Comparison between:
- nubia Z7 mini
- Uniscope US828
- BLU Dash 5.5
- Coolpad 8729
Brand and model
Information about the brand, model and model alias (if any) of a specific device.
| nubia Z7 mini | Uniscope US828 | BLU Dash 5.5 | Coolpad 8729 | |
 |  |  |  | |
| Model alias | NX507J | - | D470 | - |
Design
Information about the dimensions and weight of the device, shown in different measurement units. Body materials, available colors, certifications.
| Width | 69.3 mm 6.93 cm 0.227 ft 2.728 in | 75.4 mm 7.54 cm 0.247 ft 2.969 in | 78.8 mm 7.88 cm 0.259 ft 3.102 in | 77.7 mm 7.77 cm 0.255 ft 3.059 in |
| Height | 140.9 mm 14.09 cm 0.462 ft 5.547 in | 150.1 mm 15.01 cm 0.492 ft 5.909 in | 155.5 mm 15.55 cm 0.51 ft 6.122 in | 153.3 mm 15.33 cm 0.503 ft 6.035 in |
| Thickness | 8.2 mm 0.82 cm 0.027 ft 0.323 in | 9.1 mm 0.91 cm 0.03 ft 0.358 in | 10 mm 1 cm 0.033 ft 0.394 in | 8.1 mm 0.81 cm 0.027 ft 0.319 in |
| Weight | 143 g 0.32 lbs 5.04 oz | 165 g 0.36 lbs 5.82 oz | 175 g 0.39 lbs 6.17 oz | 160 g 0.35 lbs 5.64 oz |
| Volume | 80.07 cm³ 4.86 in³ | 102.99 cm³ 6.25 in³ | 122.53 cm³ 7.44 in³ | 96.48 cm³ 5.86 in³ |
| Colors | White Red Green Yellow Blue | Black White | White Gray Yellow Pink Black Orange Blue | White |
| Body materials | Plastic Glass | - | - | - |
SIM card
The Subscriber Identity Module (SIM) is used in mobile devices for storing data authenticating the subscribers of mobile services.
| SIM card type | Micro-SIM | - | - | - |
| Number of SIM cards | 2 | 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) | 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 GSM 900 MHz GSM 1800 MHz GSM 1900 MHz | GSM 900 MHz GSM 1800 MHz GSM 1900 MHz | GSM 850 MHz GSM 900 MHz GSM 1800 MHz GSM 1900 MHz | GSM 900 MHz GSM 1800 MHz GSM 1900 MHz |
| CDMA | CDMA 800 MHz | - | - | - |
| W-CDMA | - | W-CDMA 850 MHz W-CDMA 1900 MHz W-CDMA 2100 MHz | - | - |
| TD-SCDMA | TD-SCDMA 1880-1920 MHz TD-SCDMA 2010-2025 MHz | TD-SCDMA 1880-1920 MHz TD-SCDMA 2010-2025 MHz | - | TD-SCDMA 1880-1920 MHz TD-SCDMA 2010-2025 MHz |
| UMTS | UMTS 850 MHz UMTS 900 MHz UMTS 1900 MHz UMTS 2100 MHz | - | UMTS 850 MHz UMTS 1900 MHz UMTS 2100 MHz | - |
| LTE | LTE 1800 MHz LTE 2100 MHz LTE 2600 MHz LTE-TDD 1900 MHz (B39) LTE-TDD 2300 MHz (B40) LTE-TDD 2600 MHz (B38) | LTE 1800 MHz LTE 2600 MHz LTE-TDD 1900 MHz (B39) LTE-TDD 2300 MHz (B40) LTE-TDD 2600 MHz (B38) | LTE 850 MHz LTE 1700/2100 MHz LTE 1900 MHz | LTE-TDD 1900 MHz (B39) LTE-TDD 2300 MHz (B40) 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 | UMTS EDGE GPRS Class 12 HSPA+ LTE EV-DO Rev. A | UMTS EDGE GPRS HSPA+ LTE TD-SCDMA TD-HSDPA | UMTS EDGE GPRS HSPA+ LTE | EDGE GPRS LTE Cat 3 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) | Android 4.4.2 KitKat | Android 4.2 Jelly Bean | Android 4.2.2 Jelly Bean | Android 4.3 Jelly Bean |
