Comparison between:
- Xiaomi QIN 2 Pro
- BQ Aquaris A4.5
- Samsung Galaxy A3 Core
- Google Pixel 2
Brand and model
Information about the brand, model and model alias (if any) of a specific device.
| Xiaomi QIN 2 Pro | BQ Aquaris A4.5 | Samsung Galaxy A3 Core | Google Pixel 2 | |
 |  |  Prices |  Prices | |
| Model alias | QIN2 Pro QIN AI Assistant Pro | Android One Aquaris A4.5 | SM-A013G SM-A013G/DS | Pixel2 |
Design
Information about the dimensions and weight of the device, shown in different measurement units. Body materials, available colors, certifications.
| Width | 55.4 mm 5.54 cm 0.182 ft 2.181 in | 63.48 mm 6.348 cm 0.208 ft 2.499 in | 67.5 mm 6.75 cm 0.221 ft 2.657 in | 69.7 mm 6.97 cm 0.229 ft 2.744 in |
| Height | 132.6 mm 13.26 cm 0.435 ft 5.22 in | 131.77 mm 13.177 cm 0.432 ft 5.188 in | 141.7 mm 14.17 cm 0.465 ft 5.579 in | 145.7 mm 14.57 cm 0.478 ft 5.736 in |
| Thickness | 8.5 mm 0.85 cm 0.028 ft 0.335 in | 8.75 mm 0.875 cm 0.029 ft 0.344 in | 8.6 mm 0.86 cm 0.028 ft 0.339 in | 7.8 mm 0.78 cm 0.026 ft 0.307 in |
| Weight | 105 g 0.23 lbs 3.7 oz | 115 g 0.25 lbs 4.06 oz | 150 g 0.33 lbs 5.29 oz | 143 g 0.32 lbs 5.04 oz |
| Volume | 62.44 cm³ 3.79 in³ | 73.19 cm³ 4.44 in³ | 82.26 cm³ 5 in³ | 79.21 cm³ 4.81 in³ |
| Colors | Black White | Black White | Black Blue Red | Black White Blue |
| Body materials | Plastic | Plastic | Plastic | Aluminium alloy |
| Certification | - | - | - | IP67 |
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 | Micro-SIM | Nano-SIM | Nano-SIM |
| Number of SIM cards | 1 | 2 | 2 | 1 |
| 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) | - |
| - | - | - | Embedded SIM (eSIM) support |
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 | 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 CDMA 1900 MHz CDMA 800 MHz (B10) |
| W-CDMA | W-CDMA 850 MHz (B5) W-CDMA 900 MHz (B8) W-CDMA 1900 MHz (B2) W-CDMA 2100 MHz (B1) | - | - | - |
| UMTS | - | UMTS 900 MHz UMTS 2100 MHz | UMTS 850 MHz (B5) UMTS 900 MHz (B8) UMTS 2100 MHz (B1) | UMTS 850 MHz UMTS 900 MHz UMTS 1700/2100 MHz UMTS 1900 MHz UMTS 2100 MHz |
| LTE | 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 2000 MHz (B34) LTE-TDD 2300 MHz (B40) LTE-TDD 2500 MHz (B41) LTE-TDD 2600 MHz (B38) | LTE 800 MHz LTE 1800 MHz LTE 2100 MHz LTE 2600 MHz | LTE-FDD 700 MHz (B28) 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-TDD 2300 MHz (B40) LTE-TDD 2500 MHz (B41) LTE-TDD 2600 MHz (B38) | LTE-TDD 2300 MHz (B40) LTE-TDD 2500 MHz (B41) LTE-TDD 2600 MHz (B38) LTE 700 MHz Class 13 LTE 700 MHz Class 17 LTE 800 MHz LTE 850 MHz LTE 900 MHz LTE 1700/2100 MHz LTE 1800 MHz LTE 1900 MHz LTE 2100 MHz LTE 2600 MHz LTE 2300 MHz (B30) LTE 1900 MHz (B25) LTE 850 MHz (B26) LTE 700 MHz (B12) LTE 700 MHz (B28) LTE 700 MHz (B29) LTE 1500 MHz (B32) LTE 1700/2100 MHz (B66) |
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 7 | UMTS EDGE GPRS HSPA+ | UMTS EDGE GPRS HSPA+ LTE Cat 4 | UMTS EDGE GPRS HSPA+ LTE Cat 15 EV-DO Rev. A |
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 9.0 Pie | Android 5.1.1 Lollipop | Android 10 Go edition | Android 8.0.0 Oreo 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 | Unisoc SC9863A | MediaTek MT6735M | MediaTek MT6739 | Qualcomm Snapdragon 835 MSM8998 |
| Process technology | 28 nm | 28 nm | 28 nm | 10 nm |
| CPU | 4x 1.6 GHz ARM Cortex-A55, 4x 1.2 GHz ARM Cortex-A55 | ARM Cortex-A53 | ARM Cortex-A53 | 4x 2.35 GHz Kryo 280, 4x 1.9 GHz Kryo 280 |
| CPU bits | 64 bit | 64 bit | 64 bit | 64 bit |
| Instruction set | ARMv8-A | ARMv8-A | ARMv8-A | ARMv8-A |
| Level 1 cache memory (L1) | - | 32 KB + 32 KB | - | 32 KB + 32 KB |
| Level 2 cache memory (L2) | - | 512 KB 0.5 MB | - | 3072 KB 3 MB |
| CPU cores | 8 | 4 | 4 | 8 |
| CPU frequency | 1600 MHz | 1000 MHz | 1300 MHz | 2350 MHz |
| GPU | PowerVR GE8322 | ARM Mali-T720 MP1 | PowerVR GE8100 | Qualcomm Adreno 540 |
| GPU cores | - | 1 | - | - |
| GPU frequency | - | 500 MHz | 570 MHz | 710 MHz |
| RAM capacity | 2 GB | 1 GB | 1 GB | 4 GB |
| RAM type | - | LPDDR3 | - | LPDDR4X |
| RAM channels | - | Single channel | - | Double channel |
| RAM frequency | - | 533 MHz | - | 1866 MHz |
Storage
Every mobile device has a built-in storage (internal memory) with a fixed capacity.
