Detailed comparison and review of Xiaomi Redmi Note 4 and Xiaomi MI A1. With our comprehensive overview, you can simply compare sizes, functions, but also other key features of both phones and easily decide which one is the right choice for you. Our goal is to help you identify the main differences between products and find the phone that best fits your needs and expectations.
| DESIGN AND DIMENSIONS | Xiaomi Redmi Note 4 | Xiaomi MI A1 |
|---|
| Product Type | Smartphone | Smartphone | |
|---|---|---|---|
| Form Factor | Touch | Touch | |
| Height | 151 mm | 155.4 mm | Xiaomi MI A1 has greater height than Xiaomi Redmi Note 4. |
| Width | 76 mm | 75.8 mm | Xiaomi Redmi Note 4 has greater width than Xiaomi MI A1. |
| Depth | 8.38 mm | 7.3 mm | Xiaomi MI A1 is narrower than Xiaomi Redmi Note 4. |
| Weight | 175 g | 165 g | Xiaomi MI A1 is lighter than Xiaomi Redmi Note 4. |
| Body Colour | Grey | Silver | Gold | Black | |
| Body Material | Metal | Metal | |
| Waterproof (Water-resistant) | - | - | |
| SAR Value | - | 0.76 W/kg (body), 1.75 W/kg (head) | |
| Integrated Components | - | FM radio | |
| Connector Type | Micro-USB - 5 pin Micro-USB Type B Headset jack |
USB Type-C - 24 pin USB-C Headset jack - mini-phone 3.5mm |
|
| SIM Card Type (Size) | Micro SIM, nano SIM | Nano SIM | |
| SIM Card Qty | Dual-SIM | Dual-SIM | |
| SIM Card Configuration Details | - | Nano SIM + nano SIM/microSD |
| DISPLAY | Xiaomi Redmi Note 4 | Xiaomi MI A1 |
|---|
| Display Type | LCD display | LCD display | |
|---|---|---|---|
| Display Technology | IPS | LTPS IPS | |
| Screen Size (Display Size) | 5.5" | 5.5" | Both phones have the same screen size. |
| Screen Resolution (Display Resolution) | 1920 x 1080 pixels | 1920 x 1080 pixels | Both phones have the same screen resolution. |
| Display Format | Full HD | Full HD | |
| Pixel Density | 401 ppi | 403 ppi | Xiaomi MI A1 has better pixel density than Xiaomi Redmi Note 4. |
| Max Brightness | - | 450 cd/m² | |
| Contrast Ratio | 1000:1 | - | |
| Display Features | Night Display | 2.5D curved glass | |
| Display Protection (Screen Protector) | - | Corning Gorilla Glass (scratch resistant glass) |
| PROCESSOR | Xiaomi Redmi Note 4 | Xiaomi MI A1 |
|---|
| Processor Type (CPU) | MediaTek Helio X20 | Qualcomm Snapdragon 625 | |
|---|---|---|---|
| Clock Speed | 2.1 GHz | 2 GHz | Xiaomi Redmi Note 4 has higher clock speed than Xiaomi MI A1. |
| Processor Core Qty | 10-core | 8-core | Xiaomi Redmi Note 4 has higher processor core quantity than Xiaomi MI A1. |
| 64-bit Architecture | Yes | - | Xiaomi Redmi Note 4 has 64-bit architecture. |
| Graphics System (GPU) | Mali T880 MP4 | Qualcomm ADRENO 506 |
| MEMORY | Xiaomi Redmi Note 4 | Xiaomi MI A1 |
|---|
| RAM | 2 GB | 4 GB | Xiaomi MI A1 has more RAM than Xiaomi Redmi Note 4. |
|---|---|---|---|
| Internal Memory Size (Storage Capacity) | 16 GB | 32 GB | Xiaomi MI A1 has more internal memory than Xiaomi Redmi Note 4. |
| Supported Flash Memory Cards (Expandable Memory) | microSDHC, microSDXC - up to 128 GB | microSDHC, microSDXC - up to 128 GB |
| CAMERA | Xiaomi Redmi Note 4 | Xiaomi MI A1 |
|---|
| MAIN CAMERA |
|---|
| Number of Main Cameras | 1 | 2 | |
|---|---|---|---|
| Sensor Resolution | 13 Megapixel | 12 Megapixel | Xiaomi Redmi Note 4 has better camera resolution than Xiaomi MI A1. |
| Lens Type | - | Wide-angle lens | |
| Lens Aperture | F/2.0 | F/2.2 | Xiaomi Redmi Note 4 has better lens aperture than Xiaomi Redmi Note 4. |
| Lens Construction | 5-element | 5-element | |
| Focus Adjustment | Automatic | Automatic | |
| Optical Zoom | - | 2x | |
| Digital Zoom | - | 10x | |
| Special Effects | - | HDR, Beautify 3.0 | |
| HDR Mode | Auto HDR mode | - | |
| Camera Modes | Burst mode, Panorama | Panorama, Continuous shot, low-light shots | |
| Face Recognition (Face ID) | Face recognition | Face recognition | Both phones have face detection. |
