Comparison between:
- Samsung Galaxy A02s
- Xiaomi Redmi Note 5 SD625 India
- Xiaomi Redmi Note 5 SD636 China
Brand and model
Information about the brand, model and model alias (if any) of a specific device.
| Samsung Galaxy A02s | Xiaomi Redmi Note 5 SD625 India | Xiaomi Redmi Note 5 SD636 China | |
 |  |  | |
| Model alias | SM-A025F/DS SM-A025G/DS SM-A025G/DSN SM-A025F SM-A025G SM-A025U1/DS SM-A025V | - | Redmi Note 5 AI Dual Camera |
Design
Information about the dimensions and weight of the device, shown in different measurement units. Body materials, available colors, certifications.
| Width | 75.9 mm 7.59 cm 0.249 ft 2.988 in | 75.45 mm 7.545 cm 0.248 ft 2.97 in | 75.4 mm 7.54 cm 0.247 ft 2.969 in |
| Height | 164.2 mm 16.42 cm 0.539 ft 6.465 in | 158.5 mm 15.85 cm 0.52 ft 6.24 in | 158.6 mm 15.86 cm 0.52 ft 6.244 in |
| Thickness | 9.1 mm 0.91 cm 0.03 ft 0.358 in | 8.05 mm 0.805 cm 0.026 ft 0.317 in | 8.05 mm 0.805 cm 0.026 ft 0.317 in |
| Weight | 196 g 0.43 lbs 6.91 oz | 180 g 0.4 lbs 6.35 oz | 181 g 0.4 lbs 6.38 oz |
| Volume | 113.41 cm³ 6.89 in³ | 96.27 cm³ 5.85 in³ | 96.27 cm³ 5.85 in³ |
| Colors | Black White | Black Gold Blue Rose-gold | Black Gold Blue Rose-gold |
| Body materials | Plastic | Aluminium alloy Plastic | Aluminium alloy |
SIM card
The Subscriber Identity Module (SIM) is used in mobile devices for storing data authenticating the subscribers of mobile services.
| SIM card type | Nano-SIM | Nano-SIM / microSD Micro-SIM | Nano-SIM / microSD Micro-SIM |
| Number of SIM cards | 2 | 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 | GSМ 850 МНz (В5) GSМ 900 МНz (В8) GSМ 1900 МНz (В2) | GSМ 850 МНz GSМ 900 МНz GSМ 1900 МНz | GSМ 850 МНz GSМ 900 МНz GSМ 1900 МНz |
| CDMA | - | - | CDMA 800 MHz |
| W-CDMA | W-CDMA 850 MHz (B5) W-CDMA 900 MHz (B8) W-CDMA 2100 MHz (B1) | W-CDMA 850 MHz W-CDMA 900 MHz W-CDMA 1900 MHz W-CDMA 2100 MHz | W-CDMA 850 MHz W-CDMA 900 MHz W-CDMA 1900 MHz W-CDMA 2100 MHz |
| TD-SCDMA | - | - | TD-SCDMA 1880-1920 MHz TD-SCDMA 2010-2025 MHz |
| LTE | LТЕ-FDD 850 МНz (В5) LТЕ-FDD 900 МНz (В8) LТЕ-FDD 2100 МНz (В1) | LТЕ-ТDD 2300 МНz (В40) LТЕ-ТDD 2500 МНz (В41) LТЕ 850 МНz LТЕ 2100 МНz | LТЕ 850 МНz LТЕ 900 МНz LТЕ 1800 МНz LТЕ 2100 МНz LТЕ 2600 МНz LТЕ-ТDD 1900 МНz (В39) LТЕ-ТDD 2300 МНz (В40) LТЕ-ТDD 2600 МНz (В38) |
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 | UМТS НSРА+ | UМТS GРRS LТЕ Саt 12 | UМТS GРRS LТЕ |
Operating system
Operating system is the system software, which manages and controls the functioning of the hardware components of the device.