| Storage | 32 GB | 16 GB | 16 GB | 64 GB 128 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 | PLS | AMOLED |
| Diagonal size | 5.05 in 128.27 mm 12.83 cm | 4.5 in 114.3 mm 11.43 cm | 5.3 in 134.62 mm 13.46 cm | 5 in 127 mm 12.7 cm |
| Width | 1.88 in 47.64 mm 4.76 cm | 2.21 in 56.04 mm 5.6 cm | 2.32 in 58.89 mm 5.89 cm | 2.45 in 62.26 mm 6.23 cm |
| Height | 4.69 in 119.1 mm 11.91 cm | 3.92 in 99.62 mm 9.96 cm | 4.77 in 121.06 mm 12.11 cm | 4.36 in 110.69 mm 11.07 cm |
| Aspect ratio | 2.5:1 | 1.778:1 16:9 | 2.056:1 | 1.778:1 16:9 |
| Resolution | 576 x 1440 pixels | 540 x 960 pixels | 720 x 1480 pixels | 1080 x 1920 pixels |
| Pixel density | 307 ppi 120 ppcm | 245 ppi 96 ppcm | 311 ppi 122 ppcm | 441 ppi 173 ppcm |
| Color depth | 24 bit 16777216 colors | 24 bit 16777216 colors | 24 bit 16777216 colors | 24 bit 16777216 colors |
| Display area | 77.48 % | 66.95 % | 74.78 % | 68.08 % |
| Other features | - | Capacitive Multi-touch Scratch resistant | Capacitive Multi-touch | Capacitive Multi-touch Scratch resistant |
| - | Dragontrail glass OGS (One Glass Solution) 450 cd/m² | - | Corning Gorilla Glass 5 2.5D curved glass screen Always-On Display 100000:1 contrast ratio 95% DCI-P3 |
Sensors
Different sensors measure different physical quantities and convert them into signals recognizable by the mobile device.
| Sensors | Proximity Light Accelerometer | Proximity Light Accelerometer Compass Gyroscope Hall | Proximity Light Accelerometer | Proximity Light Accelerometer Compass Gyroscope Barometer Fingerprint Hall |
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 size | - | 4.54 x 3.42 mm 0.22 in | - | - |
| Sensor format | - | - | - | 1/2.6" |
| Pixel size | - | 1.391 µm 0.001391 mm | - | 1.4 µm 0.001400 mm |
| Crop factor | - | 7.61 | - | - |
| Aperture | - | f/2 | f/2.2 | f/1.8 |
| Focal length and 35 mm equivalent | - | - | - | 4.47 mm 27 mm *(35 mm / full frame) |
| Number of lenses | - | 5 | - | - |
| Flash type | LED | Dual LED | LED | Dual LED |
| Image resolution | 3248 x 2448 pixels 7.95 MP | 3264 x 2448 pixels 7.99 MP | 3264 x 2448 pixels 7.99 MP | 4032 x 3024 pixels 12.19 MP |
| Video resolution | 1280 x 720 pixels 0.92 MP | 1280 x 720 pixels 0.92 MP | 1920 x 1080 pixels 2.07 MP | 3840 x 2160 pixels 8.29 MP |
| Video FPS | 30 fps | 30 fps | 30 fps | 30 fps |
| Features | Autofocus | 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 | Autofocus Digital zoom Geotagging Panorama HDR Touch focus Face detection Self-timer | Autofocus Continuous shooting Digital zoom Digital image stabilization Optical image stabilization Geotagging Panorama HDR Touch focus Face detection White balance settings ISO settings Exposure compensation Self-timer Scene mode Phase detection autofocus (PDAF) Laser autofocus (LAF) |
| - | - | - | Phase detection with Dual Pixel 1080p @ 120 fps 720p @ 240 fps |
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 model | - | - | Samsung S5K4E6 | - |
| Sensor type | - | - | CMOS | CMOS |
| Sensor size | - | - | 3.6 x 2.7 mm 0.18 in | - |
| Sensor format | - | - | 1/4" | - |
| Pixel size | - | - | 1.34 µm 0.001340 mm | 1.4 µm 0.001400 mm |
| Crop factor | - | - | 9.61 | - |
| Aperture | - | f/2 | f/2.4 | f/2.4 |
| Focal length and 35 mm equivalent | - | - | 2.66 mm 25.58 mm *(35 mm / full frame) | 3.38 mm 25 mm *(35 mm / full frame) |
| Number of lenses | - | 4 | - | - |
| Image resolution | - | 2560 x 1920 pixels 4.92 MP | 2592 x 1944 pixels 5.04 MP | 3264 x 2448 pixels 7.99 MP |
| Video resolution | - | - | 1920 x 1080 pixels 2.07 MP | 1920 x 1080 pixels 2.07 MP |
| Video FPS | - | - | 30 fps | 30 fps |
| Features | - | - | Face unlock HDR | - |
| - | - | - | OIS |
Audio
Information about the type of speakers and the audio technologies supported by the device.
