Comparison between:
- Xiaomi Redmi Note 4X
- Xiaomi Redmi A3
Brand and model
Information about the brand, model and model alias (if any) of a specific device.
| Xiaomi Redmi Note 4X | Xiaomi Redmi A3 | |
 Prices |  | |
| Model alias | Redmi Note 4X Hatsune Miku Special Edition Red Rice Note 4X | - |
Design
Information about the dimensions and weight of the device, shown in different measurement units. Body materials, available colors, certifications.
| Width | 76 mm 7.6 cm 0.249 ft 2.992 in | 76.3 mm 7.63 cm 0.25 ft 3.004 in |
| Height | 151 mm 15.1 cm 0.495 ft 5.945 in | 168.3 mm 16.83 cm 0.552 ft 6.626 in |
| Thickness | 8.45 mm 0.845 cm 0.028 ft 0.333 in | 8.32 mm 0.832 cm 0.027 ft 0.328 in |
| Weight | 165 g 0.36 lbs 5.82 oz | 199 g 0.44 lbs 7.02 oz |
| Volume | 96.97 cm³ 5.89 in³ | 106.84 cm³ 6.49 in³ |
| Colors | Pink Green Champagne Black Silver | Black Green Blue |
| Body materials | Aluminium alloy Plastic | Plastic |
SIM card
The Subscriber Identity Module (SIM) is used in mobile devices for storing data authenticating the subscribers of mobile services.
| SIM card type | Micro-SIM Nano-SIM / microSD | Nano-SIM |
| Number of SIM cards | 2 | 2 |
| Features | - | Dual SIM stand-by (Both cards are active. When one is busy, the other is not active) |
Networks
A mobile (cellular) network is a radio system, which allows a large number of mobile devices to communicate with each other.
| GSM | GSM 850 MHz GSM 900 MHz GSM 1800 MHz GSM 1900 MHz | GSM 850 MHz (B5) GSM 900 MHz (B8) GSM 1800 MHz (B3) GSM 1900 MHz (B2) |
| CDMA | CDMA 800 MHz | - |
| W-CDMA | W-CDMA 850 MHz W-CDMA 900 MHz W-CDMA 1900 MHz W-CDMA 2100 MHz | W-CDMA 850 MHz (B5) W-CDMA 900 MHz (B8) W-CDMA 2100 MHz (B1) |
| TD-SCDMA | TD-SCDMA 1880-1920 MHz TD-SCDMA 2010-2025 MHz | - |
| LTE | LTE-TDD 1900 MHz (B39) LTE-TDD 2300 MHz (B40) LTE-TDD 2500 MHz (B41) LTE-TDD 2600 MHz (B38) LTE 850 MHz LTE 1800 MHz LTE 2100 MHz LTE 2600 MHz | LTE-FDD 700 MHz (B28) LTE-FDD 800 MHz (B20) LTE-FDD 850 MHz (B5) LTE-FDD 900 MHz (B8) LTE-FDD 1800 MHz (B3) LTE-FDD 2100 MHz (B1) LTE-FDD 2600 MHz (B7) LTE-TDD 2300 MHz (B40) LTE-TDD 2500 MHz (B41) |
Mobile network technologies and bandwidth
Communication between devices within mobile networks is realized via various generations of network technologies, which provide different bandwidth.
| Mobile network technologies | UMTS EDGE GPRS HSPA+ LTE Cat 6 EV-DO Rev. A TD-SCDMA TD-HSDPA | UMTS EDGE GPRS HSPA+ LTE EV-DO Rev. A |
Operating system
Operating system is the system software, which manages and controls the functioning of the hardware components of the device.
| Operating system (OS) | MIUI V8.2 (Android 6.0.1 Marshmallow) MIUI V8.x (Android 7.0 Nougat) MIUI V9 MIUI V10 | Android 14 |
System on Chip (SoC)
A system on a chip (SoC) includes into a single chip some of the main hardware components of the mobile device.
