Comparison between:
- Oppo A57 4G
- Vivo Y20 2021
- Vivo Y20 2020
Brand and model
Information about the brand, model and model alias (if any) of a specific device.
| Oppo A57 4G | Vivo Y20 2021 | Vivo Y20 2020 | |
 |  |  | |
| Model alias | - | Y20 (2021) | V2029 |
Design
Information about the dimensions and weight of the device, shown in different measurement units. Body materials, available colors, certifications.
| Width | 75 mm 7.5 cm 0.246 ft 2.953 in | 76.32 mm 7.632 cm 0.25 ft 3.005 in | 76.32 mm 7.632 cm 0.25 ft 3.005 in |
| Height | 163.7 mm 16.37 cm 0.537 ft 6.445 in | 164.41 mm 16.441 cm 0.539 ft 6.473 in | 164.41 mm 16.441 cm 0.539 ft 6.473 in |
| Thickness | 8 mm 0.8 cm 0.026 ft 0.315 in | 8.41 mm 0.841 cm 0.028 ft 0.331 in | 8.41 mm 0.841 cm 0.028 ft 0.331 in |
| Weight | 187 g 0.41 lbs 6.6 oz | 192 g 0.42 lbs 6.78 oz | 192 g 0.42 lbs 6.78 oz |
| Volume | 98.22 cm³ 5.96 in³ | 105.53 cm³ 6.41 in³ | 105.53 cm³ 6.41 in³ |
| Colors | Glowing Black Glowing Green | Dawn White Nebula Blue | Obsidian Black Dawn White |
| Body materials | Plastic | Plastic | Plastic |
| Certification | IP54 | - | - |
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 / microSD | 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) | 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 850 MHz (B5) GSM 900 MHz (B8) GSM 1800 MHz (B3) | GSM 850 MHz (B5) GSM 900 MHz (B8) GSM 1800 MHz (B3) GSM 1900 MHz (B2) |
| CDMA | CDMA 800 MHz (BC0) | - | - |
| W-CDMA | W-CDMA 850 MHz (B5) W-CDMA 850 MHz (B6) W-CDMA 900 MHz (B8) W-CDMA 900 MHz (B19) W-CDMA 1900 MHz (B2) W-CDMA 2100 MHz (B1) | W-CDMA 850 MHz (B5) W-CDMA 900 MHz (B8) W-CDMA 2100 MHz (B1) | W-CDMA 850 MHz (B5) W-CDMA 900 MHz (B8) W-CDMA 1700 MHz (B4) W-CDMA 2100 MHz (B1) |
| TD-SCDMA | TD-SCDMA 1880-1920 MHz TD-SCDMA 2010-2025 MHz | - | - |
| LTE | LTE-FDD 700 MHz (B28) LTE-FDD 850 MHz (B5) LTE-FDD 900 MHz (B8) LTE-FDD 1800 MHz (B3) LTE-FDD 2100 MHz (B1) LTE-TDD 1900 MHz (B39) LTE-TDD 2000 MHz (B34) 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-FDD 2600 MHz (B7) LTE-TDD 1900 MHz (B39) 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 1700 MHz (B4) LTE-FDD 1800 MHz (B3) LTE-FDD 2100 MHz (B1) LTE-TDD 1900 MHz (B39) LTE-TDD 2500 MHz (B41) LTE-TDD 2600 MHz (B38) |
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 | EDGE GPRS HSPA+ LTE | UMTS EDGE GPRS HSPA+ LTE Cat 4 EV-DO Rev. A TD-SCDMA TD-HSDPA | UMTS EDGE GPRS HSPA+ LTE Cat 4 EV-DO Rev. A TD-SCDMA TD-HSDPA |
Operating system
Operating system is the system software, which manages and controls the functioning of the hardware components of the device.
