Name: ASUS ZenFone Selfie ZD551KL CN 3GB 16GB smartphone
Brand: ASUS

Smartphones ASUS ZenFone Selfie ZD551KL CN

Release Date	June 2015
Availability	On sale
Brand	ASUS
Model	ZenFone Selfie ZD551KL CN

Photos

ASUS ZenFone Selfie ZD551KL CN 3GB 16GB smartphone photo 1

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Design & Screen

Color This refers to the outside image of the phone.	Blue, Gold, Gray, Pink, Red, White
Body materials This refers to the materials of which the smartphone's body is made from.	Plastic
Size The vertical x horizontal size of the phone.	77.2 x 156.5 x 10.8 mm (millimeters) 3.04 x 6.16 x 0.43 " (inches)
Weight How much the phone itself weighs.	170 g (grams) 6 oz (ounces)

Screen

Screen size How big the phone display is diagonally (measured in inches/millimeters). The screen size varies from phone to phone. There are small phones with screens of 4 inches to very large phones with screens of 5.8 inches.	5.5 " (inches) 139.7 mm (millimeters)
Display area Of the full size of the phone, how much space does the Display area cover (measured in percentage [%])	68 %
Type Detailed information about the type of display used by the smartphone. There are a few display times such as - LCD (Liquid Crystal Display) - IPS-LCD (In-Plane Switching Liquid Crystal Display) - OLED (Organic Light-Emitting Diode) - AMOLED (Active-Matrix Organic Light-Emitting Diode) The best one is an OLED/AMOLED screen because they consume less power than the LCD ones and the color/pixel density is greater on them.	LCD IPS
Resolution This is the pixel number that a display or a camera sensor has (refers to the digital image of the phone). If the phone has a higher resolution, that means that it has more pixels. If you have more pixels then they can provide the display with the ability of more visual information. So, simply put, the higher the resolution, the better images your phone will be able to give you. The best resolution a phone can have is 4K, Ultra HD (3840 x 2160).	1080x1920 px
Pixel density How much pixels are residing on the display. They are measured in pixels per inch, or PPI. The density of a pixel can be calculated if you divide the pixel resolution in diagonal by the diagonal size of a display. The more pixels you have the better the picture quality your phone will give off.	2x eXtra High density 401 ppi (pixels per inch) 157 ppcm (pixels per centimetre)
Features Refers to what the phone is capable of, its services and what applications it can offer you.	Capacitive Anti-fingerprint coating Multi-touch Corning Gorilla Glass 4 Scratch resistant

Camera

Main camera

Primary camera resolution This is the camera placed on the back of the phone. It's resolution is measured in megapixels (MPX) and the word mega means million. The higher megapixel count you have the better. Nowadays the average megapixel count on a primary camera is 10-12 MPX. The highest megapixel count a phone has to this day is 41 Megapixels.	12.6 Mpx (megapixels)
Flash type Refers to what type of flash the device uses. The most common camera flashes are Xenon, LED and Dual LED. The Xenon flash is mostly used for videos, and the LED flash is mostly used for taking pictures, because it only illuminates a small area.	Dual LED
Sensor Detailed information about the model of the sensor used by the device's camera. There are 2 types of camera sensors: CCD (charged coupled device) and CMOS (complementary metal-oxide-semiconductor). CCD sensor are now older and a bit outdated. The CMOS sensors are more efficient, they require much less power, and are performing better for high-speed burst modes.	Toshiba T4K37
Sensor type	CMOS BSI
Aperture The Aperture of a lens shows us how much light goes through the lense. The bigger the aperture the more light goes through, unlike a small aperture which lets less light in. The Aperture is measured in f-stops. The larger the aperture the smaller the f-stop number.	f/2.0
Slow motion video It is measured in FPS or Frames Per Second. Slow motion refers to the effect of slowing down time. This is achieved in two ways. The first is overcranking which is achieved by taking the normal speed of 10 frames/s and is projected with 30 frames/s. This is slow overcranking. The second is achieved in post production and is less likely to be a feature on a device.	30 fps (frames per second)

Front camera

Selfie camera resolution This is the camera placed on the front of the phone and it is usually used to take "selfies", video calls, face unlock, etc. The average for a selfie camera is 3-5 MPX.	12.6 Mpx (megapixels)

Others features

Features Detailed information about the camera's basic and extra functions and overall performance.	Continuous shooting Autofocus Digital zoom Digital image stabilization Face Detection Exposure compensation Geotagging Front Flash ISO settings HDR Panorama Macro mode Self-timer Scene mode White balance settings Touch focus

