ASUS ZenFone Zoom (ZX551ML) Specifications, Tests and Review

Display
5.5", 1920 x 1080
Front Camera
5 Megapixel
Main Camera
13 Megapixel
Operating System
Android 5.0 (Lollipop)
Storage
32 GB
RAM
4 GB
Processor
Intel Atom
Battery
3000 mAh

Complete technical specifications, details, expert ratings and review of ASUS ZenFone Zoom (ZX551ML). Find out how your chosen phone stacks up against the competition and whether it's the one that best meets your expectations with the phone comparison feature.

ASUS ZenFone Zoom (ZX551ML) Full Specifications and Details

design and dimensions display processor memory camera battery and charging cellular communications features others

DESIGN AND DIMENSIONS ASUS ZenFone Zoom (ZX551ML)
Product Type Smartphone
Manufacturer Model Number ZX551ML
Form Factor Touch
Height 158.9 mm Better than 85 % of phones rated.
Width 78.8 mm Better than 96 % of phones rated.
Depth 12 mm Worse than 59 % of phones rated.
Weight 185 g Worse than 81 % of phones rated.
Body Colour Ceramic white | Pure black
Waterproof (Water-resistant) -
SAR Value 0.432 W/kg (body), 0.343 W/kg (head)
Connector Type Headset jack - mini-phone 3.5mm
Micro-USB - 5 pin Micro-USB Type B
SIM Card Type (Size) Micro SIM

The ASUS ZenFone Zoom (ZX551ML) has a height of 158.9 mm, a width of 78.8 mm and a thickness of 12 mm. The weight of the phone is 185 g.

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DISPLAY ASUS ZenFone Zoom (ZX551ML)
Display Type LCD display
Display Technology IPS
Screen Size (Display Size) 5.5" Better than 69 % of phones rated.
Screen Resolution (Display Resolution) 1920 x 1080 pixels Better than 79 % of phones rated.
Display Format Full HD
Pixel Density 401 ppi Better than 50 % of phones rated.
Colour Depth 16.7 million colours Better than 98 % of phones rated.
Display Protection (Screen Protector) Corning Gorilla Glass 4 (scratch resistant glass)

The screen size reaches 5.5" inches. With a large display, phone offers a great experience for watching videos, playing games and reading. The best phones today are 6.5'' or more. They have the advantage of a large display area that allows you to see more content than with conventional display sizes. The disadvantage of LCD displays is the relatively lower color contrast displayed, as the technology cannot display absolute black well. Also due to the higher power consumption, LCD displays are no longer as common in phones. Even so, some manufacturers still equip their phones with LCD technology. However, modern smartphones are already using OLED technology. The advantage of LCD phones is that they tend to be cheaper to build than OLED technology.

Display Resolution of ASUS ZenFone Zoom (ZX551ML) is 1920 x 1080 pixels. A higher display resolution is a prerequisite for a sharper image. The standard for mid-range phones today is a Full HD resolution of 1920 × 1080 px. Cheaper phones, which usually have a smaller diagonal, have an HD resolution of 1280 × 720 px. Smaller resolutions can only be found in older models. Best phones, on the other hand, have a 4K resolution of 3840 x 2160 px. Display´s pixel density is 401 ppi and represents another significant factor affecting image sharpness besides resolution. The higher the value, the sharper the image. Average value is currently about 350-400 ppi, which guarantees a fine and sufficiently sharp image. Finest modern phone displays reach 450 ppi and above.

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PROCESSOR ASUS ZenFone Zoom (ZX551ML)
Processor Type (CPU) Intel Atom
Processor Number Z3590
Clock Speed 2.5 GHz Better than 89 % of phones rated.
Processor Core Qty Quad-core Worse than 57 % of phones rated.
Graphics System (GPU) PowerVR G6430

ASUS ZenFone Zoom (ZX551ML) is equipped with Intel Atom. The number of processor cores is 4. It is a number of cores that plays an important role in evaluating the performance of phone as it is responsible for computing operations. Smartphones already commonly have a core count of around 4 to 8. Multi-core processors can perform better and reduce the processing time of a request to a minimum, which is reflected in the responsiveness of the phone, e.g. in the speed of opening applications. The processor frequency indicates how many instructions phone can process in 1 second. The higher the frequency, the better the performance. Standard processor frequency range today is between 1.8 GHz and 2.8 GHz. ASUS ZenFone Zoom (ZX551ML) reaches the frequency of 2.5 GHz.

