In depth comparison and review of Xiaomi MI 4i and Xiaomi Redmi 9. Compare sizes, cameras, batteries, memory, and other important specifications and features to easily choose the right phone for you. Our goal is to help you uncover differences between the products and find the phone that will best fit your needs.
| DESIGN AND DIMENSIONS | Xiaomi MI 4i | Xiaomi Redmi 9 |
|---|
| Product Type | Smartphone | Smartphone | |
|---|---|---|---|
| Form Factor | Touch | Touch | |
| Height | 138.1 mm | 163.32 mm | Xiaomi Redmi 9 has greater height than Xiaomi MI 4i. |
| Width | 69.6 mm | 77.01 mm | Xiaomi Redmi 9 has greater width than Xiaomi MI 4i. |
| Depth | 7.8 mm | 9.1 mm | Xiaomi MI 4i is narrower than Xiaomi MI 4i. |
| Weight | 130 g | 198 g | Xiaomi MI 4i is lighter than Xiaomi MI 4i. |
| Body Colour | Black | Dark grey | White | Carbon grey | |
| Waterproof (Water-resistant) | - | - | |
| SAR Value | 1.29 W/kg | 1.065 W/kg (body), 0.789 W/kg (head), 2.309 W/kg (limb) | |
| Integrated Components | FM radio | Ultra-linear speaker | |
| Connector Type | Micro-USB - 5 pin Micro-USB Type B Headset jack - mini-phone 3.5mm |
USB Type-C - 24 pin USB-C Headset jack - mini-phone 3.5mm |
|
| SIM Card Type (Size) | Micro SIM | Nano SIM | |
| SIM Card Qty | Dual-SIM | Dual-SIM |
| DISPLAY | Xiaomi MI 4i | Xiaomi Redmi 9 |
|---|
| Display Type | LCD display | - | |
|---|---|---|---|
| Display Technology | IPS | - | |
| Screen Size (Display Size) | 5" | 6.53" | Xiaomi Redmi 9 has larger screen size than Xiaomi MI 4i. |
| Screen Resolution (Display Resolution) | 1920 x 1080 pixels | 2340 x 1080 pixels | Xiaomi Redmi 9 has better screen resolution than Xiaomi MI 4i. |
| Display Format | Full HD | Full HD+ | |
| Pixel Density | 441 ppi | 394 ppi | Xiaomi MI 4i has better pixel density than Xiaomi Redmi 9. |
| Aspect Ratio | - | 19.5:9 | |
| Max Brightness | - | 400 cd/m² | |
| Colour Depth | 16.7 million colours | - | |
| Contrast Ratio | - | 1500:1 | |
| Display Enhancement Technology | - | Sunlight mode | |
| Display Features | - | Colour temperature adjustment, Dot Drop display, Reading mode 2.0 | |
| Display Protection (Screen Protector) | Corning Concore Glass | Corning Gorilla Glass 3 (scratch resistant glass) |
| PROCESSOR | Xiaomi MI 4i | Xiaomi Redmi 9 |
|---|
| Processor Type (CPU) | Qualcomm Snapdragon 615 | MediaTek Helio G80 | |
|---|---|---|---|
| Clock Speed | 1.7 GHz | 2 GHz | Xiaomi Redmi 9 has higher clock speed than Xiaomi MI 4i. |
| Processor Core Qty | 8-core | 8-core | Both phones have the same number of phone cores. |
| 64-bit Architecture | Yes | Yes | Both phones have 64-bit architecture. |
| Graphics System (GPU) | Qualcomm ADRENO 405 | Mali-G52 MC2 |
| MEMORY | Xiaomi MI 4i | Xiaomi Redmi 9 |
|---|
| RAM | 2 GB | LPDDR4X SDRAM - 4 GB | Xiaomi Redmi 9 has more RAM than Xiaomi MI 4i. |
|---|---|---|---|
| Internal Memory Size (Storage Capacity) | 16 GB | 64 GB | Xiaomi Redmi 9 has more internal memory than Xiaomi MI 4i. |
| Supported Flash Memory Cards (Expandable Memory) | - | microSD |
| CAMERA | Xiaomi MI 4i | Xiaomi Redmi 9 |
|---|
| MAIN CAMERA |
|---|
| Number of Main Cameras | 1 | 4 | |
|---|---|---|---|
| Sensor Resolution | 13 Megapixel | 13 Megapixel | Both phones have the same camera resolution. |
| Lens Type | - | Wide-angle lens | |
| Lens Aperture | F/2.0 | F/2.2 | Xiaomi MI 4i has better lens aperture than Xiaomi MI 4i. |
| Lens Construction | 5-element | - | |
| Field of View (FoV) | - | 75.2 degree(s) | |
| Focus Adjustment | Automatic | Automatic | |
| Special Effects | - | HDR, Kaleidoscope | |
| HDR Mode | Auto HDR mode | - | |
| Camera Modes | Panorama, manual mode | Portrait mode | |
| Face Recognition (Face ID) | Face detection, smile detection | - | Xiaomi MI 4i has face detection. |
| Light Source | Dual LED flash | Flash | |
| Video Resolutions | 1920 x 1080 (1080p) | 1920 x 1080 (1080p) at 30 fps, 1280 x 720 (720p) at 30 fps |
| SECOND CAMERA |
|---|
| Sensor Resolution (2nd Camera) | - | 8 Megapixel | |
|---|---|---|---|
| Lens Type (2nd Camera) | - | Ultra wide-angle lens | |
| Lens Aperture (2nd Camera) | - | F/2.2 | |