Device Hardware

Processing unit

Processor family The name of the processor. There are many proccessor families such as Qualcomm, Samsung, nVidia, Marvell... One of the best by far for a mobile phone is the Qualcomm MSM8998 Snapdragon 835 processor. One of the best phones on the market use Snapdragon processors because they are fast, efficient and with less errors than others.	Qualcomm
SoC (Model) Information about the processor model. The SOC model has two selection kinds. There is the elective selection and the loss-based selection. They both differ in their functionallity. The Elective selection is the delineation of goals so that it can match one person's needs. It aims at achieving higher levels of functioning. On the other hand, loss-based selection is refering to changes in goals like adapting standards or replacing goals that can not be achieved anymore.	Qualcomm Snapdragon 615 MSM8939
64 Bits Information if the device supports 64 Bit proccessing. The 64-bit processor has way more space than a 32-bit processor and can use it to get more data/sec. Basically a 64-bit processor is much faster than the 32-bit one and can run applications and other software twice as fast than the 32-bit.	Yes
CPU CPU or Central Processing Unit is an electronic circuit which executes computer programs. The miniaturization and standardization of processors have substantionally increased their existence beyond the limited application of dedicated computing machines. You can see modern microprocessors in automobiles, mini computers, mobile phones, tablets, etc.	Cortex A53
CPU type Detailed information about the type of processor the device uses. The best processor is an 8 core processor. This means that you can run 8 applications at the same time without the device being slowed down. The average processors that are used in the devices are Quad-core which means that they have 4 cores. The more cores you have the faster your device runs.	Octa-Core 8 cores
Frequency Frequency is the rate that a chip such as the Central Processing Unit or CPU runs and it is used for indicating the speed of the processing unit. The frequency is being measured in ClockCycles/second or hertz and megahertz (Hz and MHz). The higher the smartphone’s frequency, the faster your device runs. The fastest processor speed on a smartphone is 2.7 GHz, but the average smartphone runs at 1.7 - 2.0 GHz.	1.7 GHz (gigahertz) 1700 MHz (megahertz)
Antutu score AnTuTu is used to give your device an overall score as well as an individual score for each test it performs. AnTuTu score performs a test on all the aspects of the Android device like UX, GPU, CPU, RAM, ROM, etc.	39483

Graphics & Memory

GPU The GPU or Graphics Processing Unit, is a specialized circuit that is designed to accelerate the output of an image in a frame buffer and is intended for output to a display. It’s like a second processing unit that helps the CPU with the processing work.	Qualcomm Adreno 405
RAM RAM or Random-Access Memory is the memory in which the software resides when it runs. The RAM is used by the Operating System and the applications. The more RAM you have the faster your applications run. The RAM varies from 1 GB to 6GB on devices. If your device has 6GB of RAM it is deemed very fast.	3 GB (gigabytes)

Storage

Storage space The capacity of the storage on a device. How much information like videos, pictures, applications, movies,songs, etc. you can store on the device. It is measured in gigabytes (Gb) and the capacity varies from 8 GB to 128 GB.	16 GB (gigabytes) ca. equivalent to 2909 Songs 6400 Photos 53 Movies
SD card slot Information that lets you know if the device is capable of recieving external storage. SD card is basically an external storage card on which you can store anything you like. There are SD cards up to 128 gb of storage. So, you would like to have a phone that has an SD card slot.	Yes

Sensors

Detailed information about all of the sensors that the phone uses, all varying in their type and purpose and increasing the overall functionality of the device.

Fingerprint If the device possesses a fingerprint scanner. The fingerprint scanner saves the pattern of your fingerprints and then later uses it to unlock your device, or instead of you typing in long passwords you can just use your fingerprint. With this no one can bypass your device unless they have your fingerprint.	No
Barometer The barometer is used to assisst the GPS chip that is placed inside the device. It assissts it by getting a faster lock and instantly delivers attitude data.	No
Compass This is a digital compass that usually is based on a sensor that's called a magnetometer. This provides your device with simple orientationa simple orientation in relation to Earth's magnetic field. With this your phone will always know which way is North and can auto rotate your digital maps depending on your position.	Yes
Gyroscope This is used to add additional dimension to the accelerometer simply by tracking twist and rotation.	Yes
Hall The hall sensor is used to disable or lock the smartphone's screen when a cover that has magnets in it touches the screen. The benefits of this are that it saves battery life when it disables the screen. This is a very nice option to have on a phone because it will extend the battery lifespan in the long run	Yes
Light This is a electronic device that is used to detect light.	Yes
Proximity sensing It is used to detect when an obejct is near to the device. Commonly used to sense if the device is being held up to the ear by the user so that it can turn off the display. It saves a lot of batter life and prevents accidently touching the screen with your face or ear.	Yes

Software

Operating system Information about which operating system is used by the device. Most common operating systems are Android, iOS and Windows. The most used operating system is the Android and it has an open user interface that you can modify to your needs.	Android 5

Battery

Capacity Information about the capacity of the battery. Measured in Milliamp Hours or mAh. The bigger the mAh the longer your phone stays up and running. The battery capacity varies from 2000 to 4000 mAh.	3000 mAh
Type Detailed information about the type of battery the device uses. There are 4 battery types for mobile phones: Lithium Ion, Lithium Polymer, Nickel Cadmium and Nickel Metal Hydride. Most of the smartphones use the Li-Ion battery type because it is the most lightweight and sufficient battery out there.	Li-Ion

