Comparison between:
- Unistar X8
- Unistar X7
- Unistar X3
- Unistar U5 Wind
Brand and model
Information about the brand, model and model alias (if any) of a specific device.
| Unistar X8 | Unistar X7 | Unistar X3 | Unistar U5 Wind | |
 |  |  |  |
Design
Information about the dimensions and weight of the device, shown in different measurement units. Body materials, available colors, certifications.
| Width | 70 mm 7 cm 0.23 ft 2.756 in | 70.5 mm 7.05 cm 0.231 ft 2.776 in | 72.5 mm 7.25 cm 0.238 ft 2.854 in | 71.5 mm 7.15 cm 0.235 ft 2.815 in |
| Height | 142 mm 14.2 cm 0.466 ft 5.591 in | 140 mm 14 cm 0.459 ft 5.512 in | 146.5 mm 14.65 cm 0.481 ft 5.768 in | 143 mm 14.3 cm 0.469 ft 5.63 in |
| Thickness | 6.5 mm 0.65 cm 0.021 ft 0.256 in | 9.2 mm 0.92 cm 0.03 ft 0.362 in | 9.2 mm 0.92 cm 0.03 ft 0.362 in | 7.8 mm 0.78 cm 0.026 ft 0.307 in |
| Weight | - | - | - | 160 g 0.35 lbs 5.64 oz |
| Volume | 64.61 cm³ 3.92 in³ | 90.8 cm³ 5.51 in³ | 97.72 cm³ 5.93 in³ | 79.75 cm³ 4.84 in³ |
| Colors | Black | White Brown Blue | White Brown Blue | White Black Yellow Pink Brown Green |
| Body materials | Metal Plastic | - | - | Plastic Metal |
SIM card
The Subscriber Identity Module (SIM) is used in mobile devices for storing data authenticating the subscribers of mobile services.
| 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 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 |
| W-CDMA | - | W-CDMA 850 MHz W-CDMA 1900 MHz W-CDMA 2100 MHz | W-CDMA 850 MHz W-CDMA 1900 MHz W-CDMA 2100 MHz | - |
| TD-SCDMA | - | - | - | TD-SCDMA 1880-1920 MHz TD-SCDMA 2010-2025 MHz |
| LTE | - | LTE 700 MHz Class 17 LTE 800 MHz LTE 850 MHz LTE 1800 MHz LTE 1900 MHz LTE 2100 MHz LTE 2600 MHz | LTE 850 MHz LTE 1800 MHz LTE 1900 MHz LTE 2100 MHz LTE 2600 MHz | - |
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 | UMTS EDGE GPRS HSPA+ LTE | UMTS EDGE GPRS HSPA+ LTE | EDGE GPRS TD-HSDPA |
| - | - | - | TD-HSUPA - 2.2 Mbit/s TD-HSDPA - 2.8 Mbit/s |
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 KitKat | Android 4.4 KitKat | Android 4.4 KitKat | Yun OS (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 MT6732M | MediaTek MT6582 | Qualcomm Snapdragon 400 (MSM8926) | MediaTek MT6582 |
| Process technology | 28 nm | 28 nm | 28 nm | 28 nm |
| CPU | 4x 1.3 GHz ARM Cortex-A53 | 4x 1.3 GHz ARM Cortex-A7 | 4x 1.2 GHz ARM Cortex-A7 | 4x 1.3 GHz ARM Cortex-A7 |
| CPU bits | 64 bit | 32 bit | 32 bit | 32 bit |
| Instruction set | ARMv8-A | ARMv7-A | ARMv7-A | ARMv7-A |
| Level 1 cache memory (L1) | 32 KB + 32 KB | 32 KB + 32 KB | 16 KB + 16 KB | 32 KB + 32 KB |
| Level 2 cache memory (L2) | 512 KB 0.5 MB | 512 KB 0.5 MB | 1024 KB 1 MB | 512 KB 0.5 MB |
| CPU cores | 4 | 4 | 4 | 4 |
| CPU frequency | 1300 MHz | 1300 MHz | 1200 MHz | 1300 MHz |
| GPU | ARM Mali-T760 MP2 | ARM Mali-400 MP2 | Qualcomm Adreno 305 | ARM Mali-400 MP2 |
| GPU cores | 2 | 2 | 1 | 2 |
| GPU frequency | 500 MHz | 500 MHz | 450 MHz | 500 MHz |
| RAM capacity | 1 GB | 1 GB | 1 GB | 1 GB |
| RAM type | LPDDR3 | LPDDR2/LPDDR3 | LPDDR2/LPDDR3 | LPDDR2/LPDDR3 |
| RAM channels | Single 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 | IPS | IPS | IPS |
| Diagonal size | 5 in 127 mm 12.7 cm | 5 in 127 mm 12.7 cm | 5 in 127 mm 12.7 cm | 5 in 127 mm 12.7 cm |
| Width | 2.45 in 62.26 mm 6.23 cm | 2.45 in 62.26 mm 6.23 cm | 2.45 in 62.26 mm 6.23 cm | 2.45 in 62.26 mm 6.23 cm |
