Lenovo K4 Note musicphone with Dolby Atmos technology and VR headset is officially launched in India. Additional cameras are usually mounted above the device screen and are used mainly for video conversations, gesture recognition, etc.
After much deliberation, Lenovo has launched the K4 Note smartphone, which is an upgraded version of the K3 Note launched last year. Lenovo Vibe K4 Note comes with a number of updates such as a new design, a fingerprint scanner and more.
Chinese manufacturer Lenovo has received about half a million registrations for the Lenovo K4 Note sale. The company sold 60,000 units of Lenovo K4 Note in just one day of sales on Amazon India.
Considering the big excitement in India, we have no doubt that the Lenovo K4 Note will be popular in the Russian market. We have chosen 5 advantages and 5 disadvantages of the new smartphone.
5 advantages of Lenovo K4 Note
TheaterMax
Lenovo K4 Note comes with a new feature called TheaterMax, which is responsible for transforming multimedia content into virtual reality. This feature allows users to watch movies and play games in virtual reality.
Fingerprint's scanner
Every flagship smartphone these days comes with a fingerprint scanner and the Lenovo K4 Note is no exception.
3 GB RAM
The Lenovo K4 Note is equipped with 3GB of RAM, while its successor, the Lenovo K3 Note, only had 2GB of RAM. Thanks to 3 GB of RAM, the smartphone will be even faster and multitasking.
NFC
Near Field Communication (NFC) technology is a unique feature of expensive smartphones. However, Lenovo offers NFC in the K4 Note, and the smartphone comes at a relatively low price.
Dual front speakers
Lenovo K4 Note comes with dual front-facing speakers that enhance the sound quality.
5 disadvantages of Lenovo K4 Note
Software
Lenovo K4 Note runs on Android 5.1 Lollipop. However, we expect Lenovo to release an update to the latest version of the operating system soon.
Overheating problems
The smartphone generates a lot of heat during gaming and multitasking. And, although this problem is not catastrophic, users will feel warm while playing games or watching videos over a 3G network.
Unnecessary applications
The Lenovo K4 Note smartphone comes with pre-installed applications. These applications are unnecessary because they constantly run in the background, take up memory on the phone, and also reduce the performance of the device.
No fast charging feature
Lenovo K4 Note was left without one key feature - fast charging. Almost all flagships on the market come with this feature, and we believe that this is a big omission on the part of the Chinese company.
Lack of sensors
The smartphone is not equipped with an infrared sensor and a gyroscope, which is also a significant drawback.
Information about the make, model, and alternative names of the specific device, if available.
Design
Information about the dimensions and weight of the device, presented in different units of measurement. Materials used, colors offered, certificates.
| Width Width information - refers to the horizontal side of the device in its standard orientation during use. | 76.5 mm (millimeters) 7.65 cm (centimeters) 0.25 ft (feet) 3.01 in (inches) |
| Height Height information - refers to the vertical side of the device in its standard orientation during use. | 153.6 mm (millimeters) 15.36 cm (centimeters) 0.5 ft (feet) 6.05 in (inches) |
| Thickness Information about the thickness of the device in different units of measurement. | 9.15 mm (millimeters) 0.92 cm (centimeters) 0.03 ft (feet) 0.36 in (inches) |
| Weight Information about the weight of the device in different units of measurement. | 158 g (grams) 0.35 lbs 5.57 oz (ounces) |
| Volume The approximate volume of the device, calculated based on the dimensions provided by the manufacturer. Refers to devices with the shape of a rectangular parallelepiped. | 107.52 cm³ (cubic centimeters) 6.53 in³ (cubic inches) |
| Colors Information about the colors in which this device is offered for sale. | Black White |
| Materials for making the case Materials used to make the device body. | Polycarbonate |
SIM card
The SIM card is used in mobile devices to store data that certifies the authenticity of mobile service subscribers.
