Side by side comparison and review of Lenovo S820 and Xiaomi Redmi 4X. 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 | Lenovo S820 | Xiaomi Redmi 4X |
|---|
| Product Type | Smartphone | Smartphone | |
|---|---|---|---|
| Form Factor | Touch | Touch | |
| Height | 139.5 mm | 139.24 mm | Lenovo S820 has greater height than Xiaomi Redmi 4X. |
| Width | 69.7 mm | 69.96 mm | Xiaomi Redmi 4X has greater width than Lenovo S820. |
| Depth | 9 mm | 8.65 mm | Xiaomi Redmi 4X is narrower than Lenovo S820. |
| Weight | 143 g | 146 g | Lenovo S820 is lighter than Lenovo S820. |
| Body Colour | Flamingo red | Black | |
| Body Material | - | Metal | |
| Waterproof (Water-resistant) | - | - | |
| SAR Value | 0.572 W/kg (body) | 1.5 W/kg (body), 0.583 W/kg (head) | |
| Integrated Components | FM radio | - | |
| Connector Type | Headset jack - mini-phone 3.5mm Micro-USB - 5 pin Micro-USB Type B |
Micro-USB - 5 pin Micro-USB Type B Headset jack - mini-phone 3.5mm |
|
| SIM Card Type (Size) | Micro SIM | Micro SIM, nano SIM | |
| SIM Card Qty | Dual-SIM | Dual-SIM | |
| SIM Card Configuration Details | - | Micro SIM + nano SIM/microSD |
| DISPLAY | Lenovo S820 | Xiaomi Redmi 4X |
|---|
| Display Type | LCD display | - | |
|---|---|---|---|
| Display Technology | IPS | - | |
| Screen Size (Display Size) | 4.7" | 5" | Xiaomi Redmi 4X has larger screen size than Lenovo S820. |
| Screen Resolution (Display Resolution) | 1280 x 720 pixels | 1280 x 720 pixels | Both phones have the same screen resolution. |
| Display Format | HD | HD | |
| Pixel Density | 312 ppi | - | |
| Max Brightness | - | 450 cd/m² | |
| Colour Depth | 16.7 million colours | - | |
| Contrast Ratio | - | 1000:1 | |
| Display Features | - | 2.5D Glass, Night Display, Reading mode, Colour temperature adjustment | |
| Display Protection (Screen Protector) | Corning Gorilla Glass (scratch resistant glass) | Corning Gorilla Glass (scratch resistant glass) |
| PROCESSOR | Lenovo S820 | Xiaomi Redmi 4X |
|---|
| Processor Type (CPU) | MediaTek | Qualcomm Snapdragon 435 | |
|---|---|---|---|
| Processor Number | MT6589 | - | |
| Clock Speed | 1.2 GHz | 1.4 GHz | Xiaomi Redmi 4X has higher clock speed than Lenovo S820. |
| Processor Core Qty | Quad-core | 8-core | Xiaomi Redmi 4X has higher processor core quantity than Lenovo S820. |
| 64-bit Architecture | - | Yes | Xiaomi Redmi 4X has 64-bit architecture. |
| Graphics System (GPU) | PowerVR SGX544 | Qualcomm ADRENO 505 |
| MEMORY | Lenovo S820 | Xiaomi Redmi 4X |
|---|
| RAM | 1 GB | 3 GB | Xiaomi Redmi 4X has more RAM than Lenovo S820. |
|---|---|---|---|
| Internal Memory Size (Storage Capacity) | 4 GB | 32 GB | Xiaomi Redmi 4X has more internal memory than Lenovo S820. |
| Supported Flash Memory Cards (Expandable Memory) | microSDHC - up to 32 GB | microSDHC, microSDXC - up to 128 GB |
| CAMERA | Lenovo S820 | Xiaomi Redmi 4X |
|---|
| MAIN CAMERA |
|---|
| Number of Main Cameras | 1 | 1 | |
|---|---|---|---|
| Sensor Resolution | 12 Megapixel | 13 Megapixel | Xiaomi Redmi 4X has better camera resolution than Lenovo S820. |
| Lens Aperture | - | F/2.0 | |
| Lens Construction | - | 5-element | |
| Focus Adjustment | Automatic | Automatic | |
| Special Effects | - | HDR | |
| Camera Modes | - | Burst mode, Panorama | |
| Face Recognition (Face ID) | Face detection | Face recognition | Both phones have face detection. |
