI (128GB+6GB RAM) |
| Country or region available |  (Global, International) |  India |
| Brand | Realme | Xiaomi |
| Release date | 9/14/2021, Announced: 9/9/2021 | 3/24/2021, Announced: 3/22/2021 |
| Depth | 8.5 millimeters (0.33 inches) | 9.4 millimeters (0.37 inches) |
| Size (width x height) | 75.5 x 164.1 millimeters (2.97 x 6.46 in) | 76.8 x 165.3 millimeters (3.02 x 6.51 in) |
| Weight | 194 grams (6.79 ounces) | 215 grams (7.53 ounces) |
| Build, materials | Plastic body, glass front | Plastic body, glass front |
| Protection against water and others | Not supported | IP53 certified: protection against dust and splashing |
📲 Display | ||
| Realme 8i (64GB) | Xiaomi Poco X3 Pro (J20SI 128GB) | |
| Display type | TFT IPS LCD | TFT IPS LCD |
| Screen size | 6.6" inches | 6.67" inches |
| Screen-to-body ratio | ~84.6% (screen-to-body ratio) | ~84.6% (screen-to-body ratio) |
| Display resolution | 1080x2412 pixels (20:9) | 1080x2400 pixels (20:9) |
| Touchscreen | Capacitive Multitouch | Capacitive Multitouch |
| Pixel density (dot pitch) | 400 PPI | 395 PPI |
| Colors | 16 million | 16 million |
| Scratch-resistant glass | Not supported | Gorilla Glass 6 |
| Refresh rate | 120Hz | 120Hz |
| Display features | 600nits[peak] | 450nits[typ] HDR10 |
🤖 Operating System | ||
| Realme 8i (64GB) | Xiaomi Poco X3 Pro (J20SI 128GB) | |
| System version | Android 11 | Android 11 |
| Firmware update | feature not registered | Android 13 |
| User Interface | Realme UI 2.0 | MIUI 12.5 / 13 / 14 |
⚙️ Processor | ||
| Realme 8i (64GB) | Xiaomi Poco X3 Pro (J20SI 128GB) | |
| Chipset | 64bit: MediaTek Helio G96 (12nm) | 64bit: Qualcomm Snapdragon 860 (SM8150-AC) (7nm) |
| CPU | Octa-core, 2 processors: 2x 2.05GHz ARM Cortex-A76 (Dual-core) 6x 2GHz ARM Cortex-A55 (Hexa-core) | Octa-core, 3 processors: 1x 2.96GHz Kryo 485 Gold (Single-core) 3x 2.42GHz Kryo 485 Gold (Triple-core) 4x 1.78GHz Kryo 485 Silver (Quad-core) |
| GPU graphical controller | ARM Mali-G57 MC2 (850MHz) | Qualcomm Adreno 640 (250-672MHz) |
| Performance (benchmark) | AnTuTu: 350000 (v9) | AnTuTu: 483527 (v8) Geekbench: 2574 (v5.1) GFXBench: 38fps (ES 3.1 onscreen) |
💽 Memory and storage | ||
| Realme 8i (64GB) | Xiaomi Poco X3 Pro (J20SI 128GB) | |
| RAM memory | 4GB LPDDR4X | 6GB LPDDR4X |
| Internal storage | 64GB (43GB available) UFS 2.1 | 128GB (106GB available) UFS 3.1 |
| 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) | Xiaomi Poco X3 Pro (J20SI 128GB) | |
| 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 | 800/150 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 850/900/1700/1900/2100 |
| Primary 4G network | LTE Cat13 (1, 3, 5, 8) TD-LTE (38, 40, 41) VoLTE | LTE Cat15/13 (1, 2, 3, 4, 5, 7, 8, 20, 28) TD-LTE (38, 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 | UMTS 850/900/1700/1900/2100 |
| Secondary 4G network | LTE Cat13 (1, 3, 5, 8) TD-LTE (38, 40, 41) VoLTE | LTE Cat15/13 (1, 2, 3, 4, 5, 7, 8, 20, 28) TD-LTE (38, 40, 41) |
| 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 | ||
| Realme 8i (64GB) | Xiaomi Poco X3 Pro (J20SI 128GB) | |
| Back camera (main camera) | (triple camera) 50 megapixels 2MP macro f/2.4 2MP depth f/2.4 | (quad camera) 48 megapixels 8MP ultrawide f/2.2119°1.0µm 2MP macro f/2.4 2MP depth f/2.4 |