| Speaker | Loudspeaker Earpiece | Loudspeaker Earpiece | Loudspeaker Earpiece | Loudspeaker Earpiece Stereo speakers |
| - | - | - | HAC (M4/T3) - Hearing Aid Compatibility Headphone adapter |
Radio
The radio in a mobile device is a built-in FM radio receiver.
| Radio | No | Yes | Yes | No |
Tracking/Positioning
Information about the positioning and navigation technologies supported by the device.
| Tracking/Positioning | GPS A-GPS | GPS A-GPS | GPS A-GPS GLONASS BeiDou | GPS A-GPS GLONASS |
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 Dual band Wi-Fi Hotspot | 802.11b 802.11g 802.11n Wi-Fi Hotspot | 802.11b 802.11g 802.11n Wi-Fi Hotspot Wi-Fi Direct | 802.11a 802.11b 802.11g 802.11n 802.11n 5GHz 802.11ac Dual band Wi-Fi Hotspot Wi-Fi Direct |
| - | - | - | 2x2 MiMO |
Bluetooth
Bluetooth is a standard for secure wireless data transfer between different types of devices over short distances.
| Version | 4.2 | 4.0 | 5.0 | 5.0 |
| Features | - | A2DP | 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 | USB Type-C |
| Version | 2.0 | 2.0 | 2.0 | 3.1 |
| Features | Charging Mass storage On-The-Go | Charging Mass storage On-The-Go | 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 | No | Yes | Yes | No |
Connectivity
Information about other important connectivity technologies supported by the devices.
| Connectivity | Computer sync OTA sync Infrared VoLTE | Computer sync OTA sync Tethering | Computer sync OTA sync Tethering VoLTE | Computer sync OTA sync Tethering DLNA 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 | 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 eAAC+ FLAC MIDI MP3 OGG WMA WAV | 3GPP AAC AAC+ AMR eAAC+ FLAC M4A MIDI MP3 OGG WMA WAV | AAC AMR FLAC M4A MP3 OGG WAV 3GA AWB MID XMF MXMF IMY RTTTL RTX OTA | AAC AAC+ AMR AMR-WB aptX eAAC+ FLAC M4A MIDI MP3 OGG WMA WAV LDAC |
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 Xvid | 3GPP AVI MKV MP4 WebM WMV Xvid | MKV MP4 M4V 3GP 3G2 FLV WEBM | 3GPP AVI DivX Flash Video H.263 H.264 H.265 MKV QuickTime MP4 VC-1 VP8 WebM WMV 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 | 2100 mAh | 2470 mAh | 3000 mAh | 2700 mAh |
| Type | Li-Ion | Li-Polymer | Li-Ion | Li-Ion |
| 4G talk time | - | - | 17 h 1020 min 0.7 days | - |
| Charger output power | 5 V / 1 A | - | 5 V / 1 A | 9 V / 2 A |
| Features | Non-removable | Non-removable | 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 (EU) | - | 0.329 W/kg | 0.638 W/kg | - |
| Body SAR (EU) | - | 0.601 W/kg | 1.18 W/kg | - |
| Head SAR (USA) | - | - | - | 0.93 W/kg |
| Body SAR (USA) | - | - | - | 1.14 W/kg |
Additional features
Some devices have additional features, different from the standard ones above, but equally important and worth mentioning.
| Additional features | - | - | - | Active Edge |
| Xiaomi QIN 2 Pro | BQ Aquaris A4.5 | Samsung Galaxy A3 Core | Google Pixel 2 |