Design
Weight
We consider a lower weight better because lighter devices are more comfortable to carry. A lower weight is also an advantage for home appliances, as it makes transportation easier, and for many other types of products.
- Oppo A33 (2020) 186
-
- Oukitel C57 Pro 215
-
Thickness
The thickness (or depth) of the product.
- Oppo A33 (2020) 8.4
-
- Oukitel C57 Pro 9.4
-
Width
The width represents the horizontal dimension of the product.
- Oppo A33 (2020) 75.1
-
- Oukitel C57 Pro 76.6
-
Height
The height represents the vertical dimension of the product.
- Oppo A33 (2020) 163.9
-
- Oukitel C57 Pro 165.8
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Weather-sealed (splashproof)
The device is protected with extra seals to prevent failures caused by dust, raindrops, and water splashes.
- Oppo A33 (2020)
- Oukitel C57 Pro none
Volume
Volume is the quantity of three-dimensional space enclosed by the product's chassis or, in simpler terms, the space the product occupies.
- Oppo A33 (2020) 103.394676
-
- Oukitel C57 Pro 119.382632
-
Is dustproof and water-resistant
The device is dustproof and water-resistant. Water-resistant devices can resist the penetration of water, such as powerful water jets, but not being submerged into water.
- Oppo A33 (2020)
- Oukitel C57 Pro
Can be folded
Foldable devices are easier to transport and take up less storage space.
- Oppo A33 (2020)
- Oukitel C57 Pro
Has a physical QWERTY keyboard
Text messaging is much faster due to a hardware keyboard.
- Oppo A33 (2020) null
-
- Oukitel C57 Pro null
-
Display
Screen size
The bigger the screen size is, the better the user experience.
- Oppo A33 (2020) 6.5
-
- Oukitel C57 Pro 6.52
-
Display type
The type of technology used in the display.
- Oppo A33 (2020) ips, lcd
- Oukitel C57 Pro lcd, ips
Pixel density
Pixel density is a measurement of a screen's resolution, expressed as the number of pixels per inch (PPI) on the screen. A higher pixel density translates into more clarity and sharpness for the images rendered on the screen, thus improving the quality of the viewing experience.
- Oppo A33 (2020) 270
-
- Oukitel C57 Pro 215
-
Resolution
Resolution is an essential indicator of a screen's image quality, representing the maximum amount of pixels that can be shown on the screen. The resolution is given as a compound value, comprised of horizontal and vertical pixels.
- Oppo A33 (2020) 720 x 1600
-
- Oukitel C57 Pro 576 x 1280
-
Refresh rate
The frequency at which the screen is refreshed. Higher frequency results in less flickering (less noise) and more natural movement representation in action-intense scenes.
- Oppo A33 (2020) 90
-
- Oukitel C57 Pro null
-
Gorilla Glass version
Gorilla Glass is one of the most popular brands of chemically strengthened glass, manufactured by Corning. Several versions have been developed, the newer ones being more durable and providing better damage resistance.
- Oppo A33 (2020) gorilla_glass_3
- Oukitel C57 Pro gorilla_glass_5
Supports HDR10
HDR10 is an HDR (high dynamic range) video technology. Compared to standard dynamic range (SDR) video, HDR10 video has greater contrast and color depth, resulting in more realistic images.
- Oppo A33 (2020)
- Oukitel C57 Pro
Supports HDR10+
HDR10+ is an improved version of HDR10 video technology. HDR10+ uses dynamic metadata so that each frame can have its own settings for contrast, brightness, and colors, which results in lifelike images.
- Oppo A33 (2020)
- Oukitel C57 Pro
Always-On Display
The user can see information such as date, time, and notifications even when the screen is off. The functionality can be enabled or disabled.
- Oppo A33 (2020)
- Oukitel C57 Pro
Supports Dolby Vision
Dolby Vision is an HDR format that supports greater color depth and brightness than HDR10/HDR10+. It uses dynamic metadata so that each frame can have its own settings for contrast, brightness, and colors, which results in lifelike images.
- Oppo A33 (2020)
- Oukitel C57 Pro
Has a curved display
A curved screen is designed to better fill a user's field of vision, giving the viewer a sense of being immersed in the image. As our eyes have a natural curvature, these displays can also help to reduce eye strain.
- Oppo A33 (2020)
- Oukitel C57 Pro
Displays 3D
The device can display 3D images without the need for wearing special glasses. The display's special construction allows viewers to get a sense of an image's depth by tailoring its position to fit the user's perspective.