| SoC | Qualcomm Snapdragon 625 (MSM8953) | MediaTek Helio G36 |
| Process technology | 14 nm | 12 nm |
| CPU | 8x 2.0 GHz ARM Cortex-A53 | 4x 2.2 GHz ARM Cortex-A53, 4x 1.8 GHz ARM Cortex-A53 |
| CPU bits | 64 bit | 64 bit |
| Instruction set | ARMv8-A | ARMv8-A |
| CPU cores | 8 | 8 |
| CPU frequency | 2000 MHz | 2200 MHz |
| GPU | Qualcomm Adreno 506 | IMG PowerVR GE8320 |
| GPU frequency | 650 MHz | 680 MHz |
| RAM capacity | 3 GB 4 GB | 3 GB 4 GB 6 GB |
| RAM type | LPDDR3 | LPDDR4X |
| RAM channels | Single channel | Double channel |
| RAM frequency | 933 MHz | 1600 MHz |
| - | Virtual RAM expansion |
Storage
Every mobile device has a built-in storage (internal memory) with a fixed capacity.
| Storage | 16 GB 32 GB 64 GB | 64 GB 128 GB |
| eMMC 5.0 | eMMC 5.1 |
Memory cards
Memory cards are used in mobile devices for expanding their external storage capacity.
| Types | microSD microSDHC microSDXC | microSD microSDHC microSDXC |
Display
The display of a mobile device is characterized by its technology, resolution, pixel density, diagonal length, color depth, etc.
| Type/technology | IPS | IPS |
| Diagonal size | 5.5 in 139.7 mm 13.97 cm | 6.71 in 170.43 mm 17.04 cm |
| Width | 2.7 in 68.49 mm 6.85 cm | 2.68 in 68.16 mm 6.82 cm |
| Height | 4.79 in 121.76 mm 12.18 cm | 6.15 in 156.21 mm 15.62 cm |
| Aspect ratio | 1.778:1 16:9 | 2.292:1 |
| Resolution | 1080 x 1920 pixels | 720 x 1650 pixels |
| Pixel density | 401 ppi 157 ppcm | 268 ppi 105 ppcm |
| Color depth | 24 bit 16777216 colors | 24 bit 16777216 colors |
| Display area | 72.9 % | 83.19 % |
| Other features | Capacitive Multi-touch Scratch resistant | Capacitive Multi-touch Scratch resistant |
| Display manufacturer - Boe / Tianma 2.5D curved glass screen 1000:1 contrast ratio 450 cd/m² 72% NTSC | 2.5D curved glass screen Corning Gorilla Glass 3 90 Hz refresh rate 180 Hz touch sampling rate |
Sensors
Different sensors measure different physical quantities and convert them into signals recognizable by the mobile device.
| Sensors | Proximity Light Accelerometer Compass Gyroscope Fingerprint Hall | Accelerometer Fingerprint Virtual Proximity Virtual Light |
| Fingerprint sensor model - Fingerprint Cards FPC1035 / Goodix | Side-mounted fingerprint sensor |
Rear camera
The primary camera of the mobile device is usually placed on its back and can be combined with one or more additional cameras.
| Sensor model | Sony IMX258 Exmor RS | - |
| Sensor type | CMOS | CMOS |
| Sensor size | 4.71 x 3.49 mm 0.23 in | - |
| Pixel size | 1.133 µm 0.001133 mm | - |
| Crop factor | 7.37 | - |
| ISO | 100 - 1600 | - |
| Aperture | f/2 | f/2 |
| Focal length and 35 mm equivalent | 3.57 mm 26.33 mm *(35 mm / full frame) | - |
| Number of lenses | 5 | - |
| Flash type | Dual LED | LED |
| Image resolution | 4160 x 3120 pixels 12.98 MP | 3264 x 2448 pixels 7.99 MP |
| Video resolution | 1920 x 1080 pixels 2.07 MP | 1920 x 1080 pixels 2.07 MP |
| Video FPS | 30 fps | 30 fps |
| Features | Autofocus Continuous shooting Digital zoom Geotagging Panorama HDR Touch focus Face detection White balance settings ISO settings Exposure compensation Self-timer Scene mode Phase detection autofocus (PDAF) | Autofocus Digital zoom Digital image stabilization Geotagging Panorama HDR Touch focus Face detection White balance settings ISO settings Exposure compensation Self-timer Scene mode Macro mode Phase detection autofocus (PDAF) |
| Available also with Samsung S5K3L8 (ISOCELL) 720p @ 120 fps | Secondary rear camera - depth sensor |
Front camera
Modern smartphones have one or more front cameras and their positioning has led to various design concepts – pop-up camera, rotating camera, notch, punch hole, under-display camera, etc.