Mobile networks
A mobile network is a radio system that allows multiple mobile devices to communicate with each other.
| GSM GSM (Global System for Mobile Communications) is designed to replace the analogue mobile network (1G). For this reason, GSM is often called a 2G mobile network. It is improved by the addition of GPRS (General Packet Radio Services), and later EDGE (Enhanced Data rates for GSM Evolution) technologies. | GSM 850 MHz GSM 900 MHz GSM 1800 MHz GSM 1900 MHz |
| UMTS UMTS is an abbreviation for Universal Mobile Telecommunications System. It is based on the GSM standard and belongs to 3G mobile networks. Developed by 3GPP and its biggest advantage is providing greater speed and spectral efficiency thanks to W-CDMA technology. | UMTS 850 MHz UMTS 900 MHz UMTS 1900 MHz UMTS 2100 MHz |
| LTE LTE (Long Term Evolution) is defined as a fourth generation (4G) technology. It is developed by 3GPP based on GSM/EDGE and UMTS/HSPA to increase the capacity and speed of wireless mobile networks. The subsequent technology development is called LTE Advanced. | LTE 800 MHz LTE 850 MHz LTE 900 MHz LTE 1800 MHz LTE 2100 MHz LTE 2600 MHz LTE-TDD 2300 MHz (B40) LTE-TDD 2500 MHz (B41) |
Mobile communication technologies and data transfer speeds
Communication between devices on mobile networks is carried out using technologies that provide different data transfer rates.
Operating system
An operating system is a system software that manages and coordinates the operation of hardware components in a device.
SoC (System on Chip)
A system on a chip (SoC) includes all the most important hardware components of a mobile device on one chip.
| SoC (System on Chip) A system on a chip (SoC) integrates various hardware components, such as a processor, graphics processor, memory, peripherals, interfaces, etc., as well as the software necessary for their operation. | MediaTek MT6753 |
| Technological process Information about the technological process by which the chip is manufactured. Nanometers measure half the distance between elements in the processor. | 28 nm (nanometers) |
| Processor (CPU) The primary function of a mobile device's processor (CPU) is to interpret and execute instructions contained in software applications. | ARM Cortex-A53 |
| Processor size The size (in bits) of a processor is determined by the size (in bits) of the registers, address buses, and data buses. 64-bit processors have higher performance compared to 32-bit processors, which in turn are more powerful than 16-bit processors. | 64 bit |
| Instruction Set Architecture Instructions are commands with which the software sets/controls the operation of the processor. Information about the instruction set (ISA) that the processor can execute. | ARMv8-A |
| Level 1 cache (L1) Cache memory is used by the processor to reduce access time to more frequently used data and instructions. L1 (level 1) cache is small in size and works much faster than both system memory and other cache levels. If the processor does not find the requested data in L1, it continues to look for it in the L2 cache. On some processors, this search is performed simultaneously in L1 and L2. | 32 kB + 32 kB (kilobytes) |
| Level 2 cache (L2) L2 (level 2) cache is slower than L1 cache, but in return it has a higher capacity, allowing it to cache more data. It, like L1, is much faster than system memory (RAM). If the processor does not find the requested data in L2, it continues to look for it in the L3 cache (if available) or in RAM memory. | 512 kB (kilobytes) 0.5 MB (megabytes) |
| Number of processor cores The processor core executes software instructions. There are processors with one, two or more cores. Having more cores increases performance by allowing multiple instructions to be executed in parallel. | 8 |
| CPU clock speed The clock speed of a processor describes its speed in terms of cycles per second. It is measured in megahertz (MHz) or gigahertz (GHz). | 1500 MHz (megahertz) |
| Graphics Processing Unit (GPU) The Graphics Processing Unit (GPU) handles calculations for various 2D/3D graphics applications. In mobile devices, it is most often used by games, consumer interfaces, video applications, etc. | ARM Mali-T720 MP3 |
| Number of GPU cores Like a CPU, a GPU is made up of several working parts called cores. They handle graphics calculations for various applications. | 3 |
| GPU clock speed Running speed is the clock speed of the GPU, measured in megahertz (MHz) or gigahertz (GHz). | 450 MHz (megahertz) |
| Amount of random access memory (RAM) Random access memory (RAM) is used by the operating system and all installed applications. Data stored in RAM is lost after the device is turned off or restarted. | 3 GB (gigabytes) |
| Type of random access memory (RAM) Information about the type of random access memory (RAM) used by the device. | LPDDR3 |
| Number of RAM channels Information about the number of RAM channels that are integrated into the SoC. More channels mean higher data rates. | Single channel |
| RAM frequency The frequency of RAM determines its operating speed, more specifically, the speed of reading/writing data. | 666 MHz (megahertz) |
Built-in memory
Each mobile device has built-in (non-removable) memory with a fixed capacity.