- Oppo A33 (2020)
- Oukitel C57 Pro
Has a secondary screen
A secondary screen complements the main screen, offering an enhanced and improved user experience.
- Oppo A33 (2020)
- Oukitel C57 Pro
Performance
Internal storage
The internal storage refers to the built-in storage space available in a device for system data, apps, and user-generated data. With a large amount of internal storage, you can save more files and apps on your device.
- Oppo A33 (2020) 32
-
- Oukitel C57 Pro 128
-
RAM
Random-access memory (RAM) is a form of volatile memory used to store working data and machine code currently in use. It is a quick-access, temporary virtual storage that can be read and changed in any order, thus enabling fast data processing.
- Oppo A33 (2020) 3
-
- Oukitel C57 Pro 4
-
Android version
A newer version of Android generally provides a better user experience. Major Android releases include new features and improvements to performance, as well as important security updates.
- Oppo A33 (2020) null
-
- Oukitel C57 Pro null
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AnTuTu benchmark score
AnTuTu is one of the most important benchmarks for Android devices. The score reflects the overall performance of a device by summing up results of individual tests that various parameters, such as RAM speed, CPU performance, 2D & 3D graphics performance.
- Oppo A33 (2020) null
-
- Oukitel C57 Pro null
-
3DMark Wild Life benchmark
Wild Life is a cross-platform benchmark developed by 3DMark that tests the graphical performance of a device (using the Vulkan API on Android/Windows and the Metal API on iOS). Source: 3DMark.
- Oppo A33 (2020) 242
-
- Oukitel C57 Pro null
-
Geekbench 5 result (multi)
Geekbench 5 is a cross-platform benchmark that measures a processor's multi-core performance. (Source: Primate Labs, 2023)
- Oppo A33 (2020) 1759
-
- Oukitel C57 Pro null
-
Geekbench 5 result (single)
Geekbench 5 is a cross-platform benchmark that measures a processor's single-core performance. (Source: Primate Labs, 2023)
- Oppo A33 (2020) 576
-
- Oukitel C57 Pro null
-
CPU speed
The CPU speed indicates how many processing cycles per second can be executed by a CPU, considering all of its cores (processing units). It is calculated by adding the clock rates of each core or, in the case of multi-core processors employing different microarchitectures, of each group of cores.
- Oppo A33 (2020) 4 x 1.8 & 4 x 1.8
-
- Oukitel C57 Pro null
-
Has an external memory slot
The device has a standard memory slot (such as an SD or micro SD card slot) that enables you to extend the built-in internal storage with affordable memory modules, or easily retrieve data, such as photographs, from the memory card.
- Oppo A33 (2020) null
-
- Oukitel C57 Pro 2956
-
GPU clock speed
The graphics processing unit (GPU) has a higher clock speed.
- Oppo A33 (2020) 650
-
- Oukitel C57 Pro 901
-
Has integrated LTE
The system on a chip (SoC) has an integrated LTE cellular chip. LTE is capable of downloading at faster speeds than older, 3G technology.
- Oppo A33 (2020) null
-
- Oukitel C57 Pro 4 x 1.6 & 4 x 1.2
-
RAM speed
It can support faster memory, which will give quicker system performance.
- Oppo A33 (2020) 1866
-
- Oukitel C57 Pro null
-
Semiconductor size
Small semiconductors provide better performance and reduced power consumption. Chipsets with a higher number of transistors, semiconductor components of electronic devices, offer more computational power. A small form factor allows more transistors to fit on a chip, therefore increasing its performance.
- Oppo A33 (2020) 11
-
- Oukitel C57 Pro 550
-
DirectX version
DirectX is used in video games, with newer versions supporting better graphics and features. The latest version is DirectX 12 Ultimate, which includes support for ray tracing, mesh shaders, and variable rate shading (VRS).
- Oppo A33 (2020) null
-
- Oukitel C57 Pro 933
-
Has integrated graphics
With integrated graphics you don’t need to buy a separate graphics card.
- Oppo A33 (2020) null
-
- Oukitel C57 Pro 28
-
OpenGL version
OpenGL is used in games, with newer versions supporting better graphics.
- Oppo A33 (2020) null
-
- Oukitel C57 Pro null
-
Geekbench result
This is a cross-platform benchmark that measures the performance of the CPU. (Source: Primate Labs, 2023)
- Oppo A33 (2020) null
-
- Oukitel C57 Pro null
-
OpenGL ES version
OpenGL ES is used for games on mobile devices such as smartphones. Newer versions support better graphics.
