Side by side comparison and review of Xiaomi Redmi Note 4x and Samsung Galaxy A51 5G. Compare sizes, cameras, batteries, memory capacities and other key specifications and features to simplify the choice of your perfect phone. Our goal is to make it easier for you to decide on the phone that will best meet your expectations by revealing the main differences between the products.
| DESIGN AND DIMENSIONS | Xiaomi Redmi Note 4x | Samsung Galaxy A51 5G |
|---|
| Product Type | Smartphone | Smartphone | |
|---|---|---|---|
| Manufacturer Model Number | - | SM-A516B/DS | |
| Form Factor | Touch | Touch | |
| Height | 151 mm | 158.9 mm | Samsung Galaxy A51 5G has greater height than Xiaomi Redmi Note 4x. |
| Width | 76 mm | 73.6 mm | Xiaomi Redmi Note 4x has greater width than Samsung Galaxy A51 5G. |
| Depth | 8.45 mm | 8.7 mm | Xiaomi Redmi Note 4x is narrower than Xiaomi Redmi Note 4x. |
| Weight | 165 g | 187 g | Xiaomi Redmi Note 4x is lighter than Xiaomi Redmi Note 4x. |
| Body Colour | Platinum silver grey | Prism cube black | Prism cube white | |
| Body Material | Metal | - | |
| Waterproof (Water-resistant) | - | - | |
| SAR Value | 0.674 W/kg (body), 0.724 W/kg (head) | 1.555 W/kg (body), 0.496 W/kg (head) | |
| 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 | Nano SIM | |
| SIM Card Qty | Dual-SIM | Dual-SIM | |
| SIM Card Configuration Details | Micro SIM + nano SIM/microSD | Nano SIM + nano SIM/microSD |
| DISPLAY | Xiaomi Redmi Note 4x | Samsung Galaxy A51 5G |
|---|
| Display Type | - | OLED display | |
|---|---|---|---|
| Display Technology | - | Infinity-O Super AMOLED | |
| Screen Size (Display Size) | 5.5" | 6.5" | Samsung Galaxy A51 5G has larger screen size than Xiaomi Redmi Note 4x. |
| Screen Resolution (Display Resolution) | 1920 x 1080 pixels | 2400 x 1080 pixels | Samsung Galaxy A51 5G has better screen resolution than Xiaomi Redmi Note 4x. |
| Display Format | Full HD | Full HD+ | |
| Pixel Density | 403 ppi | - | |
| Max Brightness | 450 cd/m² | - | |
| Colour Depth | - | 16.7 million colours | |
| Contrast Ratio | 1000:1 | - | |
| Display Features | 2.5D Glass, Eye protection mode, Colour temperature adjustment | Edge-to-Edge screen |
| PROCESSOR | Xiaomi Redmi Note 4x | Samsung Galaxy A51 5G |
|---|
| Processor Type (CPU) | Qualcomm Snapdragon 625 | - | |
|---|---|---|---|
| Clock Speed | 2 GHz | 2.2 GHz | Samsung Galaxy A51 5G has higher clock speed than Xiaomi Redmi Note 4x. |
| Processor Core Qty | - | 8-core | |
| 64-bit Architecture | - | Yes | Samsung Galaxy A51 5G has 64-bit architecture. |
| Graphics System (GPU) | Qualcomm ADRENO 506 | - |
| MEMORY | Xiaomi Redmi Note 4x | Samsung Galaxy A51 5G |
|---|
| RAM | 3 GB | 6 GB | Samsung Galaxy A51 5G has more RAM than Xiaomi Redmi Note 4x. |
|---|---|---|---|
| Internal Memory Size (Storage Capacity) | 32 GB | 128 GB | Samsung Galaxy A51 5G has more internal memory than Xiaomi Redmi Note 4x. |
| User Memory | - | 105.3 GB | |