Memory cards
Memory cards are used in mobile devices to increase the storage capacity for storing data.
Screen
The screen of a mobile device is characterized by its technology, resolution, pixel density, diagonal length, color depth, etc.
| Type/technology One of the main characteristics of the screen is the technology by which it is made and on which the quality of the information image directly depends. | IPS |
| Diagonal For mobile devices, screen size is expressed by the length of its diagonal, measured in inches. | 5.5 in (inches) 139.7 mm (millimeters) 13.97 cm (centimeters) |
| Width Approximate screen width | 2.7 in (inches) 68.49 mm (millimeters) 6.85 cm (centimeters) |
| Height Approximate screen height | 4.79 in (inches) 121.76 mm (millimeters) 12.18 cm (centimeters) |
| Aspect Ratio The ratio of the dimensions of the long side of the screen to its short side | 1.778:1 16:9 |
| Permission Screen resolution shows the number of pixels vertically and horizontally on the screen. Higher resolution means clearer image detail. | 1080 x 1920 pixels |
| Pixel Density Information about the number of pixels per centimeter or inch of the screen. Higher density allows information to be displayed on the screen with clearer detail. | 401 ppi (pixels per inch) 157 ppcm (pixels per centimeter) |
| Color depth Screen color depth reflects the total number of bits used for color components in one pixel. Information about the maximum number of colors that the screen can display. | 24 bit 16777216 flowers |
| Screen area Approximate percentage of screen area occupied by the screen on the front of the device. | 71.2% (percent) |
| Other characteristics Information about other screen features and characteristics. | Capacitive Multi-touch Scratch resistance |
| Corning Gorilla Glass 3 1000:1 contrast ratio 450 cd/m² Viewing angle - 178° |
Sensors
Different sensors perform different quantitative measurements and convert physical indicators into signals that a mobile device can recognize.
Main camera
The main camera of a mobile device is usually located on the back of the body and is used for taking photos and videos.
| Sensor model | Samsung S5K3M2 |
| Sensor type | ISOCELL |
| Sensor size | 4.69 x 3.52 mm (millimeters) 0.23 in (inches) |
| Pixel size | 1.127 µm (micrometers) 0.001127 mm (millimeters) |
| Crop factor | 7.38 |
| Diaphragm | f/2.2 |
| Flash type The most common types of flashes in mobile device cameras are LED and xenon flashes. LED flashes produce softer light and, unlike brighter xenon flashes, are also used for video shooting. | Double LED |
| Image Resolution One of the main characteristics of mobile device cameras is their resolution, which shows the number of horizontal and vertical pixels in the image. | 4160 x 3120 pixels 12.98 MP (megapixels) |
| Video resolution Information about the maximum supported resolution when shooting video with the device. | 1920 x 1080 pixels 2.07 MP (megapixels) |
Information about the maximum number of frames per second (fps) supported by the device when shooting video at the maximum resolution. Some of the main standard video shooting and playback speeds are 24p, 25p, 30p, 60p. | 30fps (frames per second) |
| Characteristics Information about other software and hardware features related to the main camera and improving its functionality. | Autofocus Continuous shooting Digital zoom Digital image stabilization Geographical tags Panoramic photography HDR shooting Touch Focus Face recognition White Balance Adjustment ISO Setting Exposure compensation Self-timer Scene Selection Mode |
| Phase detection |
Additional camera
Additional cameras are usually mounted above the device screen and are used mainly for video conversations, gesture recognition, etc.