- Oppo A33 (2020) 3.2
-
- Oukitel C57 Pro null
-
Uses big.LITTLE technology
Using big.LITTLE technology, a chip can switch between two sets of processor cores to maximize performance and battery life. For example, when playing a game the more powerful cores will be used to increase performance, whereas checking email will use the less powerful cores to maximize battery life.
- Oppo A33 (2020) null
-
- Oukitel C57 Pro null
-
CPU threads
More threads result in faster performance and better multitasking.
- Oppo A33 (2020) 8
-
- Oukitel C57 Pro null
-
Maximum amount of external memory supported
The maximum amount of external storage memory supported by the the device.
- Oppo A33 (2020) 128
-
- Oukitel C57 Pro 3.2
-
Floating-point performance
Floating-point performance is a measurement of the raw processing power of the GPU.
- Oppo A33 (2020) null
-
- Oukitel C57 Pro null
-
Has NX bit
NX bit helps protect the computer from malicious attacks.
- Oppo A33 (2020) null
-
- Oukitel C57 Pro 8
-
Has TrustZone
A technology integrated into the processor to secure the device for use with features such as mobile payments and streaming video using digital rights management (DRM).
- Oppo A33 (2020) null
-
- Oukitel C57 Pro null
-
Maximum memory bandwidth
This is the maximum rate that data can be read from or stored into memory.
- Oppo A33 (2020) 13.91
-
- Oukitel C57 Pro null
-
OpenVG version
OpenVG is used to improve the rendering of 2D graphics on mobile devices, for example the user interface (UI) on a smartphone.
- Oppo A33 (2020) null
-
- Oukitel C57 Pro 7.464
-
OpenCL version
Some apps use OpenCL to apply the power of the graphics processing unit (GPU) for non-graphical computing. Newer versions introduce more functionality and better performance.
- Oppo A33 (2020) 2
-
- Oukitel C57 Pro null
-
Bits executed at a time
NEON provides acceleration for media processing, such as listening to MP3s.
- Oppo A33 (2020) 128
-
- Oukitel C57 Pro null
-
Memory channels
More memory channels increases the speed of data transfer between the memory and the CPU.
- Oppo A33 (2020) 2
-
- Oukitel C57 Pro null
-
VFP version
Vector Floating-Point (VFP) is used by the processor to deliver increased performance in areas such as digital imaging.
- Oppo A33 (2020) 4
-
- Oukitel C57 Pro 2
-
EMMC version
A higher version of eMMC allows faster memory interfaces, having a positive effect on the performance of a device. For example, when transferring files from your computer to the internal storage over USB.
- Oppo A33 (2020) null
-
- Oukitel C57 Pro 2
-
L1 cache
A larger L1 cache results in faster CPU and system-wide performance.
- Oppo A33 (2020) 64
-
- Oukitel C57 Pro null
-
Maximum memory amount
The maximum amount of memory (RAM) supported.
- Oppo A33 (2020) 8
-
- Oukitel C57 Pro 5.1
-
GPU execution units
A graphics processing unit (GPU) with a greater number of execution units can deliver better graphics.
- Oppo A33 (2020) null
-
- Oukitel C57 Pro 6
-
GPU turbo
When the GPU is running below its limitations, it can boost to a higher clock speed in order to give increased performance.
- Oppo A33 (2020) 600
-
- Oukitel C57 Pro null
-
PassMark result
This benchmark measures the performance of the CPU using multiple threads.
- Oppo A33 (2020) 1868
-
- Oukitel C57 Pro 4
-
Number of transistors
A higher transistor count generally indicates a newer, more powerful processor.
- Oppo A33 (2020) null
-
- Oukitel C57 Pro 800
-
Bus transfer rate
The bus is responsible for transferring data between different components of a computer or device.
- Oppo A33 (2020) null
-
- Oukitel C57 Pro 1327
-
Thermal Design Power (TDP)
The thermal design power (TDP) is the maximum amount of power the cooling system needs to dissipate. A lower TDP typically means that it consumes less power.
- Oppo A33 (2020) 3
-
- Oukitel C57 Pro null
-
DDR memory version
DDR (Double Data Rate) memory is the most common type of RAM. Newer versions of DDR memory support higher maximum speeds and are more energy-efficient.
- Oppo A33 (2020) 4
-
- Oukitel C57 Pro null
-
L3 core
More data can be stored in the L3 cache for access by each core of the CPU.