| Height | 4.36 in 110.69 mm 11.07 cm | 4.36 in 110.69 mm 11.07 cm | 4.36 in 110.69 mm 11.07 cm | 4.36 in 110.69 mm 11.07 cm |
| Aspect ratio | 1.778:1 16:9 | 1.778:1 16:9 | 1.778:1 16:9 | 1.778:1 16:9 |
| Resolution | 540 x 960 pixels | 540 x 960 pixels | 540 x 960 pixels | 720 x 1280 pixels |
| Pixel density | 220 ppi 86 ppcm | 220 ppi 86 ppcm | 220 ppi 86 ppcm | 294 ppi 115 ppcm |
| Color depth | 24 bit 16777216 colors | 24 bit 16777216 colors | 24 bit 16777216 colors | 24 bit 16777216 colors |
| Display area | 69.56 % | 70.05 % | 65.1 % | 67.62 % |
| Other features | Capacitive Multi-touch | Capacitive Multi-touch | Capacitive Multi-touch | Capacitive Multi-touch |
| OGS (One Glass Solution) | OGS (One Glass Solution) | OGS (One Glass Solution) | - |
Sensors
Different sensors measure different physical quantities and convert them into signals recognizable by the mobile device.
| Sensors | Proximity Light Accelerometer | Proximity Light Accelerometer | 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 | - |
| Aperture | - | - | - | f/2 |
| Flash type | LED | LED | LED | LED |
| Image resolution | 4128 x 3096 pixels 12.78 MP | 3264 x 2448 pixels 7.99 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 | 1920 x 1080 pixels 2.07 MP |
| Video FPS | 30 fps | - | 30 fps | 30 fps |
| Features | Autofocus Geotagging | Autofocus Geotagging Touch focus Face detection | Autofocus Geotagging | Autofocus Geotagging Touch focus Face detection |
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 | 2560 x 1920 pixels 4.92 MP | 1600 x 1200 pixels 1.92 MP | 1600 x 1200 pixels 1.92 MP | 1600 x 1200 pixels 1.92 MP |
Audio
Information about the type of speakers and the audio technologies supported by the device.
| Speaker | Loudspeaker Earpiece | Loudspeaker Earpiece | Loudspeaker Earpiece | Loudspeaker Earpiece |
Radio
The radio in a mobile device is a built-in FM radio receiver.
| Radio | - | - | - | Yes |
Tracking/Positioning
Information about the positioning and navigation technologies supported by the device.
| Tracking/Positioning | GPS A-GPS | GPS A-GPS | 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 Wi-Fi Hotspot | 802.11b 802.11g 802.11n Wi-Fi Hotspot Wi-Fi Direct | 802.11b 802.11g 802.11n Wi-Fi Hotspot Wi-Fi Direct | 802.11b 802.11g 802.11n Wi-Fi Hotspot Wi-Fi Direct |
Bluetooth
Bluetooth is a standard for secure wireless data transfer between different types of devices over short distances.
| Version | 4.0 | 4.0 | 4.0 | 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 | 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 | Computer sync OTA sync Tethering | Computer sync OTA sync Tethering | Computer sync OTA sync Tethering |
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+ MP3 WMA WAV | AAC AMR eAAC+ MP3 WAV | AAC AMR eAAC+ MP3 WMA WAV | AAC eAAC+ 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 | 3GPP H.263 H.264 MPEG-4 | 3GPP AVI MPEG-4 | 3GPP H.263 H.264 MPEG-4 | 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 | 2200 mAh | 2200 mAh | 2200 mAh | 2200 mAh |
| Type | Li-Ion | Li-Ion | Li-Ion | Li-Ion |
| 2G talk time | - | 12 h 720 min 0.5 days | 12 h 720 min 0.5 days | - |
| 2G stand-by time | - | 96 h 5760 min 4 days | 96 h 5760 min 4 days | - |
| 3G talk time | - | 12 h 720 min 0.5 days | - | - |
| 3G stand-by time | - | 96 h 5760 min 4 days | - | - |
| Features | Removable | Removable | Removable | Removable |
| Unistar X8 | Unistar X7 | Unistar X3 | Unistar U5 Wind |