| Main camera resolution | 8160x6120 pixels | 8000x6000 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 | feature not registered |
| Sensor size | 1/2.76" inches | 1/2" inches |
| Pixel size | 0.64µm pixel | 0.8µm pixel |
| Autofocus | PDAF: phase detection autofocus | PDAF: phase detection autofocus |
| Touch focus | Supported | Supported |
| Image stabilization | EIS: Digital 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 | Not supported |
| HDR | HDR photo on both cameras | HDR photo on both cameras |
| Camera extras | feature not registered | 1080p@960fps |
📸 Front camera | ||
| Realme 8i (64GB) | Xiaomi Poco X3 Pro (J20SI 128GB) | |
| Front camera (secondary) | 16 megapixels | 20 megapixels |
| Front camera resolution | 4608x3456 pixels | 5184x3840 pixels |
| Video recording (secondary) | Full HD (1920x1080) | Full HD (1920x1080) |
| Front flash | Not supported | Not supported |
| Focal aperture | f/2.1 (aperture) | f/2.2 (aperture) |
| Focal length | feature not registered | feature not registered |
| Sensor size | 1/3" inches | 1/3.4" inches |
| Pixel size | 1µm pixel | 0.8µm pixel |
🔉 Sound and multimedia | ||
| Realme 8i (64GB) | Xiaomi Poco X3 Pro (J20SI 128GB) | |
| Loudspeaker | Mono sound (not stereo) | Stereo sound with dual speakers |
| 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, XviD, MKV |
| Audio formats | MP3, WAV, WMA, eAAC+, FLAC | MP3, WAV, WMA, eAAC+, FLAC |
🔌 Connectivity | ||
| Realme 8i (64GB) | Xiaomi Poco X3 Pro (J20SI 128GB) | |
| 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 | 5.1 + 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) + MIMO WiFi Direct, hotspot |
| DLNA | Not supported | Not supported |
| GPS | A-GPS, GeoTagging, GLONASS, GALILEO, BeiDou | A-GPS, GeoTagging, GLONASS, GALILEO, BeiDou |
| NFC | Not supported | Not supported |
| Infrared port | Not supported | Supported |
🧭 Sensors | ||
| Realme 8i (64GB) | Xiaomi Poco X3 Pro (J20SI 128GB) | |
| Sensors | Accelerometer Ambient light sensor Compass Face unlock Fingerprint sensor (side-mounted) Gyroscope Proximity sensor | Accelerometer Ambient light sensor Compass Face unlock Fingerprint sensor (side-mounted) Gyroscope Proximity sensor |
| Vibrating alert | Supported | Supported |
🔋 Battery | ||
| Realme 8i (64GB) | Xiaomi Poco X3 Pro (J20SI 128GB) | |
| Battery type | LiPo: li-ion polymer (Non removable) | LiPo: li-ion polymer (Non removable) |
| Battery capacity | 5000 mAh | 5160 mAh |
| Charger, watts | 18W Wired fast charging | 33W Wired fast charging |
| Inductive / wireless charging | Not supported | Not supported |
| Talk time autonomy | feature not registered | feature not registered |
| Standby | feature not registered | feature not registered |
➕ Other features | ||
| Realme 8i (64GB) | Xiaomi Poco X3 Pro (J20SI 128GB) | |
| 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: Space Black, Space Purple • Screen film protector • Case protector | • Colors: Phantom Black, Frost Blue, Metal Bronze • Silicone Case included • Cooling up to 6 °C • LiquidCool 1.0 Plus |
☢️ Radiation rate | ||
| Realme 8i (64GB) | Xiaomi Poco X3 Pro (J20SI 128GB) | |
| SAR 1.6W/kg (USA, Mexico, etc.) | feature not registered | 0.99W/kg (head), 0.67W/kg (body) |
| SAR 2W/kg (Europe, UK, etc.) | feature not registered | 0.57W/kg (head), 0.9W/kg (body) |