| Sensor model Information about the manufacturer and model of the photo sensor used in the device's camera. | OmniVision OV5693 |
| Sensor type Digital cameras use photo sensors to take photographs. The sensor, as well as optics, are one of the main factors in the quality of the camera in a mobile device. | CMOS BSI 2 (backside illumination 2) |
| Sensor size Information about the dimensions of the photosensor used in the device. Typically, cameras with larger sensors and lower pixel densities offer higher image quality despite the lower resolution. | 3.67 x 2.74 mm (millimeters) 0.18 in (inches) |
| Pixel size The smaller pixel size of the photosensor allows more pixels per unit area, thereby increasing resolution. On the other hand, a smaller pixel size can have a negative impact on image quality at high ISO levels. | 1.417 µm (micrometers) 0.001417 mm (millimeters) |
| Crop factor The crop factor is the ratio between the dimensions of the full-frame sensor (36 x 24 mm, equivalent to a frame of standard 35 mm film) and the dimensions of the device's photosensor. The indicated number represents the ratio of the diagonals of the full-frame sensor (43.3 mm) and the photosensor of a particular device. | 9.44 |
| Diaphragm Aperture (f-number) is the size of the aperture opening that controls the amount of light reaching the photosensor. A lower f-number means the aperture opening is larger. | f/2.2 |
| Image Resolution Information about the maximum resolution of the additional camera when shooting. In most cases, the resolution of the secondary camera is lower than that of the main camera. | 2592 x 1944 pixels 5.04 MP (megapixels) |
| Video resolution Information about the maximum supported resolution when shooting video with an additional camera. | 1280 x 720 pixels 0.92 MP (megapixels) |
| Video - frame rate/frames per second. Information about the maximum number of frames per second (fps) supported by the secondary camera when shooting video at the maximum resolution. | 30fps (frames per second) |
Audio
Information about the type of speakers and audio technologies supported by the device.
Radio
The radio of the mobile device is a built-in FM receiver.
Location determination
Information about the navigation and location technologies supported by your device.
WiFi
Wi-Fi is a technology that provides wireless communication for transmitting data over close distances between various devices.
Bluetooth
Bluetooth is a standard for secure wireless data transfer between various devices of different types over short distances.
USB
USB (Universal Serial Bus) is an industry standard that allows different electronic devices to exchange data.
Headphone jack
This is an audio connector, also called an audio jack. The most widely used standard in mobile devices is the 3.5mm headphone jack.
Connecting devices
Information about other important connection technologies supported by your device.
Browser
A web browser is a software application for accessing and viewing information on the Internet.
| Browser Information about some of the main characteristics and standards supported by the device's browser. | HTML HTML5 CSS 3 |
Audio file formats/codecs
Mobile devices support different audio file formats and codecs, which respectively store and encode/decode digital audio data.
Video file formats/codecs
Mobile devices support different video file formats and codecs, which respectively store and encode/decode digital video data.
Battery
Mobile device batteries differ from each other in their capacity and technology. They provide the electrical charge necessary for their functioning.