| User interface (UI) | nubia 2.5 | - | - | CoolLife 5.0 |
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 | Qualcomm Snapdragon 800 (MSM8974AA) | Qualcomm Snapdragon 400 (MSM8926) | MediaTek MT6582 | Qualcomm Snapdragon 400 (MSM8926) |
| Process technology | 28 nm | 28 nm | 28 nm | 28 nm |
| CPU | 4x 2.26 GHz Krait 400 | 4x 1.2 GHz ARM Cortex-A7 | 4x 1.3 GHz ARM Cortex-A7 | 4x 1.2 GHz ARM Cortex-A7 |
| CPU bits | 32 bit | 32 bit | 32 bit | 32 bit |
| Instruction set | ARMv7-A | ARMv7-A | ARMv7-A | ARMv7-A |
| Level 0 cache memory (L0) | 4 KB + 4 KB | - | - | - |
| Level 1 cache memory (L1) | 16 KB + 16 KB | 16 KB + 16 KB | 32 KB + 32 KB | 16 KB + 16 KB |
| Level 2 cache memory (L2) | 2048 KB 2 MB | 1024 KB 1 MB | 512 KB 0.5 MB | 1024 KB 1 MB |
| CPU cores | 4 | 4 | 4 | 4 |
| CPU frequency | 2260 MHz | 1200 MHz | 1300 MHz | 1200 MHz |
| GPU | Qualcomm Adreno 330 | Qualcomm Adreno 305 | ARM Mali-400 MP2 | Qualcomm Adreno 305 |
| GPU cores | 4 | 1 | 2 | 1 |
| GPU frequency | 450 MHz | 450 MHz | 500 MHz | 450 MHz |
| RAM capacity | 2 GB | 1 GB | 512 MB | 1 GB |
| RAM type | LPDDR3 | LPDDR2/LPDDR3 | LPDDR2/LPDDR3 | LPDDR2/LPDDR3 |
| RAM channels | Double channel | Single channel | Single channel | Single channel |
| RAM frequency | 800 MHz | 533 MHz | 533 MHz | 533 MHz |
Storage
Every mobile device has a built-in storage (internal memory) with a fixed capacity.
| Storage | 16 GB | 4 GB | 4 GB | 4 GB |
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 | 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 | LCD | IPS | IPS |
| Diagonal size | 5 in 127 mm 12.7 cm | 5.3 in 134.62 mm 13.46 cm | 5.5 in 139.7 mm 13.97 cm | 5.5 in 139.7 mm 13.97 cm |
| Width | 2.45 in 62.26 mm 6.23 cm | 2.6 in 66 mm 6.6 cm | 2.69 in 68.45 mm 6.84 cm | 2.7 in 68.49 mm 6.85 cm |
| Height | 4.36 in 110.69 mm 11.07 cm | 4.62 in 117.33 mm 11.73 cm | 4.79 in 121.78 mm 12.18 cm | 4.79 in 121.76 mm 12.18 cm |
| Aspect ratio | 1.778:1 16:9 | 1.778:1 16:9 | 1.779:1 | 1.778:1 16:9 |
| Resolution | 1080 x 1920 pixels | 720 x 1280 pixels | 480 x 854 pixels | 540 x 960 pixels |
| Pixel density | 441 ppi 173 ppcm | 277 ppi 108 ppcm | 178 ppi 69 ppcm | 200 ppi 78 ppcm |
| Color depth | 24 bit 16777216 colors | 24 bit 16777216 colors | 24 bit 16777216 colors | 24 bit 16777216 colors |
| Display area | 70.81 % | 68.64 % | 68.25 % | 70.24 % |
| Other features | Capacitive Multi-touch | Capacitive Multi-touch | Capacitive Multi-touch | Capacitive Multi-touch |
Sensors
Different sensors measure different physical quantities and convert them into signals recognizable by the mobile device.