Connectivity

Mobile networks

4G 4G stands for fourth generation and it is a broadband cellular technology that is better than 3G. It has the fastest internet speed at the moment. If you want the best of the best then 4G is for you. It has the fastest data transfer speed at the moment and best mobile reception.	1900, 1800, 2600, 2100, 850, 800, 900
3G 3G stands for third generation of wireless mobile telecommunications technology. It is way better than the 2G. It has much faster internet speed. Not as good as the 4G but it gets the job done. The internet speed is decent, but the mobile reception is way worse than the 4G.	2100, 1900, 900, 850
2G 2G stands for second generation cellular technology. It is the most basic one of them all and has the slowest internet speed. Would not reccommend to anyone, the internet and mobile reception are very bad and it is way outdated than the 3G and 4G.	1900, 1800, 900, 850

SIM card

SIM card form The type of SIM card used by the device. Most common one is the Nano SIM.	Micro SIM + Micro SIM

Wi-Fi

IEEE Standards Wi-Fi is a WLAN (Wireless Local Area Network) technology. It is used to provide high-speed data connections between the data from the mobile, other devices and nearby Wi-Fi access points. The best standart is 802.11b and it offers 150 Mbps internet speed. The more Mbps you have the faster your internet is.	802.11ac 802.11a 802.11g 802.11b
Wi-Fi features Detailed information about the Wi-Fi features the device possesses.	WiFi Direct WiFi Hotspot

Bluetooth

Bluetooth version Information about the version of bluetooth the device uses. There are many bluetooth versions and they all vary in speed, high-speed data broadcasting,transmission distance and compatibility. Bluetooth versions are: Version 1.0, Version 1.1 and 1.2, Version 2.0 and 2.1, Version 3.0, Version 4.0 and 4.1 and Version 5.0.	4.0
Bluetooth features Detailed information about the bluetooth features of the device. This refers to the Bluetooth broadcasting speed, transmition distance and compatibility. The best is Version 5.0 with broadcasting speed faster than 24 mbps, a transmition distance of over 100 meters and you can connect more than one device.

Navigation

Navigation supports Information about which navigation system the device supports. The best smartphones have a GPS sensor built in. This provides you the exact location of the phone signal. You use this when you open Google or Apple maps to navigate yourself through unknown roads. Without this function you wouldn't be able to use maps with high precision.	GLONASS A-GPS GPS

USB

USB Battery Charging If you can charge your smartphone with a usb on a computer. This option lets you charge the battery on your phone by connecting the cable to your phone and the other end you can connect to a USB port on whatever device you want. You can basically charge your phone on your laptop, computer, external battery, TV and many other appliances.	Yes
USB OTG USB OTG or USB on-the-go is a cable that gives a smartphone the possibility to directly connect to other smartphones or tablets. With this cable you can also connect additional hardware like a USB, mouse, keyboard etc.	No
USB Type C USB type c is a new digital connection, unlike the USB 1.1, USB 2.0, USB 3.0 or USB 3.1, this USB-C is the fastest and most improved USB type. It's a better way to charge your smartphone and the data transfering speed is unbelievably fast.	No

Others features

3.5 mm jack If the phone has a 3.5 mm extention to which you can connect your headphones to your smartphone. You can also connect the smartphone to your car's AUX port and listen to any song you like in your car by opening it on the smartphone.	No
NFC NFC or Near Field Communications is a basic feature on smartphones nowadays. It is used to allow smartphones to transfer files or connect with eachother like the bluetooth does, but much simpler and faster. You can use NFC by putting two smartphones close to eachother and they automatically get connected in about 6 seconds.	No
Infrared The infrared is used for short-range data transfer between two phones. It's a very old way of transfering data and it's less and less popular nowadays. Many new smartphones don't have it. You can use the infrared by putting two phones right next to eachother and facing their infrared port to one another, but if you slighlty move them then the connection gets lost. This is why the infrared data transfer is not so good.	No

Price and specifications
ASUS ZenFone Selfie ZD551KL CN 3GB 16GB smartphone

Write your review on the ASUS ZenFone Selfie ZD551KL CN smartphone ZenFone Selfie ZD551KL CN smartphone

Design & Screen

Screen

Camera

Main camera

Front camera

Others features

Device Hardware

Processing unit

Graphics & Memory

Storage

Sensors

Software

Battery

Connectivity

Mobile networks

SIM card

Wi-Fi

Bluetooth

Navigation

USB

Others features

ASUS ZenFone Selfie ZD551KL CN 3GB 16GB smartphone Price comparison

Price and specifications ASUS ZenFone Selfie ZD551KL CN 3GB 16GB smartphone

Write your review on the ASUS ZenFone Selfie ZD551KL CN smartphone ZenFone Selfie ZD551KL CN smartphone

Design & Screen

Screen

Camera

Main camera

Front camera

Others features

Device Hardware

Processing unit

Graphics & Memory

Storage

Sensors

Software

Battery

Connectivity

Mobile networks

SIM card

Wi-Fi

Bluetooth

Navigation

USB

Others features

ASUS ZenFone Selfie ZD551KL CN 3GB 16GB smartphone Price comparison

Price and specifications
ASUS ZenFone Selfie ZD551KL CN 3GB 16GB smartphone