Comparison between:
- Oppo A31 CPH2015
- Oppo R1C
Brand and model
Information about the brand, model and model alias (if any) of a specific device.
| Oppo A31 CPH2015 | Oppo R1C | |
 Prices |  | |
| Model alias | CPH2015 | R8200 R8205 R8207 |
Design
Information about the dimensions and weight of the device, shown in different measurement units. Body materials, available colors, certifications.
| Width | 75.5 mm 7.55 cm 0.248 ft 2.972 in | 70.1 mm 7.01 cm 0.23 ft 2.76 in |
| Height | 163.9 mm 16.39 cm 0.538 ft 6.453 in | 140.6 mm 14.06 cm 0.461 ft 5.535 in |
| Thickness | 8.3 mm 0.83 cm 0.027 ft 0.327 in | 6.85 mm 0.685 cm 0.022 ft 0.27 in |
| Weight | 180 g 0.4 lbs 6.35 oz | 130 g 0.29 lbs 4.59 oz |
| Volume | 102.71 cm³ 6.24 in³ | 67.51 cm³ 4.1 in³ |
| Colors | Mystery Black Fantasy White | White Blue |
| Body materials | Plastic | Glass Metal |
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 |
| 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 850 MHz GSM 900 MHz GSM 1800 MHz GSM 1900 MHz |
| CDMA | CDMA 800 MHz (BC0) | - |
| W-CDMA | W-CDMA 850 MHz (B5) W-CDMA 900 MHz (B8) W-CDMA 2100 MHz (B1) | - |
| TD-SCDMA | TD-SCDMA 1880-1920 MHz TD-SCDMA 2010-2025 MHz | TD-SCDMA 1900 MHz TD-SCDMA 2000 MHz |
| LTE | LTE-FDD 850 MHz (B5) LTE-FDD 900 MHz (B8) LTE-FDD 2100 MHz (B1) LTE-FDD 2600 MHz (B7) 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-TDD 1900 MHz (B39) LTE-TDD 2300 MHz (B40) 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 TD-SCDMA | EDGE GPRS LTE Cat 4 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 6.1.2 (Android 9.0 Pie) | ColorOS 2.0.1 (Android 4.4 KitKat) |
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 P35 (MT6765) | Qualcomm Snapdragon 615 (MSM8939) |
| Process technology | 12 nm | 28 nm |
| CPU | 4x 2.3 GHz ARM Cortex-A53, 4x 1.8 GHz ARM Cortex-A53 | 4x 1.7 GHz ARM Cortex-A53, 4x 1.1 GHz ARM Cortex-A53 |
| CPU bits | 64 bit | 64 bit |
| Instruction set | ARMv8-A | ARMv8-A |
| Level 0 cache memory (L0) | - | 4 KB + 4 KB |
| Level 1 cache memory (L1) | - | 16 KB + 16 KB |
| Level 2 cache memory (L2) | - | 2048 KB 2 MB |
| CPU cores | 8 | 8 |
| CPU frequency | 2300 MHz | 1700 MHz |
| GPU | IMG PowerVR GE8320 | Qualcomm Adreno 405 |
| GPU frequency | 680 MHz | 550 MHz |
| RAM capacity | 4 GB | 2 GB |
| RAM type | LPDDR4X | LPDDR3 |
| RAM channels | Double channel | Single channel |
| RAM frequency | 1600 MHz | 800 MHz |
Storage
Every mobile device has a built-in storage (internal memory) with a fixed capacity.
| Storage | 128 GB | 16 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 | 6.5 in 165.1 mm 16.51 cm | 5 in 127 mm 12.7 cm |
| Width | 2.67 in 67.75 mm 6.78 cm | 2.45 in 62.26 mm 6.23 cm |
| Height | 5.93 in 150.56 mm 15.06 cm | 4.36 in 110.69 mm 11.07 cm |
| Aspect ratio | 2.222:1 | 1.778:1 16:9 |
| Resolution | 720 x 1600 pixels | 720 x 1280 pixels |
| Pixel density | 270 ppi 106 ppcm | 294 ppi 115 ppcm |
| Color depth | 24 bit 16777216 colors | 24 bit 16777216 colors |
| Display area | 82.7 % | 70.15 % |
| Other features | Capacitive Multi-touch Scratch resistant | Capacitive Multi-touch |
| 1500:1 480 cd/m² | LTPS (Low Temperature PolySilicon) 1000:1 contrast ratio 500 cd/m² |
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 |
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 | - | Sony IMX214 Exmor RS |
| Sensor type | - | CMOS |
| Sensor size | - | 4.69 x 3.52 mm 0.23 in |
| Pixel size | 0.8 µm 0.000800 mm | 1.127 µm 0.001127 mm |
| Crop factor | - | 7.38 |
| Aperture | f/1.8 | f/2 |
| Flash type | LED | LED |
| Image resolution | 4096 x 3072 pixels 12.58 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 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 |
| 5-element lens Secondary rear camera - 2 MP (macro) Aperture size - f/2.4 (#2) Third rear camera - 2 MP (depth-sensing) Aperture size - f/2.4 (#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.
| Aperture | f/2 | - |
| Image resolution | 3264 x 2448 pixels 7.99 MP | 2560 x 1920 pixels 4.92 MP |
| Video resolution | 1920 x 1080 pixels 2.07 MP | - |
| Video FPS | 30 fps | - |
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 GLONASS BeiDou | GPS A-GPS |
Wi-Fi
Wi-Fi is a technology that provides wireless data connections between various devices within a short range.
| Wi-Fi | 802.11a 802.11b 802.11g 802.11n 802.11n 5GHz 802.11ac Dual band Wi-Fi Hotspot Wi-Fi Direct Wi-Fi Display | 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 | 5.0 | 4.0 |
| Features | A2DP LE | 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 On-The-Go | 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 Tethering VoLTE | Computer sync OTA sync Tethering NFC |
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 AAC+ AMR AMR-WB eAAC+ FLAC MIDI MP3 OGG WMA WAV | AAC AMR 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 DivX Flash Video H.263 H.264 MKV MP4 WebM WMV Xvid | 3GPP AVI Flash Video MKV QuickTime MP4 WMV |
Battery
The batteries of mobile devices differ in capacity and technology. They provide the electrical charge needed for the functioning of the devices.
| Capacity | 4230 mAh | 2420 mAh |
| Type | Li-Polymer | Li-Polymer |
| 2G talk time | - | 8 h 480 min 0.3 days |
| 2G stand-by time | - | 250 h 15000 min 10.4 days |
| 3G talk time | - | 8 h 480 min 0.3 days |
| 3G stand-by time | - | 250 h 15000 min 10.4 days |
| Features | Non-removable | 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) | 1.107 W/kg | - |
| Body SAR (India) | 0.532 W/kg | - |
| Oppo A31 CPH2015 | Oppo R1C |