Comparison between:
- Vsmart Joy 1
- Vsmart Joy 1+
- Xiaomi Redmi 8A Dual
Brand and model
Information about the brand, model and model alias (if any) of a specific device.
Vsmart Joy 1 | Vsmart Joy 1+ | Xiaomi Redmi 8A Dual | |
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Model alias | Joy1 PQ4001 | Joy1+ Joy 1 Plus Joy1Plus PQ4002 | Redmi 8A Pro M2001C3K3I |
Design
Information about the dimensions and weight of the device, shown in different measurement units. Body materials, available colors, certifications.
Width | 70.94 mm 7.094 cm 0.233 ft 2.793 in | 75.3 mm 7.53 cm 0.247 ft 2.965 in | 75.41 mm 7.541 cm 0.247 ft 2.969 in |
Height | 144.58 mm 14.458 cm 0.474 ft 5.692 in | 156.7 mm 15.67 cm 0.514 ft 6.169 in | 156.48 mm 15.648 cm 0.513 ft 6.161 in |
Thickness | 8.3 mm 0.83 cm 0.027 ft 0.327 in | 8.3 mm 0.83 cm 0.027 ft 0.327 in | 9.4 mm 0.94 cm 0.031 ft 0.37 in |
Weight | 150 g 0.33 lbs 5.29 oz | 155 g 0.34 lbs 5.47 oz | 188 g 0.41 lbs 6.63 oz |
Volume | 85.13 cm³ 5.17 in³ | 97.94 cm³ 5.95 in³ | 110.92 cm³ 6.74 in³ |
Colors | Black White | Black | Midnight Grey Sea Blue Sky White |
Body materials | Plastic | 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 | Nano-SIM Nano-SIM / microSD | Nano-SIM | Nano-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) | 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 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) |
W-CDMA | - | - | W-CDMA 850 MHz (B5) W-CDMA 900 MHz (B8) W-CDMA 1900 MHz (B2) W-CDMA 2100 MHz (B1) |
UMTS | UMTS 900 MHz UMTS 2100 MHz | UMTS 850 MHz UMTS 900 MHz UMTS 1900 MHz UMTS 2100 MHz | - |
LTE | LTE 800 MHz LTE 900 MHz LTE 1800 MHz LTE 2100 MHz LTE 2600 MHz | LTE 800 MHz LTE 850 MHz LTE 900 MHz LTE 1800 MHz LTE 2100 MHz LTE 2600 MHz LTE-TDD 2300 MHz (B40) LTE-TDD 2500 MHz (B41) LTE-TDD 2600 MHz (B38) | LTE-FDD 850 MHz (B5) LTE-FDD 900 MHz (B8) LTE-FDD 1800 MHz (B3) LTE-FDD 2100 MHz (B1) 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 4 | UMTS EDGE GPRS HSPA+ LTE Cat 4 | 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) | VOS (Android 8.1 Oreo) | VOS (Android 8.1 Oreo) | MIUI 10 (Android 9.0 Pie) MIUI 11 (Android 10) |
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 435 (MSM8940) | Qualcomm Snapdragon 430 (MSM8937) | Qualcomm Snapdragon 439 (SDM439) |
Process technology | 28 nm | 28 nm | 12 nm |
CPU | 4x 1.4 GHz ARM Cortex-A53, 4x 1.1 GHz ARM Cortex-A53 | 4x 1.4 GHz ARM Cortex-A53, 4x 1.61 GHz ARM Cortex-A53 | 4x 1.95 GHz ARM Cortex-A53, 4x 1.45 GHz ARM Cortex-A53 |
CPU bits | 64 bit | 64 bit | 64 bit |
Instruction set | ARMv8-A | ARMv8-A | ARMv8-A |
CPU cores | 8 | 8 | 8 |
CPU frequency | 1400 MHz | 1400 MHz | 1950 MHz |
GPU | Qualcomm Adreno 505 | Qualcomm Adreno 505 | Qualcomm Adreno 505 |
GPU frequency | 475 MHz | 450 MHz | 650 MHz |
RAM capacity | 3 GB | 3 GB | 2 GB 3 GB |
RAM type | LPDDR3 | LPDDR3 | LPDDR3 |
RAM channels | Single channel | Single channel | Single channel |
RAM frequency | 800 MHz | 800 MHz | 800 MHz |
Storage
Every mobile device has a built-in storage (internal memory) with a fixed capacity.
