Comparison between:
- Oppo A1k
- Xiaomi Redmi 5A
Brand and model
Information about the brand, model and model alias (if any) of a specific device.
| Oppo A1k | Xiaomi Redmi 5A | |
 |  | |
| Model alias | CPH1923 | Hongmi 5A Red Rise 5A |
Design
Information about the dimensions and weight of the device, shown in different measurement units. Body materials, available colors, certifications.
| Width | 73.8 mm 7.38 cm 0.242 ft 2.906 in | 70.1 mm 7.01 cm 0.23 ft 2.76 in |
| Height | 154.5 mm 15.45 cm 0.507 ft 6.083 in | 140.4 mm 14.04 cm 0.461 ft 5.528 in |
| Thickness | 8.4 mm 0.84 cm 0.028 ft 0.331 in | 8.35 mm 0.835 cm 0.027 ft 0.329 in |
| Weight | 170 g 0.37 lbs 6 oz | 137 g 0.3 lbs 4.83 oz |
| Volume | 95.78 cm³ 5.82 in³ | 82.18 cm³ 4.99 in³ |
| Colors | Black Red | Gold Rose-gold Gray |
| Body materials | Polycarbonate | 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 Nano-SIM / microSD |
| Number of SIM cards | 2 | 2 |
| Features | Dual SIM stand-by (Both cards are active. When one is busy, the other is not active) | - |
| - | Two dedicated Nano-SIM slots (India) |
Networks
A mobile (cellular) network is a radio system, which allows a large number of mobile devices to communicate with each other.
| GSM | GSМ 850 МНz GSМ 900 МНz GSМ 1900 МНz | GSМ 850 МНz GSМ 900 МНz GSМ 1900 МНz |
| CDMA | - | CDMA 800 MHz |
| TD-SCDMA | - | TD-SCDMA 1880-1920 MHz TD-SCDMA 2010-2025 MHz |
| UMTS | UМТS 900 МНz UМТS 2100 МНz | UМТS 900 МНz UМТS 1900 МНz UМТS 2100 МНz |
| LTE | LТЕ-ТDD 2300 МНz (В40) LТЕ-ТDD 2500 МНz (В41) LТЕ-ТDD 2600 МНz (В38) LТЕ 800 МНz LТЕ 850 МНz LТЕ 900 МНz LТЕ 1800 МНz LТЕ 2100 МНz LТЕ 700 МНz (В28) | LТЕ 850 МНz LТЕ 900 МНz LТЕ 1800 МНz LТЕ 2100 МНz LТЕ 2600 МНz LТЕ-ТDD 1900 МНz (В39) LТЕ-ТDD 2300 МНz (В40) LТЕ-ТDD 2600 МНz (В38) |
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 | UМТS GРRS LТЕ Саt 4 | UМТS GРRS LТЕ Саt 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) | СоlоrОS 6.0 (Аndrоid 9.0 Рiе) | МΙUΙ V9 (Аndrоid 7.1 Νоugаt) МΙUΙ V10 |
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 | МеdiаТеk Неliо Р22 (МТ6762) | Quаlсоmm Snарdrаgоn 425 (МSМ8917) |
| Process technology | 12 nm | 28 nm |
| CPU | 4х 2.0 GНz АRМ Соrtех-А53, 4х 1.5 GНz АRМ Соrtех-А53 | 4х 1.4 GНz АRМ Соrtех-А53 |
| CPU bits | 64 bit | 32 bit |
| Instruction set | ARMv8-A | ARMv7 |
| Level 1 cache memory (L1) | 16 KB + 16 KB | 16 KB + 16 KB |
| CPU cores | 8 | 4 |
| CPU frequency | 2000 MHz | 1400 MHz |
| GPU | IMG PowerVR GE8320 | Qualcomm Adreno 308 |
| GPU frequency | 650 MHz | 598 MHz |
| RAM capacity | 2 GB | 2 GB 3 GB |
| RAM type | LPDDR3 | LPDDR3 |
| RAM channels | Single channel | Single channel |
| RAM frequency | 833 MHz | 567 MHz |
Storage
Every mobile device has a built-in storage (internal memory) with a fixed capacity.