- Oppo A33 (2020) null
-
- Oukitel C57 Pro 3
-
PassMark result (overclocked)
This benchmark measures the performance of the CPU when it is overclocked.
- Oppo A33 (2020) null
-
- Oukitel C57 Pro 4
-
PassMark result (single)
This benchmark measures the performance of the CPU using a single thread.
- Oppo A33 (2020) 755
-
- Oukitel C57 Pro null
-
Shading units
Shading units (or stream processors) are small processors within the graphics card that are responsible for processing different aspects of the image.
- Oppo A33 (2020) null
-
- Oukitel C57 Pro 478
-
Has an unlocked multiplier
Some processors come with an unlocked multiplier which makes them easy to overclock, allowing you to gain increased performance in games and other apps.
- Oppo A33 (2020) null
-
- Oukitel C57 Pro 128
-
Cameras
Megapixels (main camera)
The number of megapixels determines the resolution of the images captured with the main camera. A higher megapixel count means that the camera is capable of capturing more details. However, the megapixel count is not the only important element determining the quality of an image.
- Oppo A33 (2020) 16 & 2 & 2
-
- Oukitel C57 Pro 13
-
Megapixels (front camera)
The number of megapixels determines the resolution of the images captured with the front camera. A higher megapixel count means that the front camera is capable of capturing more details, an essential factor for taking high-resolution selfies.
- Oppo A33 (2020) 8
-
- Oukitel C57 Pro 5
-
Wide aperture (main camera)
With a wider aperture the sensor can capture more light, helping to avoid blur by enabling a faster shutter speed. It also provides a shallow depth of field, allowing you to blur the background to focus attention on the subject.
- Oppo A33 (2020) null
-
- Oukitel C57 Pro 2.2
-
Has continuous autofocus when recording movies
When recording movies they stay focussed and sharp.
- Oppo A33 (2020)
- Oukitel C57 Pro
Supports slow-motion video recording
Slow-motion is an artistic video effect that makes time seem to go slower. It is achieved by recording a video at a higher frame-rate than the standard playback rate of 24fps or 30fps. Depending on camera capabilities, frame rates for slow-motion videos vary between 60fps and 960fps.
- Oppo A33 (2020)
- Oukitel C57 Pro
Has manual exposure
This allows you to manually set the exposure.
- Oppo A33 (2020)
- Oukitel C57 Pro
Has a dual-lens (or multi-lens) main camera
A multi-lens camera captures two or more images and overlays them. This technology creates sharper images, especially in low light conditions, and allows you to use effects such as softening the background.
- Oppo A33 (2020)
- Oukitel C57 Pro
Number of flash LEDs
Multi-LED camera flashes use LED lights which have different color temperatures (warm light and cool light), improving the color balance based on the conditions in which the photos are taken.
- Oppo A33 (2020) 1
-
- Oukitel C57 Pro null
-
Shoots 360° panorama
It allows you to shoot a panorama 360° in every direction, by stitching together multiple shots that you take while turning on the spot. This creates a spherical 360° panorama, which allows you to look around in all directions instead of just horizontally.
- Oppo A33 (2020)
- Oukitel C57 Pro
Wide aperture (front camera)
With a wider aperture, the sensor can capture more light, helping to avoid blur by enabling a faster shutter speed. It also provides a shallow depth of field, allowing you to blur the background and focus attention on the subject.
- Oppo A33 (2020) 2
-
- Oukitel C57 Pro 2.2
-
Has timelapse function
A timelapse shows a long passage of time sped up. A series of photographs taken from the same position over a long period is joined together to create a short video. It is great way to capture things like the setting sun, or clouds moving across the sky.
- Oppo A33 (2020)
- Oukitel C57 Pro
Supports HDR10 recording
The camera can record in HDR10, which is an HDR (high dynamic range) video technology. Compared to standard dynamic range (SDR) video, HDR10 video has greater contrast and color depth, resulting in more realistic images.
- Oppo A33 (2020)
- Oukitel C57 Pro
Supports Dolby Vision recording
The camera can record in Dolby Vision, which is an HDR format that supports greater color depth and brightness than HDR10/HDR10+. It uses dynamic metadata so that each frame can have its own settings for contrast, brightness, and colors, which results in lifelike images.
- Oppo A33 (2020)
- Oukitel C57 Pro
Has a front-facing camera under the display
A special part of the screen allows light to reach the camera, while software matches the brightness and color of the display with the captured image. This technology allows for a truly edge-to-edge display with no camera notch or hole-punch.
