| Physical features | Xiaomi Redmi 9i (128GB) | Sony Xperia Go (ST27i) |
| Model | Redmi 9i (128GB) | Xperia Go (ST27i) |
| Other model names | Xiaomi Redmi 9i M2006C3LII | Sony Xperia Go ST27, Sony ST27i, Sony Lotus |
| Country or region available | 
India | 
(Global, International) |
| Brand | Xiaomi | Sony |
| Release date | September, 2020 | July, 2012 |
| Depth | 9 millimeters (0.35 inches) | 9.8 millimeters (0.39 inches) |
| Size (width x height) | 77.07 x 164.9 millimeters (3.03 x 6.49 in) | 60.3 x 111 millimeters (2.37 x 4.37 in) |
| Weight | 194 grams (6.79 ounces) | 110 grams (3.85 ounces) |
| Qwerty physical keyboard | Not supported | Not supported |
| Antenna | Internal antenna | Internal antenna |
| Build, materials | Plastic body, glass front | feature not registered |
| Protection against water and others | Not supported | Waterproof (IP?) |
| System (OS) | Xiaomi Redmi 9i (128GB) | Sony Xperia Go (ST27i) |
| Operating system | Android 10 | Android 2.3.7 Gingerbread |
| Firmware update | feature not registered | Android 4.1.2 Jelly Bean |
| Hardware | Xiaomi Redmi 9i (128GB) | Sony Xperia Go (ST27i) |
| Chipset | 64bit - MediaTek Helio G25 (12nm) | 32bit - ST-Ericsson NovaThor U8500 |
| CPU processor | Octa-Core, 2 processors:
2Ghz Quad-Core ARM Cortex-A53
1.5Ghz Quad-Core ARM Cortex-A53 | 1Ghz Dual-Core ARM Cortex-A9 |
| GPU graphical controller | PowerVR GE8320 650Mhz | ARM Mali-400 |
| RAM memory | 4GB LPDDR4X | 512MB LPDDR2 |
| Internal storage | 128GB (106GB available)
eMMC 5.1 | 8GB (4GB available) |
| External storage | Until 512GB microSD, microSDXC
(dedicated slot) | Until 32GB microSD, microSDHC
(dedicated slot) |
| Display | Xiaomi Redmi 9i (128GB) | Sony Xperia Go (ST27i) |
| Display type | TFT IPS LCD | TFT LED-Backlit LCD |
| Screen size | 6.53" inches | 3.5" inches |
| Screen-to-body ratio | ~81% (screen-to-body ratio) | ~54.5% (screen-to-body ratio) |
| Display resolution | 720x1600 pixels (20:9) | 320x480 pixels |
| Touchscreen | Capacitive Multitouch | Capacitive Multitouch 4-points |
| Pixel density (dot pitch) | 269 PPI | 165 PPI |
| Colors | 16 million | 16 million |
| Scratch-resistant glass | Not supported | Scratch-resistant glass |
| Display features | 60Hz, 400 nits | feature not registered |
| Mobile networks | Xiaomi Redmi 9i (128GB) | Sony Xperia Go (ST27i) |
| Dual-SIM | Dual-SIM Standby - Call active on one sim card
(dedicated slot) | Not supported |
| SIM card | 2 slots (Dual-SIM)
nano-SIM (4FF) | 1 slot (Single-SIM)
Standard mini-SIM (2FF) |
| Maximum download/upload | 300/50 Mbps | 14.4/5.76 Mbps |
| Network technology | 2G, 3G, 4G | 2G, 3G |
| Frequency, bands | Expand band detailsCollapse 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 850/900/1900/2100 | UMTS 900/2100 |
| Primary 4G network | LTE Cat6 (1, 3, 5, 8)
TD-LTE (40, 41)
VoLTE | Not supported |
| 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 |
| Secondary 2G network | GSM 850/900/1800/1900 | Not supported |
| Secondary 3G network | Not supported | Not supported |
| Secondary 4G network | Not supported | Not supported |
| Secondary data network | GPRS, EDGE | Not supported |
| Calling | Xiaomi Redmi 9i (128GB) | Sony Xperia Go (ST27i) |
| Messaging | SMS (T9), MMS, E-mail, Push mail | SMS (T9), MMS, E-mail, Push mail |
| Speakerphone | Supported | Supported |
| Video calling | Supported | Not supported |
| Call control | Voice dialing, Voice recorder, Voice commands | Voice dialing, Voice recorder, Voice commands |
| Camera | Xiaomi Redmi 9i (128GB) | Sony Xperia Go (ST27i) |