| Light Source | LED light | Dual LED flash | |
| Video Resolutions | 1920 x 1080 (1080p), 1280 x 720 (720p) | 1920 x 1080 (1080p) at 30 fps, 1280 x 720 (720p) at 30 fps, 3840 x 2160 (4K) at 30 fps, Slo-mo video 1280 x 720 (720p) at 120 fps | |
| Camera Features (Functions) | Phase Detect Auto-Focus (PDAF) | Phase Detect Auto-Focus (PDAF), geotagging, Two-tone flash |
| SECOND CAMERA |
|---|
| Sensor Resolution (2nd Camera) | - | 12 Megapixel | |
|---|---|---|---|
| Lens Type (2nd Camera) | - | Telephoto lens | |
| Lens Aperture (2nd Camera) | - | F/2.6 |
| FRONT CAMERA |
|---|
| Number of Front Cameras | 1 | 1 | |
|---|---|---|---|
| Sensor Resolution (Front) | 5 Megapixel | 5 Megapixel | Both phones have the same front camera resolution. |
| Lens Type (Front) | Wide-angle lens | - | |
| Lens Aperture (Front) | F/2.0 | - | |
| Special Effects (Front) | Real-time face beautification | - | |
| Camera Modes (Front) | - | Beautify with 36 smart beauty profiles | |
| Face Recognition (Face ID) | Face recognition | Face recognition | Both phones have face detection. |
| Video Resolutions (Front) | - | 1920 x 1080 (1080p) | |
| Camera Features (Front) | - | Self-timer |
| BATTERY AND CHARGING | Xiaomi Redmi Note 4 | Xiaomi MI A1 |
|---|
| Battery Capacity (Battery Size) | 4100 mAh | 3080 mAh | Xiaomi Redmi Note 4 has larger battery capacity than Xiaomi MI A1. |
|---|---|---|---|
| Battery Technology | - | Lithium Ion |
| CELLULAR | Xiaomi Redmi Note 4 | Xiaomi MI A1 |
|---|
| Technology | CDMA2000 1X / GSM / WCDMA (UMTS) / TD-SCDMA | WCDMA (UMTS) / GSM | |
|---|---|---|---|
| Mobile Broadband Generation | 4G | 4G | Both phones have the same mobile network generation. |
| Operating System | Android 6.0 (Marshmallow) | Google Android | |
| User Interface | MIUI 8 | - | |
| Intelligent Assistant | - | Google Assistant | |
| Navigation | GPS, A-GPS, GLONASS, BeiDou | GPS, A-GPS, GLONASS, BeiDou |
| COMMUNICATIONS | Xiaomi Redmi Note 4 | Xiaomi MI A1 |
|---|
| Data Transmission | GPRS, EDGE, EV-DO, HSDPA, HSUPA, HSPA+, LTE | GPRS, EDGE, HSDPA, HSUPA, HSPA+, VoLTE, FDD-LTE, TDD-LTE | |
|---|---|---|---|
| 2G Band | 850 GSM, 900 GSM, 1800 GSM, 1900 GSM, 800 CDMA2000 1X, 1900 CDMA2000 1X | 850 GSM, 900 GSM, 1800 GSM, 1900 GSM | |
| 3G UMTS Band | - | Band 1, Band 2, Band 5, Band 8 | |
| 3G UMTS Frequency | - | 2100, 1900, 850, 900 | |
| 4G LTE Band | Band 1, Band 3, Band 5, Band 7, Band 8, Band 38, Band 39, Band 40, Band 41 | Band 1, Band 3, Band 4, Band 5, Band 7, Band 8, Band 20, Band 38, Band 40 | |
| 4G LTE Frequency | FDD 2100, FDD 1800+, FDD 850, FDD 2600, FDD 900, TDD 2600, TDD 1900, TDD 2300, TDD 2500 | FDD 2100, FDD 1800+, FDD 1700 - 2110 AWS, FDD 850, FDD 2600, FDD 900, FDD 800 DD, TDD 2600, TDD 2300 | |
| Wireless Interface | IEEE 802.11a/b/g/n/ac | Infrared (IrDA), IEEE 802.11a/b/g/n/ac | |
| Bluetooth | Bluetooth 4.2 | Bluetooth 4.2 | |
| Bluetooth Profiles | HID | HID | |
| Messaging Services | SMS, MMS | SMS, MMS |
| MEDIA | Xiaomi Redmi Note 4 | Xiaomi MI A1 |
|---|
| Supported Digital Audio Standards | WAV, AAC, PCM, AMR, MP3, FLAC, AAC +, eAAC+, APE (Monkey's Audio), DSD | WAV, AAC, PCM, MP3, FLAC, AAC +, eAAC+, AMR-WB, AMR-NB | |
|---|---|---|---|
| Supported Digital Video Standards | MKV, VC-1, XviD, MPEG-4, H.264, M4V, H.265 | MKV, XviD, MPEG-4, M4V | |
| Sound Enhancements | - | Dirac HD Sound |
| FEATURES | Xiaomi Redmi Note 4 | Xiaomi MI A1 |
|---|
| 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, gyro sensor, hall sensor | Accelerometer, ambient light sensor, proximity sensor, gyro sensor, hall sensor | |
| Security Devices | Fingerprint reader | Fingerprint reader | |
| Additional Phone Features | Infrared remote control | Noise suppression by Fortemedia |
| OTHERS | Xiaomi Redmi Note 4 | Xiaomi MI A1 |
|---|
| Included Accessories | Power adapter | Power adapter |
|---|
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