Comparison between:
- Wiko Y81
- Casper VIA G4
Brand and model
Information about the brand, model and model alias (if any) of a specific device.
| Wiko Y81 | Casper VIA G4 | |
 |  |
Design
Information about the dimensions and weight of the device, shown in different measurement units. Body materials, available colors, certifications.
| Width | 76.1 mm 7.61 cm 0.25 ft 2.996 in | 75.2 mm 7.52 cm 0.247 ft 2.961 in |
| Height | 157.9 mm 15.79 cm 0.518 ft 6.217 in | 156.6 mm 15.66 cm 0.514 ft 6.165 in |
| Thickness | 8.3 mm 0.83 cm 0.027 ft 0.327 in | 8.4 mm 0.84 cm 0.028 ft 0.331 in |
| Weight | - | 163 g 0.36 lbs 5.75 oz |
| Volume | 99.73 cm³ 6.06 in³ | 98.92 cm³ 6.01 in³ |
| Colors | Deep Blue Gold Green | Black Blue |
| Body materials | Plastic Metal | Polycarbonate Glass |
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 |
| Number of SIM cards | 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 (B5) GSM 900 MHz (B8) GSM 1800 MHz (B3) GSM 1900 MHz (B2) | GSM 900 MHz (B8) GSM 1800 MHz (B3) |
| UMTS | UMTS 850 MHz (B5) UMTS 900 MHz (B8) UMTS 1900 MHz (B2) UMTS 2100 MHz (B1) | UMTS 2100 MHz (B1) |
| LTE | 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-FDD 800 MHz (B20) LTE-FDD 900 MHz (B8) LTE-FDD 1800 MHz (B3) LTE-FDD 2100 MHz (B1) LTE-FDD 2600 MHz (B7) |
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 |
Operating system
Operating system is the system software, which manages and controls the functioning of the hardware components of the device.
| Operating system (OS) | Android 10 Go Edition | Android 9.0 Pie |
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 | MediaTek Helio A20 (MT6761D) | MediaTek Helio P22 (MT6762) |
| Process technology | 12 nm | 12 nm |
| CPU | 4x 1.8 GHz ARM Cortex-A53 | 4x 2.0 GHz ARM Cortex-A53, 4x 1.5 GHz ARM Cortex-A53 |
| CPU bits | 64 bit | 64 bit |
| Instruction set | ARMv8-A | ARMv8-A |
| Level 1 cache memory (L1) | 32 KB + 32 KB | - |
| Level 2 cache memory (L2) | 512 KB 0.5 MB | - |
| CPU cores | 4 | 8 |
| CPU frequency | 1800 MHz | 2000 MHz |
| GPU | IMG PowerVR GE8300 | IMG PowerVR GE8320 |
| GPU frequency | 550 MHz | 650 MHz |
| RAM capacity | 2 GB | 3 GB |
| RAM type | LPDDR3 | LPDDR3 |
| RAM channels | Single channel | Single channel |
| RAM frequency | 800 MHz | 933 MHz |
Storage
Every mobile device has a built-in storage (internal memory) with a fixed capacity.
| Storage | 32 GB | 32 GB |
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 | 6.2 in 157.48 mm 15.75 cm | 6.22 in 157.99 mm 15.8 cm |
| Width | 2.65 in 67.42 mm 6.74 cm | 2.66 in 67.63 mm 6.76 cm |
| Height | 5.6 in 142.32 mm 14.23 cm | 5.62 in 142.78 mm 14.28 cm |
| Aspect ratio | 2.111:1 | 2.111:1 |
| Resolution | 720 x 1520 pixels | 720 x 1520 pixels |
| Pixel density | 271 ppi 106 ppcm | 270 ppi 106 ppcm |
| Color depth | 24 bit 16777216 colors | 24 bit 16777216 colors |
| Display area | 80.1 % | 82.26 % |
| Other features | Capacitive Multi-touch | Capacitive Multi-touch Scratch resistant |
| 2.5D curved glass screen | In-cell 2.5D curved glass screen 450 cd/m² |
Sensors
Different sensors measure different physical quantities and convert them into signals recognizable by the mobile device.
| Sensors | Proximity Light Accelerometer Magnetometer | Proximity Light Accelerometer Fingerprint |
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 type | CMOS | - |
| Pixel size | - | 1.12 µm 0.001120 mm |
| Aperture | f/1.8 | f/1.8 |
| Field of view | - | 84 ° |
| Flash type | LED | LED |
| Image resolution | 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 |
| Video FPS | 30 fps | 30 fps |
| Features | Autofocus Digital zoom Geotagging Panorama HDR Touch focus Face detection White balance settings ISO settings Exposure compensation Self-timer Scene mode | Autofocus Continuous shooting Digital zoom Geotagging Panorama HDR Touch focus Face detection White balance settings ISO settings Exposure compensation Self-timer Scene mode |
| 10x digital zoom | Secondary rear camera - 2 MP Pixel size - 1.75 μm (#2) 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.
| Pixel size | - | 1.12 µm 0.001120 mm |
| Aperture | - | f/2 |
| Image resolution | 2560 x 1920 pixels 4.92 MP | - |
| Video resolution | 640 x 480 pixels 0.31 MP | 1920 x 1080 pixels 2.07 MP |
| Video FPS | 30 fps | 30 fps |
| Features | - | Face unlock |
| - | Front camera - 8MP HDR Screen flash |
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 | GPS A-GPS |
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 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 |
| Features | A2DP | A2DP |
USB
The Universal Serial Bus (USB) is an industry standard that allows different electronic devices to exchange data.
| Connector type | Micro USB | Micro USB |
| Version | 2.0 | 2.0 |
| Features | Charging Mass storage | Charging Mass storage |
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 Tethering | Computer sync |
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 AMR MIDI MP3 OGG WMA WAV | AAC AAC+ AMR eAAC+ MIDI MP3 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 MP4 | 3GPP H.264 MP4 |
Battery
The batteries of mobile devices differ in capacity and technology. They provide the electrical charge needed for the functioning of the devices.
| Capacity | 4000 mAh | 3500 mAh |
| Type | Li-Polymer | Li-Polymer |
| 2G talk time | 36 h 24 min 36.4 h 2184 min 1.5 days | 27 h 1620 min 1.1 days |
| 3G talk time | 20 h 1200 min 0.8 days | 27 h 1620 min 1.1 days |
| 3G stand-by time | 580 h 34800 min 24.2 days | - |
| Features | 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) | 0.562 W/kg | - |
| Body SAR (EU) | 1.608 W/kg | - |
| Wiko Y81 | Casper VIA G4 |