| Back camera (main camera) | 13 megapixels | 5 megapixels |
| Main camera resolution | 4128x3096 pixels | 2592x1944 pixels |
| Video recording (primary) | Full HD (1920x1080) 30 fps | HD (1280x720) 30 fps |
| Flash | LED flash | LED flash |
| Focal aperture | f/2.2 (aperture) | feature not registered |
| Focal length | 28mm lens | feature not registered |
| Sensor size | feature not registered | feature not registered |
| Pixel size | 1µm pixel | feature not registered |
| Autofocus | PDAF: phase detection autofocus | Autofocus |
| Touch focus | Supported | Supported |
| Image stabilization | EIS: Digital stabilization | feature not registered |
| 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 | Not supported |
| 2ª camera | Xiaomi Redmi 9i (128GB) | Sony Xperia Go (ST27i) |
| Front camera (secondary) | 5 megapixels | Not supported |
| Front camera resolution | 2560x1920 pixels | Not supported |
| Video recording (secondary) | Full HD (1920x1080) | Not supported |
| Front flash | Not supported | Not supported |
| Focal aperture | f/2.2 (aperture) | feature not registered |
| Focal length | feature not registered | feature not registered |
| Sensor size | feature not registered | feature not registered |
| Pixel size | 1.12µm pixel | feature not registered |
| Multimedia | Xiaomi Redmi 9i (128GB) | Sony Xperia Go (ST27i) |
| Radio | FM | FM (RDS) |
| TV | Not supported | Not supported |
| Video formats | MP4, H.265, H.264, H.263, XviD, MKV | MP4, H.263, H.264, WMV |
| Audio formats | MP3, WAV, WMA, eAAC+, FLAC | MP3, eAAC+, WMA, WAV |
| Connectivity | Xiaomi Redmi 9i (128GB) | Sony Xperia Go (ST27i) |
| USB | MicroUSB 2.0, USB OTG On-The-Go | MicroUSB 2.0 |
| TV output | Micro-B USB SlimPort | Not supported |
| Audio output | 3.5mm jack | 3.5mm jack |
| Bluetooth | 5.0 + A2DP/LE | 3.0 + A2DP |
| WiFi | 802.11 b/g/n (2.4Ghz) | 802.11 b/g/n (2.4Ghz) |
| DLNA | Not supported | Supported |
| NFC | Not supported | Supported |
| GPS | A-GPS, GeoTagging, GLONASS, BeiDou | A-GPS, GeoTagging |
| Infrared port | Not supported | Not supported |
| Other functions | Xiaomi Redmi 9i (128GB) | Sony Xperia Go (ST27i) |
| Active noise cancellation | Supported | Not supported |
| Vibrating alert | Supported | Supported |
| Ringtones | Polyphonic and customized | Polyphonic and customized |
| Web browser | HTML, XHTML, HTML5 | HTML, XHTML, Flash player |
| Sensors | Accelerometer
Proximity sensor
Ambient Light sensor
Face unlock
| Accelerometer
Proximity sensor
Compass
Ambient Light sensor
Barometer
|
| Other features | - Colors: Midnight Black, Sea Blue, Nature Green
- MIUI 12
- WiFi direct, hotspot | - Colors: White, Black, Yellow
- Sony Reality Display
- Sony Mobile BRAVIA Engine
- 3D surround sound
- Sony xLOUD
- Video stabiliser
- WiFi hotspot
- IP67 certified: dust and water proof
- Java framework |
| Power supply | Xiaomi Redmi 9i (128GB) | Sony Xperia Go (ST27i) |
| Battery | LiPo: Li-Ion polymer (Non removable) | Li-Ion: Lithium-Ion (Non removable) |
| Battery capacity | 5000 mAh | 1305 mAh |
| Charger, watts | 10W (5V/2A) Standard charging | Standard charging |
| Talk time autonomy | feature not registered | 330 minutes | 5.5 hours | 0.2 day |
| Standby | feature not registered | 27600 minutes | 460 hours | 19.2 days |
| Radiation rate | Xiaomi Redmi 9i (128GB) | Sony Xperia Go (ST27i) |
| SAR 1.6W/kg (USA, Mexico, etc.) | feature not registered | 1.12W/kg (head) | 0.96W/kg (body) |
| SAR 2W/kg (Europe, UK, etc.) | feature not registered | 0.89W/kg (head) |