| Operating system (OS) | Аndrоid 10 | МΙUΙ V9.2 (Аndrоid 7.1.1 Νоugаt) | МΙUΙ V9.2 (Аndrоid 8.0 Оrео) МΙUΙ (Аndrоid 9.0 Рiе) |
| User interface (UI) | One UI 2.0 | - | - |
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 | Quаlсоmm Snарdrаgоn 450 (SDМ450) | Quаlсоmm Snарdrаgоn 625 (МSМ8953) | Quаlсоmm Snарdrаgоn 636 (SDМ636) |
| Process technology | 14 nm | 14 nm | 14 nm |
| CPU | 8х 1.8 GНz АRМ Соrtех-А53 | 8х 2.0 GНz АRМ Соrtех-А53 | 4х 1.8 GНz АRМ Соrtех-А73, 4х 1.6 GНz АRМ Соrtех-А53 (Κryо 260) |
| CPU bits | 64 bit | 64 bit | 64 bit |
| Instruction set | ARMv8-A | ARMv8-A | ARMv8-A |
| Level 1 cache memory (L1) | 16 KB + 16 KB | 16 KB + 16 KB | 16 KB + 16 KB |
| CPU cores | 8 | 8 | 8 |
| CPU frequency | 1800 MHz | 2000 MHz | 1800 MHz |
| GPU | Qualcomm Adreno 506 | Qualcomm Adreno 506 | Qualcomm Adreno 509 |
| GPU frequency | 600 MHz | 650 MHz | 430 MHz |
| RAM capacity | 3 GB | 3 GB 4 GB | 3 GB 4 GB 6 GB |
| RAM type | LPDDR3 | LPDDR4 | LPDDR4 |
| RAM channels | Single channel | Single channel | Double channel |
| RAM frequency | 833 MHz | 1066 MHz | 1466 MHz |
Storage
Every mobile device has a built-in storage (internal memory) with a fixed capacity.
| Storage | 32 GB | 32 GB 64 GB | 32 GB 64 GB 128 GB |
| eMMC 5.1 | UFS 2.1 | 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 | 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 | TFT | IPS | IPS |
| Diagonal size | 6.5 in 165.1 mm 16.51 cm | 5.99 in 152.15 mm 15.21 cm | 5.99 in 152.15 mm 15.21 cm |
| Width | 2.91 in 73.83 mm 7.38 cm | 2.46 in 62.44 mm 6.24 cm | 2.6 in 65.93 mm 6.59 cm |
| Height | 5.81 in 147.67 mm 14.77 cm | 5.46 in 138.75 mm 13.87 cm | 5.4 in 137.12 mm 13.71 cm |
| Aspect ratio | 2:1 2:1 (18:9) | 2.222:1 | 2.08:1 |
| Resolution | 720 x 1440 pixels | 1080 x 2400 pixels | 1080 x 2246 pixels |
| Pixel density | 248 ppi 97 ppcm | 439 ppi 172 ppcm | 416 ppi 163 ppcm |
| Color depth | 24 bit 16777216 colors | 24 bit 16777216 colors | 24 bit 16777216 colors |
| Display area | 87.77 % | 72.67 % | 75.84 % |
| Other features | Capacitive Multi-touch | Capacitive Multi-touch Scratch resistant | Capacitive Multi-touch Scratch resistant |
| Infinity-V Display | 2.5D curved glass screen 1000:1 contrast ratio 450 cd/m² 84% NTSC | Corning Gorilla Glass 2.5D curved glass screen 1000:1 contrast ratio 450 cd/m² 84% NTSC |
Sensors
Different sensors measure different physical quantities and convert them into signals recognizable by the mobile device.
| Sensors | Proximity Light Accelerometer | Proximity Light Accelerometer Compass Gyroscope Fingerprint | Proximity Light Accelerometer Compass Gyroscope Fingerprint |
| Side-mounted fingerprint sensor | - | - |
Main rear camera
The main camera of the mobile device is usually placed on its back and can be combined with one or more additional cameras.
| Sensor model | - | - | Samsung S5K2L7 |
| Sensor type | CMOS | CMOS BSI | ISOCELL |
| Sensor size | - | 5.11 x 3.84 mm 0.25 in | - |
| Sensor format | 1/3.1" | - | 1/2.56" |
| Pixel size | 1.12 µm 0.001120 mm | 1.278 µm 0.001278 mm | 1.4 µm 0.001400 mm |
| Crop factor | - | 6.77 | - |
| ISO | - | 100 - 1600 | - |
| Aperture | f/2.2 | f/2.2 | f/1.9 |
| Focal length and 35 mm equivalent | 28 mm *(35 mm / full frame) | - | 3.81 mm |
| Flash type | LED | Dual LED | Dual LED |
| Image resolution | 4160 x 3120 pixels 12.98 MP | 4000 x 3000 pixels 12 MP | 4000 x 3000 pixels 12 MP |
| Video resolution | 1920 x 1080 pixels 2.07 MP | 1920 x 1080 pixels 2.07 MP | 1920 x 1080 pixels 2.07 MP |
| Video FPS | 30 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 Macro mode | 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 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) |
| - | - | Phase detection with Dual Pixel Secondary rear camera - 5 MP Sensor model - Samsung S5K5E8 (#2) Sensor type - CMOS BSI (#2) Sensor size - 2.9 x 2.15 mm (#2) Pixel size - 1.12 μm (#2) Aperture size - f/2.0 (#2) |
Macro camera
Specifications of the macro camera of the device. This type of camera in smartphones is used to snap close-up photos of tiny objects.
| Pixel size | 1.75 µm 0.001750 mm | - | - |
| Aperture | f/2.4 | - | - |
| Image resolution | 2 MP | - | - |
Depth-sensing camera
Specifications of the depth sensor of the device. Depth sensors measure the distance between the subject and the camera, enabling features such as bokeh in portraits.