Storage | 32 GB | 32 GB | 32 GB |
- | - | 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 | IPS | IPS | IPS |
Diagonal size | 5.45 in 138.43 mm 13.84 cm | 6.18 in 156.97 mm 15.7 cm | 6.22 in 157.91 mm 15.79 cm |
Width | 2.44 in 61.91 mm 6.19 cm | 2.67 in 67.93 mm 6.79 cm | 2.66 in 67.6 mm 6.76 cm |
Height | 4.87 in 123.82 mm 12.38 cm | 5.57 in 141.51 mm 14.15 cm | 5.62 in 142.71 mm 14.27 cm |
Aspect ratio | 2:1 2:1 (18:9) | 2.083:1 | 2.111:1 |
Resolution | 720 x 1440 pixels | 720 x 1500 pixels | 720 x 1520 pixels |
Pixel density | 295 ppi 115 ppcm | 269 ppi 105 ppcm | 271 ppi 106 ppcm |
Color depth | 24 bit 16777216 colors | 24 bit 16777216 colors | 24 bit 16777216 colors |
Display area | 74.98 % | 81.73 % | 82.02 % |
Other features | Capacitive Multi-touch | Capacitive Multi-touch | Capacitive Multi-touch Scratch resistant |
2.5D curved glass screen 450 cd/m² 85% NTSC | 2.5D curved glass screen 450 cd/m² 72% NTSC | In-cell 2.5D curved glass screen Corning Gorilla Glass 5 1500:1 70.8% NTSC |
Sensors
Different sensors measure different physical quantities and convert them into signals recognizable by the mobile device.
Sensors | Proximity Light Accelerometer Fingerprint | Proximity Light Accelerometer Fingerprint | Proximity Light Accelerometer Compass |
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 | Samsung S5K3L6 | Samsung S5K3L8 | - |
Sensor type | ISOCELL | ISOCELL | CMOS |
Sensor size | - | 4.69 x 3.52 mm 0.23 in | - |
Sensor format | 1/3.1" | - | - |
Pixel size | 1.12 µm 0.001120 mm | 1.127 µm 0.001127 mm | - |
Crop factor | - | 7.38 | - |
ISO | 100 - 1600 | 100 - 1600 | - |
Aperture | f/2 | f/2 | f/2.2 |
Shutter speed | 1/2 - 1/6400 | 1/2 - 1/6400 | - |
Number of lenses | 5 | 5 | 6 |
Flash type | LED | LED | Dual LED |
Image resolution | 4160 x 3120 pixels 12.98 MP | 4160 x 3120 pixels 12.98 MP | 4160 x 3120 pixels 12.98 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 RAW 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 RAW 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) |
- | Secondary rear camera - 2 MP | Secondary rear camera - 2 MP (depth-sensing) Aperture size - f/2.4 (#2) |
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 | Hynix Hi-556 | Samsung S5K3P9SP | - |
Sensor type | - | ISOCELL | CMOS |
Sensor format | 1/5" | 1/3.1" | - |
Pixel size | 1.12 µm 0.001120 mm | 1 µm 0.001000 mm | 1.12 µm 0.001120 mm |
Aperture | f/2 | f/2 | f/2 |
Auxiliary light | LED | LED | - |
Image resolution | 2592 x 1944 pixels 5.04 MP | 4608 x 3456 pixels 15.93 MP | 3264 x 2448 pixels 7.99 MP |
Video resolution | 1920 x 1080 pixels 2.07 MP | 1920 x 1080 pixels 2.07 MP | 1280 x 720 pixels 0.92 MP |
Video FPS | 30 fps | 30 fps | - |
Features | Face unlock | 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 |
Smart PA | - | - |
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 | GPS A-GPS GLONASS | GPS A-GPS GLONASS | GPS A-GPS GLONASS |
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 802.11n 802.11n 5GHz 802.11ac Dual band Wi-Fi Hotspot | 802.11b 802.11g 802.11n Wi-Fi Hotspot | 802.11b 802.11g 802.11n Wi-Fi Hotspot Wi-Fi Direct |
Bluetooth
Bluetooth is a standard for secure wireless data transfer between different types of devices over short distances.
Version | 4.2 | 4.2 | 4.2 |
Features | A2DP | A2DP LE | A2DP LE |
USB
The Universal Serial Bus (USB) is an industry standard that allows different electronic devices to exchange data.
Connector type | USB Type-C | Micro USB | USB Type-C |
Version | 2.0 | 2.0 | 2.0 |
Features | Charging Mass storage On-The-Go | Charging Mass storage | 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 | Computer sync OTA sync Tethering | Computer sync OTA sync Tethering 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 aptX eAAC+ FLAC M4A MIDI MP3 OGG WMA WAV | AAC AMR aptX eAAC+ FLAC M4A 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 Flash Video MKV QuickTime MP4 WebM WMV Xvid | 3GPP AVI Flash Video MKV QuickTime MP4 WebM WMV 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 | 3000 mAh | 4000 mAh | 5000 mAh |
Type | Li-Ion | Li-Ion | Li-Polymer |
Charger output power | 5 V / 1 A | 5 V / 1 A | 5 V / 2 A 9 V / 2 A |
Quick charge technology | - | - | Qualcomm Quick Charge 3.0 |
Features | Non-removable | 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) | - | - | 0.236 W/kg |
Body SAR (EU) | - | - | 1.538 W/kg |
Head SAR (India) | - | - | 0.34 W/kg |
Body SAR (India) | - | - | 1 W/kg |
Additional features
Some devices have additional features, different from the standard ones above, but equally important and worth mentioning.
Additional features | - | - | P2i nano-coating |
Vsmart Joy 1 | Vsmart Joy 1+ | Xiaomi Redmi 8A Dual |