| Capacity A battery's capacity indicates the maximum charge it can hold, measured in milliamp-hours. | 3300 mAh (milliamp-hours) |
| Type The type of battery is determined by its structure and, more precisely, the chemicals used. There are different types of batteries, with lithium-ion and lithium-ion polymer batteries being the most commonly used batteries in mobile devices. | Li-polymer |
| 2G talk time 2G talk time is the period of time during which the battery charge is completely discharged during a continuous conversation on a 2G network. | 23 h (clock) 1380 min (minutes) 1 days |
| 2G latency 2G standby time is the period of time during which the battery charge is completely discharged when the device is in stand-by mode and connected to a 2G network. | 265 h (hours) 15900 min (minutes) 11 days |
| 3G talk time 3G talk time is the period of time during which the battery charge is completely discharged during a continuous conversation on a 3G network. | 22 h (hours) 1320 min (minutes) 0.9 days |
| 3G latency 3G standby time is the period of time during which the battery charge is completely discharged when the device is in stand-by mode and connected to a 3G network. | 265 h (hours) 15900 min (minutes) 11 days |
| 4G latency 4G standby time is the period of time during which the battery charge is completely discharged when the device is in stand-by mode and connected to a 4G network. | 292 h (hours) 17520 min (minutes) 12.2 days |
| Characteristics Information about some additional characteristics of the device's battery. | Fixed |
Yesterday, Lenovo held a press conference in India where it officially unveiled its new smartphone. Lenovo K4 Note. The model replaces last year's Lenovo K3 Note, having received a thoroughly redesigned design and a lot of updates in terms of specifications. The main feature of the Lenovo K4 Note is the Dolby Atmos surround sound technology, which is the first time it has been implemented for a smartphone not only in the mode of listening to music tracks through headphones, but also in the playback mode through speakers. The cost of the model for the Indian market declared by the manufacturing company is 11,998 rupees (approximately $180.
Lenovo K4 Note is equipped with a 5.5-inch FHD display with a resolution of 1920 x 1080 pixels, which is protected from damage by heavy-duty glass Gorilla Glass 3. Pixel density is 441ppi, viewing angle is 178 degrees. Insider information about the presence of a 2K screen on the phablet has not been confirmed, as well as rumors that the device will be built on the MT6752 chipset. Instead, the developers decided to use a new 8-core processor from Mediatek - MT6753 with a clock frequency of 1.3 GHz, which works together with the Mali T720 MP3 graphics accelerator. In addition, the K4 Note received 3 GB of LPDDR3 RAM, an internal flash drive with a capacity of 16 GB and the ability to expand the device’s own memory using removable microSD cards.
The phone body, made of metal, is slightly curved, its maximum thickness is 9.1mm. The phablet is equipped with a fingerprint scanner (the sensor is located on the back of the device). There is also a 13-megapixel main photo module with an f/2.2 aperture, dual LED flash, autofocus and an optical image stabilization system. The front camera is 5-megapixel, with its help you can take quite high-quality selfies. In the upper and lower parts of the front surface of the case you can see perforations, behind the holes of which a pair of powerful speakers (1.5W each) is hidden. They provide surround sound soundtracks thanks to the technology implemented in Lenovo K4 Note Dolby Atmos.
The new product is equipped with a full set of wireless adapters, including NFC, Bluetooth 4.0 LE, Wi-Fi 802.11, A-GPS and 4G LTE modules. The phablet supports dual SIM cards and can distribute Wi-Fi to third-party devices. Battery capacity is 3300mAh, which allows the device to work without recharging in continuous talk mode for up to 22 hours (in standby mode up to 265 hours). The smartphone comes with a pre-installed OS. Overall dimensions of the device - 153.6 x 76.5 x 9.1 mm, its weight - 160 grams.
An interesting addition to the Lenovo K4 Note is the technology TheaterMax, which allows you to convert any multimedia content into VR (virtual reality) format. The manufacturing company, in collaboration with ANT VR, simultaneously with the smartphone, launched a headset-glasses designed for it, which costs 1299 rupees (about $20) if purchased separately. But when ordered together with a phone, its cost will be only 500 rupees (a little more than $7.5). Pre-orders for the Lenovo K4 Note began yesterday on Amazon.in. The first batch of devices bundled with a VR headset will be available to customers at a price of Rs 12,499 ( $ 187 ), cost of Lenovo K4 Note without additional accessory - 180$ .