- Oppo A33 (2020)
- Oukitel C57 Pro
Has 3D photo/video recording capabilities
The device captures 3D still photos and/or 3D videos due to two separate lenses.
- Oppo A33 (2020)
- Oukitel C57 Pro
Operating system
Has clipboard warnings
This privacy feature alerts you with a small notification when an app copies data from your clipboard.
- Oppo A33 (2020)
- Oukitel C57 Pro android_14
Has location privacy options
This privacy feature allows you to share your approximate location with an app instead of your precise location.
- Oppo A33 (2020)
- Oukitel C57 Pro
Has camera/microphone privacy options
You can enable or disable an app’s access to the camera or microphone on your device. There are also indication icons to show you when an app uses the camera or microphone.
- Oppo A33 (2020)
- Oukitel C57 Pro
Has Mail Privacy Protection
Mail Privacy Protection is a feature built into the default email app that blocks senders from using “tracking pixels” to see when you’ve read an email. It also hides your IP address from senders.
- Oppo A33 (2020)
- Oukitel C57 Pro
Has theme customization
Theme customization allows you to easily change the appearance of the user interface (UI). For example, by changing the system colors or the app icons.
- Oppo A33 (2020)
- Oukitel C57 Pro
Can block app tracking
Some apps track your activity even when the app is not in use. This privacy feature allows you to block this tracking, either across all apps or on a per-app basis.
- Oppo A33 (2020)
- Oukitel C57 Pro
Has on-device machine learning
On-device machine learning is used to recognize people, places, and more in the Photos app. The algorithms run on the device, where this sensitive data is then kept. Competing services upload the photos and perform this on their servers, which requires the sharing of personal data.
- Oppo A33 (2020)
- Oukitel C57 Pro
Has Wi-Fi password sharing
Wi-Fi passwords can be shared automatically between devices (if you are signed in to iCloud on both devices).
- Oppo A33 (2020)
- Oukitel C57 Pro
Has battery health check
Advanced battery information is available, such as the remaining capacity and whether it needs to be replaced.
- Oppo A33 (2020)
- Oukitel C57 Pro
Has an extra dim mode
Extra dim mode darkens the screen beyond the lowest standard brightness setting of the device by adding a filter to the image.
- Oppo A33 (2020)
- Oukitel C57 Pro
Has dynamic theming
Dynamic theming takes the colors from your wallpaper and uses these to customize the colors of the device’s user interface (UI) and apps that support the feature.
- Oppo A33 (2020)
- Oukitel C57 Pro
Can offload apps
You can offload apps to free up storage space. This feature removes the data of an app, but keeps the settings intact so that if you reinstall the app at a later time, it will be just how it was before.
- Oppo A33 (2020)
- Oukitel C57 Pro
Has Live Text
Live Text is an iOS feature that recognizes text in images and allows you to perform actions, such as copying it to the clipboard or translating it into another language.
- Oppo A33 (2020)
- Oukitel C57 Pro
Has SharePlay
- Oppo A33 (2020)
- Oukitel C57 Pro
Supports split screen
Split screen allows you to use two apps side-by-side.
- Oppo A33 (2020)
- Oukitel C57 Pro
Gets direct OS updates
The device receives operating system updates directly from the developer, so you don't need to wait for the manufacturer to release an update.
- Oppo A33 (2020)
- Oukitel C57 Pro
Supports instant markup
Instant markup allows you to easily add notes to PDFs or screenshots using a stylus.
- Oppo A33 (2020)
- Oukitel C57 Pro
Has AirPlay
AirPlay allows wireless connection of Apple devices with external screens or speakers. You may stream computer screen, video and music from iOS devices, play games like on consoles or present your slideshows easily on your TV.
- Oppo A33 (2020)
- Oukitel C57 Pro
more languages supported
The number of languages in which the operating system is available. Operating systems with a broader range of supported languages provide an intuitive interface for users around the world.
- Oppo A33 (2020) 125
-
- Oukitel C57 Pro null
-
Can be used as a PC
The device's interface allows you to use it like you would use a PC, by simply connecting your device to a display dock and adding peripherals.
- Oppo A33 (2020) null
-
- Oukitel C57 Pro 125
-
Has sharing intents
If an app has sharing capabilities and the developers have indicated it, the app will automatically appear in your list of sharing options. Some OS’s limit direct sharing options to a select few apps, which means you have to open apps separately in order to upload the files you want to share.
- Oppo A33 (2020)
- Oukitel C57 Pro
Has Quick Start
Quick Start is a feature that allows you to easily set up a new Apple device if you have an existing device set up. To set up the new device, you simply place it next to your old device to transfer the settings and data.