| Sensors | Proximity Light Accelerometer Compass Gyroscope | Proximity Light Accelerometer | Proximity 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 model | Sony IMX214 Exmor RS | - | - | - |
| Sensor type | CMOS | - | - | - |
| Sensor size | 4.69 x 3.52 mm 0.23 in | - | - | - |
| Pixel size | 1.115 µm 0.001115 mm | - | - | - |
| Crop factor | 7.38 | - | - | - |
| ISO | 100 - 1600 | - | - | - |
| Aperture | f/2 - 22 | - | - | - |
| Shutter speed | 1 - 1/5000 | - | - | - |
| Number of lenses | 5 | - | - | - |
| Flash type | LED | LED | LED | LED |
| Image resolution | 4208 x 3120 pixels 13.13 MP | 3264 x 2448 pixels 7.99 MP | 2581 x 1936 pixels 5 MP | 3264 x 2448 pixels 7.99 MP |
| Video resolution | 3840 x 2160 pixels 8.29 MP | 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 | 30 fps |
| Features | Autofocus Digital zoom Optical image stabilization Geotagging Panorama HDR Touch focus Face detection White balance settings ISO settings Exposure compensation Scene mode Macro mode | Autofocus Digital zoom Touch focus Face detection | Autofocus Digital zoom Geotagging Touch focus | Autofocus Touch focus |
| 1080p @ 30 fps Blue filter glass | - | - | - |
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.
| Image resolution | 2592 x 1944 pixels 5.04 MP | 1600 x 1200 pixels 1.92 MP | 640 x 480 pixels 0.31 MP | 1600 x 1200 pixels 1.92 MP |
| Video resolution | 1920 x 1080 pixels 2.07 MP | 1280 x 720 pixels 0.92 MP | 640 x 480 pixels 0.31 MP | 800 x 480 pixels 0.38 MP |
| Video FPS | 30 fps | 30 fps | 30 fps | 30 fps |
Audio
Information about the type of speakers and the audio technologies supported by the device.
| Speaker | Loudspeaker Earpiece | Loudspeaker Earpiece | Loudspeaker Earpiece | Loudspeaker Earpiece |
| Asahi Kasei AK4961 DTS | - | - | - |
Radio
The radio in a mobile device is a built-in FM radio receiver.
| Radio | Yes | Yes | Yes | Yes |
Tracking/Positioning
Information about the positioning and navigation technologies supported by the device.
| Tracking/Positioning | GPS A-GPS | GPS A-GPS EPO | GPS A-GPS | GPS A-GPS |
Wi-Fi
Wi-Fi is a technology that provides wireless data connections between various devices within a short range.
| Wi-Fi | 802.11b 802.11g 802.11n 802.11n 5GHz 802.11ac Dual band Wi-Fi Hotspot Wi-Fi Direct | 802.11b 802.11g 802.11n Wi-Fi Hotspot | 802.11b 802.11g 802.11n Wi-Fi Hotspot | 802.11b 802.11g 802.11n |
Bluetooth
Bluetooth is a standard for secure wireless data transfer between different types of devices over short distances.
| Version | 4.0 | 4.0 | 3.0 | 4.0 |
| Features | A2DP | A2DP | A2DP | 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 | Micro USB | Micro USB |
| Version | 2.0 | 2.0 | 2.0 | 2.0 |
| Features | Charging Mass storage On-The-Go | Charging Mass storage | 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 | Yes | Yes | Yes | Yes |
Connectivity
Information about other important connectivity technologies supported by the devices.
| Connectivity | Computer sync OTA sync Tethering DLNA | Computer sync OTA sync Tethering DLNA | Computer sync OTA sync Tethering | Computer sync OTA sync DLNA |
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 AMR-WB FLAC MIDI MP3 WMA WAV | AAC AMR eAAC+ MP3 WMA WAV | AAC AMR eAAC+ MIDI MP3 OGG WMA WAV | AAC AMR MP3 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 | H.263 H.264 MPEG-4 | 3GPP H.263 H.264 MP4 | H.263 H.264 MPEG-4 | 3GPP H.263 H.264 MPEG-4 |
Battery
The batteries of mobile devices differ in capacity and technology. They provide the electrical charge needed for the functioning of the devices.
| Capacity | 2300 mAh | 2600 mAh | 2600 mAh | 2500 mAh |
| Type | Li-Ion | Li-Polymer | Li-Ion | Li-Ion |
| 2G talk time | 30 h 1800 min 1.3 days | - | - | - |
| 2G stand-by time | 580 h 34800 min 24.2 days | - | - | - |
| 3G talk time | 30 h 1800 min 1.3 days | - | - | - |
| 3G stand-by time | 580 h 34800 min 24.2 days | - | - | - |
| Features | Non-removable | Removable | Removable | Removable |
| nubia Z7 mini | Uniscope US828 | BLU Dash 5.5 | Coolpad 8729 |