| Sensor model | Samsung S5K5E8 | - |
| Sensor type | CMOS BSI | CMOS BSI |
| Sensor size | 2.9 x 2.15 mm 0.14 in | - |
| Pixel size | 1.119 µm 0.001119 mm | - |
| Crop factor | 11.99 | - |
| Aperture | f/2 | f/2.2 |
| Focal length and 35 mm equivalent | 2.64 mm 31.63 mm *(35 mm / full frame) | - |
| Field of view | 85 ° | - |
| Image resolution | 2592 x 1944 pixels 5.04 MP | 2560 x 1944 pixels 4.98 MP |
| Video resolution | 1280 x 720 pixels 0.92 MP | 1920 x 1080 pixels 2.07 MP |
| Video FPS | 30 fps | 30 fps |
| Features | - | Face unlock |
Audio
Information about the type of speakers and the audio technologies supported by the device.
| Speaker | Loudspeaker Earpiece | Loudspeaker Earpiece |
Radio
The radio in a mobile device is a built-in FM radio receiver.
| Radio | Yes | Yes |
Tracking/Positioning
Information about the positioning and navigation technologies supported by the device.
| Tracking/Positioning | GPS A-GPS GLONASS BeiDou | GPS A-GPS GLONASS BeiDou Galileo |
Wi-Fi
Wi-Fi is a technology that provides wireless data connections between various devices within a short range.
| Wi-Fi | 802.11a 802.11b 802.11g 802.11n 802.11n 5GHz Dual band Wi-Fi Hotspot Wi-Fi Direct Wi-Fi Display | 802.11a 802.11b 802.11g 802.11n 802.11n 5GHz 802.11ac Dual band Wi-Fi Hotspot Wi-Fi Direct Wi-Fi Display |
Bluetooth
Bluetooth is a standard for secure wireless data transfer between different types of devices over short distances.
| Version | 4.2 | 5.0 |
| Features | A2DP HID LE | A2DP EDR HID LE |
USB
The Universal Serial Bus (USB) is an industry standard that allows different electronic devices to exchange data.
| Connector type | Micro USB | USB Type-C |
| Version | 2.0 | 2.0 |
| Features | Charging Host Mass storage On-The-Go | Charging Mass storage On-The-Go |
Headphone jack
The headphone jack is an audio phone connector, a.k.a. an audio jack. The most widely used one in mobile devices is the 3.5 mm headphone jack.
| Headphone jack | Yes | Yes |
Connectivity
Information about other important connectivity technologies supported by the devices.
| Connectivity | Computer sync OTA sync Infrared Tethering VoLTE | Computer sync OTA sync Infrared Tethering VoLTE VoWiFi |
Browser
A web browser is a software application for accessing, fetching, displaying and navigating through information on the World Wide Web.
| Browser | HTML HTML5 CSS 3 | HTML HTML5 CSS 3 |
Audio file formats/codecs
Mobile devices support various audio file formats and codecs, which respectively store and code/decode digital audio data.
| Audio file formats/codecs | AAC AAC+ AMR AMR-WB eAAC+ FLAC MIDI MP3 OGG WMA WAV | AAC AAC+ AMR AMR-WB eAAC+ FLAC MIDI MP3 OGG WMA WAV |
Video file formats/codecs
Mobile devices support various video file formats and codecs, which respectively store and code/decode digital video data.
| Video file formats/codecs | 3GPP AVI H.263 H.264 H.265 MKV QuickTime VC-1 Xvid | 3GPP AVI DivX H.263 H.264 H.265 MKV MP4 VC-1 Xvid |
Battery
The batteries of mobile devices differ in capacity and technology. They provide the electrical charge needed for the functioning of the devices.
| Capacity | 4100 mAh | 5000 mAh |
| Type | Li-Polymer | Li-Ion |
| 2G talk time | 18 h 1080 min 0.8 days | - |
| 2G stand-by time | 264 h 15840 min 11 days | - |
| 3G talk time | 18 h 1080 min 0.8 days | - |
| 3G stand-by time | 264 h 15840 min 11 days | - |
| Charger output power | 5 V / 2 A | 5 V / 2 A |
| Features | Non-removable | Fast charging Non-removable |
| Battery model: BN43 | - |
Specific Absorption Rate (SAR)
The SAR rating shows the amount of electromagnetic radiation absorbed by the human body when using a mobile device, expressed in W/kg.
| Head SAR (EU) | 0.724 W/kg | 0.897 W/kg |
| Body SAR (EU) | 0.674 W/kg | 0.997 W/kg |
| Head SAR (USA) | 0.85 W/kg | - |
| Body SAR (USA) | 0.69 W/kg | - |
| Xiaomi Redmi Note 4X | Xiaomi Redmi A3 |