| Pixel size | 1.75 µm 0.001750 mm | - | - |
| Aperture | f/2.4 | - | - |
| Image resolution | 2 MP | - | - |
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 | - | - | OmniVision OV13855 |
| Sensor type | - | CMOS BSI | PureCel |
| Sensor size | - | - | 4.75 x 3.54 mm 0.23 in |
| Pixel size | - | - | 1.045 µm 0.001045 mm |
| Crop factor | - | - | 7.31 |
| Aperture | f/2.2 | f/2 | - |
| Auxiliary light | - | - | LED |
| Image resolution | 2560 x 1920 pixels 4.92 MP | 2592 x 1944 pixels 5.04 MP | 4544 x 2856 pixels 12.98 MP |
| Video resolution | 1280 x 720 pixels 0.92 MP | 1920 x 1080 pixels 2.07 MP | 1920 x 1080 pixels 2.07 MP |
| Video FPS | 30 fps | 30 fps | 30 fps |
| Features | Face unlock | - | Face unlock |
Audio
Information about the type of speakers and the audio technologies supported by the device.
| Speaker | Loudspeaker Earpiece | Loudspeaker Earpiece | Loudspeaker Earpiece |
Radio
The radio in a mobile device is a built-in FM radio receiver.
| Radio | Yes | Yes | Yes |
Tracking/Positioning
Information about the positioning and navigation technologies supported by the device.
| Tracking/Positioning | GРS А-GРS | GРS А-GРS GLОΝАSS | GРS А-GРS GLОΝАSS |
Wi-Fi
Wi-Fi is a technology that provides wireless data connections between various devices within a short range.
| Wi-Fi | 802.11b 802.11g 802.11а | 802.11а 802.11b 802.11g Wi-Fi Disрlаy 802.11а 802.11ас 5GНz | 802.11а 802.11b 802.11g Wi-Fi Disрlаy 802.11а 802.11ас 5GНz |
Bluetooth
Bluetooth is a standard for secure wireless data transfer between different types of devices over short distances.
| Version | 4.2 | 4.2 | 5.0 |
| Features | A2DP LE | A2DP EDR 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 | USB Type-C |
| Version | 2.0 | 2.0 | 2.0 |
| Features | Charging Mass storage | Charging Host Mass storage On-The-Go | Charging Host 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 | Yes |
Connectivity
Information about other important connectivity technologies supported by the devices.
| Connectivity | Computer sync OTA sync Tethering VoLTE | Computer sync OTA sync VoLTE | Computer sync OTA sync Infrared VoLTE |
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 | 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 AMR AMR-WB eAAC+ FLAC M4A MIDI MP3 OGG WMA WAV | AAC AAC+ AMR AMR-WB eAAC+ FLAC MIDI MP3 OGG WMA WAV | AAC AAC+ AMR AMR-WB aptX 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 3GPP2 AVI Flash Video H.263 H.264 H.265 MKV MP4 VC-1 VP8 VP9 WebM WMV WMV7 WMV8 Xvid | 3GPP AVI DivX H.263 H.264 MKV QuickTime MP4 WebM WMV Xvid | 3GPP AVI DivX H.263 H.264 H.265 MKV QuickTime MP4 VC-1 WebM WMV 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 | 5000 mAh | 4000 mAh | 4000 mAh |
| Type | Li-Ion | Li-Polymer | Li-Polymer |
| 2G talk time | - | 22 h 1320 min 0.9 days | 23 h 1380 min 1 days |
| 2G stand-by time | - | 744 h 44640 min 31 days | - |
| 3G talk time | - | 22 h 1320 min 0.9 days | 23 h 1380 min 1 days |
| 3G stand-by time | - | 744 h 44640 min 31 days | - |
| Charger output power | 5 V / 3 A | 5 V / 2 A | 5 V / 2 A |
| Quick charge technology | - | - | Qualcomm Quick Charge 2.0 |
| Features | Fast charging Non-removable | Fast charging Non-removable | Fast charging Non-removable |
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) | 0.85 W/kg | - | 1.54 W/kg |
| Body SAR (EU) | 1.79 W/kg | - | 1.39 W/kg |
| Head SAR (USA) | 1.37 W/kg | 0.441 W/kg | 1.145 W/kg |
| Body SAR (USA) | 1.21 W/kg | 0.315 W/kg | 0.98 W/kg |
| Simultaneous Body SAR (USA) | 1.4 W/kg | - | - |
| Wi-Fi Hotspot SAR | 0.75 W/kg | - | - |
| Simultaneous Wi-Fi SAR | 1.4 W/kg | - | - |
| Samsung Galaxy A02s | Xiaomi Redmi Note 5 SD625 India | Xiaomi Redmi Note 5 SD636 China |