| Operating system (OS) | ColorOS 12.1 (Android 12) | FunTouch OS 11 (Android 10) | FunTouch OS 10.5 (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 | MediaTek Helio G35 (MT6765G) | MediaTek Helio P35 (MT6765) | Qualcomm Snapdragon 460 (SM4250-AA) |
| Process technology | 12 nm | 12 nm | 11 nm |
| CPU | 4x 2.3 GHz ARM Cortex-A53, 4x 1.8 GHz ARM Cortex-A53 | 4x 2.3 GHz ARM Cortex-A53, 4x 1.8 GHz ARM Cortex-A53 | 4x 1.8 GHz ARM Cortex-A73, 4x 1.6 GHz ARM Cortex-A53 (Kryo 240) |
| CPU bits | 64 bit | 64 bit | 64 bit |
| Instruction set | ARMv8-A | ARMv8-A | ARMv8-A |
| CPU cores | 8 | 8 | 8 |
| CPU frequency | 2300 MHz | 2300 MHz | 1800 MHz |
| GPU | IMG PowerVR GE8320 | IMG PowerVR GE8320 | Qualcomm Adreno 610 |
| GPU frequency | 680 MHz | 680 MHz | 600 MHz |
| RAM capacity | 3 GB 4 GB | 4 GB | 4 GB |
| RAM type | LPDDR4X | LPDDR4X | LPDDR4X |
| RAM channels | Double channel | Double channel | Double channel |
| RAM frequency | 1600 MHz | 1600 MHz | 1866 MHz |
| - | Ultra Game Mode 4D Game Vibration 2.0 Multi Turbo 3.0 | Ultra Game Mode 4D Game Vibration 2.0 Multi Turbo 3.0 |
Storage
Every mobile device has a built-in storage (internal memory) with a fixed capacity.
| Storage | 64 GB | 64 GB | 64 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 | A-Si IPS | IPS | IPS |
| Diagonal size | 6.56 in 166.62 mm 16.66 cm | 6.51 in 165.35 mm 16.54 cm | 6.51 in 165.35 mm 16.54 cm |
| Width | 2.68 in 67.95 mm 6.8 cm | 2.67 in 67.86 mm 6.79 cm | 2.67 in 67.86 mm 6.79 cm |
| Height | 5.99 in 152.14 mm 15.21 cm | 5.94 in 150.79 mm 15.08 cm | 5.94 in 150.79 mm 15.08 cm |
| Aspect ratio | 2.239:1 | 2.222:1 | 2.222:1 |
| Resolution | 720 x 1612 pixels | 720 x 1600 pixels | 720 x 1600 pixels |
| Pixel density | 269 ppi 105 ppcm | 270 ppi 106 ppcm | 270 ppi 106 ppcm |
| Color depth | 24 bit 16777216 colors | 24 bit 16777216 colors | 24 bit 16777216 colors |
| Display area | 84.48 % | 81.81 % | 81.81 % |
| Other features | Capacitive Multi-touch Scratch resistant | Capacitive Multi-touch | Capacitive Multi-touch |
| 2.5D curved glass screen Panda MN228 glass 480 cd/m² typical brightness 600 cd/m² peak brightness | 2.5D curved glass screen Halo Fullview Display | 2.5D curved glass screen Halo Fullview Display |
Sensors
Different sensors measure different physical quantities and convert them into signals recognizable by the mobile device.