| Light Source | LED light | LED light | |
| Video Resolutions | - | 1920 x 1080 (1080p) at 30 fps, 1280 x 720 (720p) at 30 fps | |
| Camera Features (Functions) | - | Phase Detect Auto-Focus (PDAF) |
| FRONT CAMERA |
|---|
| Number of Front Cameras | 1 | 1 | |
|---|---|---|---|
| Sensor Resolution (Front) | 2 Megapixel | 5 Megapixel | Xiaomi Redmi 4X has better front camera resolution than Lenovo S820. |
| Lens Aperture (Front) | - | F/2.2 | |
| Camera Modes (Front) | - | Beautify Selfie mode | |
| Face Recognition (Face ID) | - | Face recognition | Xiaomi Redmi 4X has face detection. |
| BATTERY AND CHARGING | Lenovo S820 | Xiaomi Redmi 4X |
|---|
| Battery Capacity (Battery Size) | 2000 mAh | 4100 mAh | Xiaomi Redmi 4X has larger battery capacity than Lenovo S820. |
|---|---|---|---|
| Standby Time | 140 hours | 432 hours | Xiaomi Redmi 4X has longer standby time than Lenovo S820. |
| Talk Time | 1320 minutes | 2160 minutes | Xiaomi Redmi 4X has longer battery life when making calls than Lenovo S820. |
| Run Time Details | Talk (GSM): up to 1320 min Talk (WCDMA): up to 600 min Standby (GSM): up to 140 hrs Standby (WCDMA): up to 140 hrs |
Talk: up to 2160 min Playback (video): up to 15 hrs Gaming: up to 13 hrs Standby (LTE): up to 432 hrs Playback (audio): up to 87 hrs Reading: up to 26 hrs Navigation: up to 15 hrs |
|
| Battery Technology | Lithium polymer | - |
| CELLULAR | Lenovo S820 | Xiaomi Redmi 4X |
|---|
| Technology | WCDMA (UMTS) / GSM | WCDMA (UMTS) / GSM | |
|---|---|---|---|
| Mobile Broadband Generation | 3G | 4G | Xiaomi Redmi 4X has more advanced generation mobile network. |
| Operating System | Android 4.2 (Jelly Bean) | - | |
| User Interface | - | MIUI 8 | |
| Navigation | GPS, A-GPS | GPS, A-GPS, GLONASS, BeiDou |
| COMMUNICATIONS | Lenovo S820 | Xiaomi Redmi 4X |
|---|
| Data Transmission | GPRS, EDGE, HSDPA, HSUPA, HSPA+ | GPRS, EDGE, HSDPA, HSUPA, HSPA+, FDD-LTE, TDD-LTE | |
|---|---|---|---|
| 2G Band | 900 GSM, 1800 GSM, 1900 GSM | 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 4, Band 5, Band 7, Band 8, Band 20, Band 38, Band 40 | |
| 4G LTE Frequency | - | 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 | Infrared (IrDA), IEEE 802.11b/g/n | |
| Bluetooth | Bluetooth 3.0 | Bluetooth 4.1 | |
| Bluetooth Profiles | A2DP | HID | |
| Messaging Services | SMS, MMS | SMS, MMS |
| MEDIA | Lenovo S820 | Xiaomi Redmi 4X |
|---|
| Supported Digital Audio Standards | WAV, WMA, MP3, eAAC+ | WAV, AAC, PCM, AMR, MP3, FLAC, AAC +, eAAC+, APE (Monkey's Audio), DSD, AMR-WB, AMR-NB | |
|---|---|---|---|
| Supported Digital Video Standards | MPEG-4, WMV, H.264 | MKV, VC-1, XviD, MPEG-4, H.264, M4V, HEVC, H.265 |
| FEATURES | Lenovo S820 | Xiaomi Redmi 4X |
|---|
| Phone Functions | Speakerphone, call timer, conference call, vibrating alert | Speakerphone, voice control, call timer, conference call, flight mode, voice dialing, vibrating alert | |
|---|---|---|---|
| Sensors | Accelerometer, proximity sensor | Accelerometer, ambient light sensor, proximity sensor, gyro sensor | |
| Security Devices | - | Fingerprint reader | |
| Additional Phone Features | Active noise-cancellation | Infrared remote control |
| OTHERS | Lenovo S820 | Xiaomi Redmi 4X |
|---|
| Included Accessories | USB cable, power adapter | USB cable, power adapter, SIM card removal tool |
|---|
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