| Storage | 32 GB | 16 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 | 6.1 in 154.94 mm 15.49 cm | 5 in 127 mm 12.7 cm |
| Width | 2.73 in 69.29 mm 6.93 cm | 2.45 in 62.26 mm 6.23 cm |
| Height | 5.46 in 138.58 mm 13.86 cm | 4.36 in 110.69 mm 11.07 cm |
| Aspect ratio | 2:1 2:1 (18:9) | 1.778:1 16:9 |
| Resolution | 720 x 1440 pixels | 1080 x 1920 pixels |
| Pixel density | 264 ppi 103 ppcm | 441 ppi 173 ppcm |
| Color depth | 24 bit 16777216 colors | 24 bit 16777216 colors |
| Display area | 84.49 % | 70.25 % |
| Other features | Capacitive Multi-touch Scratch resistant | Capacitive Multi-touch |
| Corning Gorilla Glass 3 2.5D curved glass screen | 1000:1 contrast ratio 72% NTSC |
Sensors
Different sensors measure different physical quantities and convert them into signals recognizable by the mobile device.
| Sensors | Proximity Light Accelerometer | Proximity Light Accelerometer |
Main rear camera
The main 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 |
| Sensor format | 1/3.2" | - |
| Pixel size | 1.4 µm 0.001400 mm | - |
| ISO | 100 - 1600 | - |
| Aperture | f/2.2 | f/2.2 |
| Focal length and 35 mm equivalent | 3.6 mm 27 mm *(35 mm / full frame) | - |
| Number of lenses | - | 5 |
| Flash type | LED | LED |
| Image resolution | 3264 x 2448 pixels 7.99 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 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) | Autofocus Continuous shooting Digital zoom Geotagging Panorama HDR Touch focus Face detection White balance settings ISO settings Exposure compensation Self-timer Scene mode |
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 format | 1/5" | - |
| Pixel size | 1.12 µm 0.001120 mm | - |
| Aperture | f/2 | f/2 |
| Focal length and 35 mm equivalent | 2.64 mm 28 mm *(35 mm / full frame) | - |
| Image resolution | 2592 x 1944 pixels 5.04 MP | 2592 x 1944 pixels 5.04 MP |
| Video resolution | 1280 x 720 pixels 0.92 MP | 1920 x 1080 pixels 2.07 MP |
| Video FPS | 30 fps | 30 fps |
| Features | Face unlock | - |
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 | No | Yes |
Tracking/Positioning
Information about the positioning and navigation technologies supported by the device.
| Tracking/Positioning | GРS А-GРS | GРS А-GРS |
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 Wi-Fi Disрlаy 802.11а | 802.11b 802.11g Wi-Fi Disрlаy 802.11а |
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 HID |
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 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 |
Connectivity
Information about other important connectivity technologies supported by the devices.
| Connectivity | Computer sync OTA sync Tethering VoLTE ViLTE | Computer sync OTA sync Infrared 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 |
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 eAAC+ FLAC MIDI MP3 OGG WMA WAV | AAC AC3 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 MKV MP4 WebM WMV Xvid | 3GPP AVI H.263 H.264 MKV MP4 VC-1 VP8 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 | 4000 mAh | 3000 mAh |
| Type | Li-Polymer | Li-Polymer |
| Charger output power | 5 V / 2 A | 5 V / 1 A |
| 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 (EU) | - | 0.87 W/kg |
| Body SAR (EU) | - | 1.544 W/kg |
| Head SAR (USA) | - | 1.362 W/kg |
| Body SAR (USA) | - | 1.18 W/kg |
| Head SAR (India) | 1.132 W/kg | - |
| Body SAR (India) | 0.569 W/kg | - |
Additional features
Some devices have additional features, different from the standard ones above, but equally important and worth mentioning.
| Additional features | CPH1923 - SAR (Specific Absorption Rate) India: head - 1.132 W/kg; body - 0.569 W/kg | - |
| Oppo A1k | Xiaomi Redmi 5A |