| Field of View (2nd Camera) | - | 118 degree(s) |
| THIRD CAMERA |
|---|
| Sensor Resolution (3rd Camera) | - | 5 Megapixel | |
|---|---|---|---|
| Lens Aperture (3rd Camera) | - | F/2.4 | |
| Camera Functions (3rd Camera) | - | Macro camera |
| FOURTH CAMERA |
|---|
| Sensor Resolution (4th Camera) | - | 2 Megapixel | |
|---|---|---|---|
| Camera Functions (4th Camera) | - | Depth camera |
| FRONT CAMERA |
|---|
| Number of Front Cameras | 1 | 1 | |
|---|---|---|---|
| Sensor Resolution (Front) | 5 Megapixel | 8 Megapixel | Xiaomi Redmi 9 has better front camera resolution than Xiaomi MI 4i. |
| Lens Type (Front) | Wide-angle lens | - | |
| Lens Aperture (Front) | F/1.8 | F/2.0 | Xiaomi MI 4i has better front lens aperture than Xiaomi MI 4i. |
| Lens Element Qty (Front) | 5-element | - | |
| Field of View (Front) | - | 77.8 degree(s) | |
| Focus Adjustment | - | Focus free | |
| Special Effects (Front) | - | HDR | |
| Camera Modes (Front) | - | Portrait mode | |
| Light Source (Front) | - | Display flash | |
| Camera Features (Front) | - | Self-timer, Palm shutter |
| BATTERY AND CHARGING | Xiaomi MI 4i | Xiaomi Redmi 9 |
|---|
| Battery Capacity (Battery Size) | 3120 mAh | 5020 mAh | Xiaomi Redmi 9 has larger battery capacity than Xiaomi MI 4i. |
|---|---|---|---|
| Talk Time | 2100 minutes | 1860 minutes | Xiaomi MI 4i has longer battery life when making calls than Xiaomi Redmi 9. |
| Run Time Details | Talk (WCDMA): up to 2100 min | Talk: up to 1860 min Continuous navigation: up to 19 hrs Playback (video): up to 19 hrs Playback (Music): up to 185 hrs |
|
| Battery Technology | Lithium Ion | - |
| CELLULAR | Xiaomi MI 4i | Xiaomi Redmi 9 |
|---|
| Technology | TD-SCDMA / WCDMA (UMTS) / GSM | WCDMA (UMTS) / GSM | |
|---|---|---|---|
| Mobile Broadband Generation | 4G | 4G | Both phones have the same mobile network generation. |
| Operating System | Android 5.0.2 (Lollipop) | - | |
| User Interface | MIUI V6 | - | |
| Navigation | GPS, A-GPS, GLONASS, BeiDou | GPS, A-GPS, GLONASS, BeiDou |
| COMMUNICATIONS | Xiaomi MI 4i | Xiaomi Redmi 9 |
|---|
| Data Transmission | GPRS, EDGE, HSDPA, HSUPA, HSPA+, FDD-LTE, TDD-LTE | GPRS, EDGE, HSDPA, HSUPA, HSPA+, VoLTE, FDD-LTE, TDD-LTE | |
|---|---|---|---|
| 2G Band | 850 GSM, 900 GSM, 1800 GSM, 1900 GSM | - | |
| 3G UMTS Band | - | Band 1, Band 2, Band 4, Band 5, Band 8 | |
| 3G UMTS Frequency | - | 2100, 1900, 1700, 850, 900 | |
| 4G LTE Band | Band 3, Band 7, Band 38, Band 39, Band 40, Band 41 | Band 1, Band 2, Band 3, Band 4, Band 5, Band 7, Band 8, Band 20, Band 28, Band 38, Band 40, Band 41 | |
| 4G LTE Frequency | FDD 1800+, FDD 2600, TDD 2600, TDD 1900, TDD 2300, TDD 2500 | FDD 2100, FDD 1900 PCS, FDD 1800+, FDD 1700 - 2110 AWS, FDD 850, FDD 2600, FDD 900, FDD 800 DD, FDD 700 APT, TDD 2600, TDD 2300, TDD 2500 | |
| Wireless Interface | IEEE 802.11a/b/g/n/ac | IEEE 802.11b/g/n | |
| Bluetooth | Bluetooth 4.1 | Bluetooth 5.0 | |
| Bluetooth Profiles | A2DP, HID | - | |
| Messaging Services | SMS, MMS | SMS, MMS |
| MEDIA | Xiaomi MI 4i | Xiaomi Redmi 9 |
|---|
| Supported Digital Audio Standards | WAV, MP3, FLAC, eAAC+ | AAC, PCM, MP3, FLAC, AAC +, eAAC+, APE (Monkey's Audio), AMR-WB, AMR-NB | |
|---|---|---|---|
| Supported Digital Video Standards | XviD, MPEG-4, DivX, H.264 | MKV, H.264, ASP, MP4 |
| FEATURES | Xiaomi MI 4i | Xiaomi Redmi 9 |
|---|
| Phone Functions | Speakerphone, call timer, conference call, flight mode, vibrating alert | Speakerphone, voice control, call timer, conference call, flight mode, voice dialing, vibrating alert | |
|---|---|---|---|
| Sensors | Accelerometer, ambient light sensor, proximity sensor, digital compass, gyro sensor, hall sensor | Accelerometer, ambient light sensor, digital compass, distance sensor, infrared (IR) sensor | |
| Security Devices | - | Face recognition, fingerprint reader | |
| Additional Phone Features | MIMO technology, Active noise-cancellation | Fast Charging, AI face unlock |
| OTHERS | Xiaomi MI 4i | Xiaomi Redmi 9 |
|---|
| Included Accessories | Power adapter | SIM card removal tool, USB-C cable, TPU case, 10W charger |
|---|
cs
sk
de
it
es
fr
hu
pt
ru
pl
br
ro