- Oppo A33 (2020)
- Oukitel C57 Pro
Battery
Battery power
Battery power, or battery capacity, represents the amount of electrical energy that a battery can store. More battery power can be an indication of longer battery life.
- Oppo A33 (2020) 5000
-
- Oukitel C57 Pro 4300
-
Supports fast charging
Fast charging technologies, like Qualcomm’s Quick Charge or MediaTek’s Pump Express, are used to reduce the time it takes to charge a device. For example, with Quick Charge 3.0, the battery can be charged to 50% in just 30 minutes.
- Oppo A33 (2020)
- Oukitel C57 Pro
Charging speed
Charging speeds are expressed in watts (W), a measure of electrical power. A higher wattage results in a faster charging speed. In order to achieve the advertised charging speed, it is important to use a compatible charger.
- Oppo A33 (2020) 18
-
- Oukitel C57 Pro null
-
Has reverse wireless charging
The device can be used as a wireless charging station to power other gadgets.
- Oppo A33 (2020)
- Oukitel C57 Pro
Audio
Has stereo speakers
Devices with stereo speakers deliver sound from independent channels on both left and right sides, creating a richer sound and a better experience.
- Oppo A33 (2020)
- Oukitel C57 Pro
Has LDAC
LDAC is a codec developed by Sony for Bluetooth audio. It is capable of a very high bitrate of 990kbps, which provides high resolution audio. It can also automatically adjust to a lower bitrate of 330kbps or 660kbps to increase stability.
- Oppo A33 (2020)
- Oukitel C57 Pro
Has aptX HD
aptX HD is an audio codec for Bluetooth devices that is developed by Qualcomm. It supports high quality 24-bit audio (at a bit rate of 576kbps).
- Oppo A33 (2020)
- Oukitel C57 Pro
Has aptX Adaptive
aptx Adaptive is an audio codec for Bluetooth devices that is developed by Qualcomm. It has a variable bit rate (between 279kbps and 420kbps), which means it can adjust the bit rate for different scenarios, such as listening to HD audio or reducing interference from other devices.
- Oppo A33 (2020)
- Oukitel C57 Pro
Has aptX Lossless
aptX Lossless is an audio codec for Bluetooth devices that is developed by Qualcomm. It supports high quality 16-bit/44.1kHz audio (at a maximum bit rate of 1200kbps). This codec provides CD-quality audio without any loss of data.
- Oppo A33 (2020)
- Oukitel C57 Pro
Number of microphones
More microphones result in better sound quality and enable the device to filter out background noise.
- Oppo A33 (2020) 2
-
- Oukitel C57 Pro null
-
Features
Wi-Fi version
The Wi-Fi versions supported by the device.
- Oppo A33 (2020) wifi_5, wifi_4
- Oukitel C57 Pro wifi_4
Download speed
The download speed is a measurement of the internet connection bandwidth, representing the maximum data transfer rate at which a device can access online content.
- Oppo A33 (2020) 390
-
- Oukitel C57 Pro 300
-
Has emergency SOS via satellite
This feature allows you to contact emergency services with a text message via satellite, when you are outside of cellular/Wi-Fi coverage. Note: Only available in select countries.
- Oppo A33 (2020)
- Oukitel C57 Pro
Has crash detection
The device can detect when you have been in a car crash and automatically contact emergency services if you are unresponsive.
- Oppo A33 (2020)
- Oukitel C57 Pro
Bluetooth version
Bluetooth is a wireless technology standard that allows data transfers between devices placed in close proximity, using short-wavelength, ultra-high frequency radio waves. Newer versions provide faster data transfers.
- Oppo A33 (2020) 5
-
- Oukitel C57 Pro 4.2
-
Has a compass
A compass is useful for gaming, maps, and navigation software.
- Oppo A33 (2020)
- Oukitel C57 Pro
Has an accelerometer
An accelerometer is a sensor used to measure the linear acceleration of a device. A common application is detecting when a device changes between vertical and horizontal positions.
- Oppo A33 (2020)
- Oukitel C57 Pro
Has an HDMI output
Devices with a HDMI or mini HDMI port can transfer high definition video and audio to a display.
- Oppo A33 (2020)
- Oukitel C57 Pro
Miscellaneous
DirectX version
DirectX is used in games, with newer versions supporting better graphics.
- Oppo A33 (2020) 12
-
- Oukitel C57 Pro 11
-