| Supported Flash Memory Cards (Expandable Memory) | microSDHC, microSDXC - up to 128 GB | microSDHC, microSDXC - up to 1 TB |
| CAMERA | Xiaomi Redmi Note 4x | Samsung Galaxy A51 5G |
|---|
| MAIN CAMERA |
|---|
| Number of Main Cameras | 1 | 4 | |
|---|---|---|---|
| Sensor Resolution | 13 Megapixel | 48 Megapixel | Samsung Galaxy A51 5G has better camera resolution than Xiaomi Redmi Note 4x. |
| Lens Aperture | F/2.0 | F/2.0 | Both phones have the same camera lens aperture. |
| Lens Construction | 5-element | - | |
| Focus Adjustment | Automatic | Automatic | |
| Digital Zoom | - | 8x | |
| Special Effects | HDR | Bokeh effect | |
| Camera Modes | Burst mode, Panorama, low-light shots | Slow motion video | |
| Face Recognition (Face ID) | Face recognition | - | Xiaomi Redmi Note 4x has face detection. |
| Light Source | Dual LED flash | LED flash | |
| Video Resolutions | 1920 x 1080 (1080p), 1280 x 720 (720p), Slo-mo video 1280 x 720 (720p) at 120 fps | Slo-mo video 1280 x 720 (720p) at 240 fps, 3840 x 2160 (4K) at 30 fps, Slo-mo video 1280 x 720 (720p) at 480 fps | |
| Camera Features (Functions) | Phase Detect Auto-Focus (PDAF) | Live Focus, background blur |
| SECOND CAMERA |
|---|
| Sensor Resolution (2nd Camera) | - | 12 Megapixel | |
|---|---|---|---|
| Lens Type (2nd Camera) | - | Ultra wide-angle lens | |
| Lens Aperture (2nd Camera) | - | F/2.2 | |
| Field of View (2nd Camera) | - | 123 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) | - | 5 Megapixel | |
|---|---|---|---|
| Lens Aperture (4th Camera) | - | F/2.2 | |
| Camera Functions (4th Camera) | - | Depth camera |
| FRONT CAMERA |
|---|
| Number of Front Cameras | 1 | 1 | |
|---|---|---|---|
| Sensor Resolution (Front) | 5 Megapixel | 32 Megapixel | Samsung Galaxy A51 5G has better front camera resolution than Xiaomi Redmi Note 4x. |
| Lens Type (Front) | Wide-angle lens | - | |
| Lens Aperture (Front) | F/2.0 | F/2.2 | Xiaomi Redmi Note 4x has better front lens aperture than Xiaomi Redmi Note 4x. |
| Focus Adjustment | - | Focus free | |
| Camera Modes (Front) | Real time beauty mode, Beautify with 36 smart beauty profiles | - | |
| Face Recognition (Face ID) | Face recognition | - | Xiaomi Redmi Note 4x has face detection. |
| Camera Features (Front) | Selfie countdown | - |
| BATTERY AND CHARGING | Xiaomi Redmi Note 4x | Samsung Galaxy A51 5G |
|---|
| Battery Capacity (Battery Size) | 4100 mAh | 4500 mAh | Samsung Galaxy A51 5G has larger battery capacity than Xiaomi Redmi Note 4x. |
|---|---|---|---|
| Standby Time | 264 hours | - | |
| Talk Time | 3060 minutes | 1380 minutes | Xiaomi Redmi Note 4x has longer battery life when making calls than Samsung Galaxy A51 5G. |
| Run Time Details | Talk (2G): up to 3060 min Playback (video): up to 18 hrs Gaming: up to 15 hrs Standby (4G): up to 264 hrs Playback (audio): up to 162 hrs Reading: up to 22 hrs |
Talk (4G): up to 1380 min Active online usage (LTE): up to 16 hrs Active online usage (Wi-Fi): up to 17 hrs Playback (video): up to 19 hrs Playback (audio): up to 86 hrs |