| Sensors | Proximity Light Accelerometer Compass Gyroscope Geomagnetic Fingerprint Gravity | Proximity Light Accelerometer Compass Gyroscope Fingerprint | Proximity Light Accelerometer Compass Gyroscope Fingerprint |
| Side-mounted fingerprint sensor | Side-mounted fingerprint sensor | Side-mounted fingerprint sensor |
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 | CMOS | CMOS |
| Sensor format | 1/3.06" | - | - |
| Pixel size | 1.12 µm 0.001120 mm | - | - |
| Aperture | f/2.2 | f/2.2 | f/2.2 |
| Focal length and 35 mm equivalent | 26 mm *(35 mm / full frame) | - | - |
| Field of view | 80 ° | - | - |
| Number of lenses | 5 | 5 | 5 |
| Flash type | LED | LED | 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 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 Digital image stabilization Geotagging Panorama HDR Touch focus Face detection White balance settings ISO settings Exposure compensation Self-timer Scene mode Macro mode Phase detection autofocus (PDAF) | Autofocus Continuous shooting Digital zoom Digital image stabilization Geotagging Panorama HDR Touch focus Face detection White balance settings ISO settings Exposure compensation Self-timer Scene mode Macro mode Phase detection autofocus (PDAF) |
| Secondary rear camera - 2 MP (depth-sensing) Aperture size - f/2.4 (#2) Angle of view - 89° (#2) 3-element lens (#2) | Secondary rear camera - 2 MP (macro) 4 cm shooting distance (#2) Aperture size - f/2.4 (#2) 3-element lens (#2) Third rear camera - 2 MP (depth-sensing) Aperture size - f/2.4 (#3) 3-element lens (#3) | Secondary rear camera - 2 MP (macro) 4 cm shooting distance (#2) Aperture size - f/2.4 (#2) 3-element lens (#2) Third rear camera - 2 MP (depth-sensing) Aperture size - f/2.4 (#3) 3-element lens (#3) |
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 type | CMOS | - | - |
| Aperture | f/2 | f/1.8 | f/1.8 |
| Field of view | 79 ° | - | - |
| Number of lenses | 5 | - | - |
| Image resolution | 3264 x 2448 pixels 7.99 MP | 3264 x 2448 pixels 7.99 MP | 3264 x 2448 pixels 7.99 MP |
| Video resolution | 1920 x 1080 pixels 2.07 MP | 1280 x 720 pixels 0.92 MP | 1280 x 720 pixels 0.92 MP |
| Video FPS | 30 fps | 30 fps | 30 fps |
| Features | HDR Face unlock Face detection | 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 |
Tracking/Positioning
Information about the positioning and navigation technologies supported by the device.
| Tracking/Positioning | GPS A-GPS GLONASS BeiDou Galileo | GPS A-GPS GLONASS BeiDou Galileo | GPS A-GPS GLONASS BeiDou |
Wi-Fi
Wi-Fi is a technology that provides wireless data connections between various devices within a short range.
| Wi-Fi | 802.11a 802.11b 802.11g 802.11n 802.11n 5GHz 802.11ac Dual band Wi-Fi Hotspot Wi-Fi Direct Wi-Fi Display | 802.11a 802.11b 802.11g 802.11n 802.11n 5GHz Dual band Wi-Fi Hotspot | 802.11b 802.11g 802.11n Wi-Fi Hotspot |
Bluetooth
Bluetooth is a standard for secure wireless data transfer between different types of devices over short distances.
| Version | 5.3 | 5.0 | 5.0 |
| Features | A2DP LE | 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 | Micro USB |
| Version | 2.0 | 2.0 | 2.0 |
| Features | Charging Mass storage On-The-Go | Charging Mass storage On-The-Go | Charging 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 Tethering VoLTE | Computer sync OTA sync Tethering VoLTE | 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 AAC+ AMR AMR-WB eAAC+ FLAC MIDI MP3 OGG WMA WAV | FLAC MIDI MP3 WAV MP2 AMR-NB Vorbis APE | FLAC MIDI MP3 WAV MP2 AMR-NB Vorbis APE |
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 DivX Flash Video H.263 H.264 MKV MP4 WebM WMV Xvid | AVI MKV MP4 3GP FLV | AVI MKV MP4 3GP TS FLV |
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 | 5000 mAh | 5000 mAh |
| Type | Li-Ion | Li-Ion | Li-Ion |
| 4G talk time | - | - | 26 h 1560 min 1.1 days |
| 4G stand-by time | - | - | 610 h 36600 min 25.4 days |
| Charger output power | 11 V / 3 A | 5 V / 2 A | 9 V / 2 A |
| 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 (India) | - | 1.19 W/kg | 1.19 W/kg |
| Body SAR (India) | - | 0.58 W/kg | 0.58 W/kg |
| Oppo A57 4G | Vivo Y20 2021 | Vivo Y20 2020 |