Comparison between:
- Oukitel K4000
- Oukitel U7 Pro
- Cong Shallots Metal Standard Edition
Brand and model
Information about the brand, model and model alias (if any) of a specific device.
| Oukitel K4000 | Oukitel U7 Pro | Cong Shallots Metal Standard Edition | |
 |  |  | |
| Model alias | - | - | Qing Cong Metal Standard Edition C1391 |
Design
Information about the dimensions and weight of the device, shown in different measurement units. Body materials, available colors, certifications.
| Width | 70.5 mm 7.05 cm 0.231 ft 2.776 in | 78.3 mm 7.83 cm 0.257 ft 3.083 in | 76 mm 7.6 cm 0.249 ft 2.992 in |
| Height | 143.5 mm 14.35 cm 0.471 ft 5.65 in | 157.5 mm 15.75 cm 0.517 ft 6.201 in | 150 mm 15 cm 0.492 ft 5.906 in |
| Thickness | 10.5 mm 1.05 cm 0.034 ft 0.413 in | 8.8 mm 0.88 cm 0.029 ft 0.346 in | 8.55 mm 0.855 cm 0.028 ft 0.337 in |
| Weight | 208 g 0.46 lbs 7.34 oz | 206 g 0.45 lbs 7.27 oz | 165 g 0.36 lbs 5.82 oz |
| Volume | 106.23 cm³ 6.45 in³ | 108.52 cm³ 6.59 in³ | 97.47 cm³ 5.92 in³ |
| Colors | White Black | Gray Gold White | Silver Gold |
| Body materials | Metal Plastic | Plastic | Aluminium alloy |
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 | Micro-SIM | Nano-SIM Nano-SIM / microSD |
| Number of SIM cards | 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) | - |
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 850 MHz GSM 900 MHz GSM 1800 MHz GSM 1900 MHz |
| W-CDMA | W-CDMA 900 MHz W-CDMA 2100 MHz | W-CDMA 900 MHz W-CDMA 1900 MHz W-CDMA 2100 MHz | W-CDMA 850 MHz W-CDMA 2100 MHz |
| TD-SCDMA | - | - | TD-SCDMA 1880-1920 MHz TD-SCDMA 2010-2025 MHz |
| LTE | LTE 800 MHz LTE 1800 MHz LTE 2100 MHz LTE 2600 MHz | - | LTE 1800 MHz LTE 2100 MHz LTE 2600 MHz 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 | UMTS EDGE GPRS HSPA+ LTE Cat 4 | UMTS EDGE GPRS HSPA+ | UMTS EDGE GPRS HSPA+ 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) | Android 5.1 Lollipop | Android 5.1 Lollipop | CONG OS (Android) |
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 MT6735P | MediaTek MT6580 | MediaTek MT6753 |
| Process technology | 28 nm | 28 nm | 28 nm |
| CPU | ARM Cortex-A53 | ARM Cortex-A7 | ARM Cortex-A53 |
| CPU bits | 64 bit | 32 bit | 64 bit |
| Instruction set | ARMv8-A | ARMv7 | ARMv8-A |
| Level 1 cache memory (L1) | 32 KB + 32 KB | 32 KB + 32 KB | 32 KB + 32 KB |
| Level 2 cache memory (L2) | 512 KB 0.5 MB | 512 KB 0.5 MB | 512 KB 0.5 MB |
| CPU cores | 4 | 4 | 8 |
| CPU frequency | 1000 MHz | 1300 MHz | 1500 MHz |
| GPU | ARM Mali-T720 MP1 | ARM Mali-400 MP2 | ARM Mali-T720 MP3 |
| GPU cores | 1 | 2 | 3 |
| GPU frequency | 400 MHz | - | 450 MHz |
| RAM capacity | 2 GB | 1 GB | 3 GB |
| RAM type | LPDDR3 | - | LPDDR3 |
| RAM channels | Single channel | Single channel | Single channel |
| RAM frequency | 533 MHz | 533 MHz | 666 MHz |
Storage
Every mobile device has a built-in storage (internal memory) with a fixed capacity.