| CELLULAR | Xiaomi Redmi Note 4x | Samsung Galaxy A51 5G |
|---|
| Technology | CDMA2000 1X / GSM / WCDMA (UMTS) / TD-SCDMA | WCDMA (UMTS) / GSM | |
|---|---|---|---|
| Mobile Broadband Generation | 4G | 5G | Samsung Galaxy A51 5G has more advanced generation mobile network. |
| User Interface | MIUI 8 | - | |
| Intelligent Assistant | - | Bixby | |
| Navigation | GPS, A-GPS, GLONASS, BeiDou | GPS, GLONASS, BeiDou, Galileo |
| COMMUNICATIONS | Xiaomi Redmi Note 4x | Samsung Galaxy A51 5G |
|---|
| Data Transmission | GPRS, EDGE, EV-DO, HSDPA, HSUPA, HSPA+, FDD-LTE, TDD-LTE | GPRS, EDGE, HSDPA, HSUPA, HSPA+, FDD-LTE, TDD-LTE, 5G NR FR1 | |
|---|---|---|---|
| 2G Band | - | 850 GSM, 900 GSM, 1800 GSM, 1900 GSM | |
| 3G UMTS Band | Band 1, Band 2, Band 5, Band 8 | Band 1, Band 2, Band 5, Band 8 | |
| 3G UMTS Frequency | 2100, 1900, 850, 900 | 2100, 1900, 850, 900 | |
| 4G LTE Band | Band 1, Band 3, Band 5, Band 7, Band 38, Band 39, Band 40, Band 41 | Band 1, Band 3, Band 4, Band 5, Band 7, Band 8, Band 12, Band 20, Band 28, Band 38, Band 40, Band 41 | |
| 4G LTE Frequency | FDD 2100, FDD 1800+, FDD 850, FDD 2600, TDD 2600, TDD 1900, TDD 2300, TDD 2500 | FDD 2100, FDD 1800+, FDD 1700 - 2110 AWS, FDD 850, FDD 2600, FDD 900, FDD 700a, FDD 800 DD, FDD 700 APT, TDD 2600, TDD 2300, TDD 2500 | |
| 5G NR Band | - | N41, n78 | |
| 5G NR Frequency | - | TDD TD 2500, TDD TD 3500 | |
| Wireless Interface | Infrared (IrDA), IEEE 802.11b/g/n | IEEE 802.11a/b/g/n/ac, ANT+ | |
| Bluetooth | Bluetooth 4.2 | Bluetooth 5.0 | |
| Bluetooth Profiles | HID | - | |
| NFC | - | Yes | Samsung Galaxy A51 5G has NFC reader for mobile payments. |
| Messaging Services | SMS, MMS | SMS, MMS |
| MEDIA | Xiaomi Redmi Note 4x | Samsung Galaxy A51 5G |
|---|
| Supported Digital Audio Standards | WAV, AAC, PCM, MP3, FLAC, AAC +, eAAC+, APE (Monkey's Audio), DSD, AMR-WB, AMR-NB | WAV, WMA, AAC, AMR, MP3, FLAC, XMF, OGG, MIDI, M4A, MXMF, OGA, 3GA, AWB, IMY, RTTTL, RTX, OTA, MID | |
|---|---|---|---|
| Supported Digital Video Standards | VC-1, XviD, MPEG-4, H.264, M4V, HEVC, H.265, ASP | MKV, FLV, AVI, WMV, ASF, 3GP, M4V, WebM, 3G2, MP4 |
| FEATURES | Xiaomi Redmi Note 4x | Samsung Galaxy A51 5G |
|---|
| Phone Functions | Speakerphone, voice control, call timer, conference call, flight mode, voice dialing, vibrating alert | Speakerphone, voice control, call timer, conference call, flight mode, voice dialing, vibrating alert | |
|---|---|---|---|
| Sensors | Accelerometer, ambient light sensor, gyro sensor, hall sensor, distance sensor | Accelerometer, ambient light sensor, gyro sensor, hall sensor, geomagnetic sensor | |
| Security Devices | - | Fingerprint reader (under display) | |
| Additional Phone Features | Infrared remote control | Fast Charging, Samsung KNOX, Bixby Vision, Bixby Routines, Virtual Proximity Sensing |
| OTHERS | Xiaomi Redmi Note 4x | Samsung Galaxy A51 5G |
|---|
| Included Accessories | USB cable, power adapter, SIM card removal tool | Power adapter |
|---|
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