| Storage | 16 GB | 8 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 | 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 |
| Diagonal size | 5 in 127 mm 12.7 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 | 2.7 in 68.49 mm 6.85 cm | 2.7 in 68.49 mm 6.85 cm |
| Height | 4.36 in 110.69 mm 11.07 cm | 4.79 in 121.76 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 | 1.778:1 16:9 |
| Resolution | 720 x 1280 pixels | 720 x 1280 pixels | 1080 x 1920 pixels |
| Pixel density | 294 ppi 115 ppcm | 267 ppi 104 ppcm | 401 ppi 157 ppcm |
| Color depth | 24 bit 16777216 colors | 24 bit 16777216 colors | 24 bit 16777216 colors |
| Display area | 68.34 % | 67.84 % | 73.39 % |
| Other features | Capacitive Multi-touch Scratch resistant | Capacitive Multi-touch Scratch resistant | Capacitive Multi-touch |
| Corning Gorilla Glass 2.5D curved glass screen | 2.5D curved glass screen | 85% 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 | Proximity Light Accelerometer Compass Fingerprint |
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 | - | OmniVision OV8858 | Samsung |
| Sensor type | CMOS | PureCel | CMOS BSI |
| Sensor size | - | 3.68 x 2.77 mm 0.18 in | - |
| Pixel size | - | 1.127 µm 0.001127 mm | - |
| Crop factor | - | 9.4 | - |
| Aperture | - | - | f/2 |
| Focal length and 35 mm equivalent | - | 3.5 mm 32.9 mm *(35 mm / full frame) | - |
| Number of lenses | - | - | 5 |
| Flash type | LED | LED | LED |
| Image resolution | 3264 x 2448 pixels 7.99 MP | 3264 x 2448 pixels 7.99 MP | 4160 x 3120 pixels 12.98 MP |
| Video resolution | 1280 x 720 pixels 0.92 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 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 Macro mode | Autofocus Continuous shooting Digital zoom Digital image stabilization Geotagging Panorama HDR Touch focus Face detection White balance settings ISO settings Exposure compensation Scene mode | 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 Phase detection autofocus (PDAF) |
| Interpolated resolution - 13 MP | Interpolated resolution - 13 MP | - |
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 | - | GalaxyCore GC2355 | - |
| Sensor type | - | CMOS | - |
| Sensor size | - | 2.8 x 2.1 mm 0.14 in | - |
| Pixel size | - | 1.75 µm 0.001750 mm | - |
| Crop factor | - | 12.36 | - |
| Aperture | f/2 | - | - |
| Image resolution | 1600 x 1200 pixels 1.92 MP | 1600 x 1200 pixels 1.92 MP | 3264 x 2448 pixels 7.99 MP |
| Video resolution | 640 x 480 pixels 0.31 MP | 640 x 480 pixels 0.31 MP | 1920 x 1080 pixels 2.07 MP |
| Video FPS | 30 fps | 30 fps | 30 fps |
| Interpolated resolution - 5 MP | - | - |
Audio
Information about the type of speakers and the audio technologies supported by the device.
| Speaker | Loudspeaker Earpiece | Loudspeaker Earpiece | Loudspeaker Earpiece |
Radio
The radio in a mobile device is a built-in FM radio receiver.
| Radio | Yes | Yes | Yes |
Tracking/Positioning
Information about the positioning and navigation technologies supported by the device.
| Tracking/Positioning | GPS A-GPS | 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 | 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 | 4.0 | 4.0 | 4.0 |
| Features | 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 |
| Version | 2.0 | 2.0 | 2.0 |
| Features | 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 |
Connectivity
Information about other important connectivity technologies supported by the devices.
| Connectivity | Computer sync OTA sync Tethering | Computer sync OTA sync Tethering HotKnot | 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 |
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 M4A MIDI MP3 OGG WMA WAV | AAC AMR eAAC+ FLAC MIDI MP3 OGG WMA WAV | AAC AMR AMR-WB 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 MKV MP4 Xvid | 3GPP AVI MKV MP4 Xvid | 3GPP H.263 H.264 MKV MP4 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 | 4000 mAh | 2500 mAh | 3050 mAh |
| Type | Li-Polymer | Li-Polymer | Li-Polymer |
| 2G talk time | 72 h 4320 min 3 days | 12 h 720 min 0.5 days | - |
| 2G stand-by time | 480 h 28800 min 20 days | 100 h 6000 min 4.2 days | 220 h 13200 min 9.2 days |
| 3G talk time | 70 h 4200 min 2.9 days | 10 h 600 min 0.4 days | - |
| 3G stand-by time | 500 h 30000 min 20.8 days | 100 h 6000 min 4.2 days | 210 h 12600 min 8.8 days |
| 4G stand-by time | - | - | 200 h 12000 min 8.3 days |
| Charger output power | 5 V / 1 A | 5 V / 1 A | - |
| Features | Removable | 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) | 0.572 W/kg | - | - |
| Body SAR (EU) | 0.402 W/kg | - | - |
| Head SAR (USA) | 1.038 W/kg | - | - |
| Body SAR (USA) | 0.671 W/kg | - | - |
| Oukitel K4000 | Oukitel U7 Pro | Cong Shallots Metal Standard Edition |