The processor also includes the graphics accelerator PowerVR G6430.

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MEMORY ASUS ZenFone Zoom (ZX551ML)
RAM 4 GB Better than 78 % of phones rated.
Internal Memory Size (Storage Capacity) 32 GB Better than 62 % of phones rated.
Supported Flash Memory Cards (Expandable Memory) microSDHC, microSDXC - up to 128 GB

The phone´s internal memory capacity is 32 GB. The size of the internal storage determines e.g., how many photos, songs, movies, or applications you can store on your phone. This memory capacity is ideal for those who have a few basic apps and a few dozen photos on their phone. If you don't expect to use your phone to play games or need to store high-resolution photos, this size should be sufficient. There is almost no probability you're likely to see this low capacity on new smartphones. The standard memory today is around 64 and 128 GB. The best phones have internal memory of 256 GB or more. Luckily, most smartphone manufacturers nowadays offer models with different memory sizes to suit every user.

An additional option to increase the storage capacity of this model is to insert a memory card.

RAM memory of the ASUS ZenFone Zoom (ZX551ML) is 4 GB. Most powerful phones currently have an operating memory of 12 GB or more, which is especially useful for demanding users such as gaming enthusiasts. Normally, phones nowadays have 6 to 8 GB of RAM, which means that the phone can easily handle normal operation and more demanding applications. Operating memory of less than 4 GB is found in lower-end phones or older models, and they are suitable for low-end users who don't use demanding applications and have the phone more for basic use.

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CAMERA ASUS ZenFone Zoom (ZX551ML)
MAIN CAMERA
Number of Main Cameras 1
Sensor Resolution 13 Megapixel Better than 78 % of phones rated.
Lens Aperture F/2.7-4.8 Worse than 96 % of phones rated.
Optical Image Stabiliser (OIS) Optical Image Stabiliser (OIS) Better than 87 % of phones rated.
Focus Adjustment Automatic
Laser Auto Focus Yes
Digital Zoom 3x Worse than 83 % of phones rated.
HDR Mode Auto HDR mode
Camera Modes Panorama
Face Recognition (Face ID) Face detection Better than 79 % of phones rated.
Light Source Dual LED flash
Video Resolutions 1920 x 1080 (1080p)
FRONT CAMERA
Number of Front Cameras 1
Sensor Resolution (Front) 5 Megapixel Worse than 55 % of phones rated.
Lens Aperture (Front) F/2.0 Better than 89 % of phones rated.

The rear camera of the ASUS ZenFone Zoom (ZX551ML) has only one lens. Single lens is more typical for older phones or lower-end phones with lower quality cameras. The rear cameras of modern phones nowadays are usually equipped with two, three and sometimes even five rear camera lenses. The resolution of the main lens is 13 Megapixel. Higher resolution does not necessarily mean super high quality photos. Furthermore, it depends on the pixel size but also on other important factors. The aperture of main lens reaches F/2.7-4.8 value. The best phones have a lens with an aperture of up to F/1.5, where more light can pass through sensor and photos will be of a high quality even in low light conditions. However, lenses with apertures around F/1.8 to F/2.2 are the most common. The lower the number after the slash, the better the photo quality.

Digital zoom in this case offers zooming up to 3x. Of course, the higher the lens value, the more distant object can be zoomed in. Nonetheless, the disadvantage of digital zoom is that the quality and sharpness of photo deteriorates when using it. An undeniable advantage is the optical image stabilisation, which makes image significantly more stable without any loss in quality. Cheaper phone models are equipped with electronic stabilisation, which has a negative effect on the resulting image quality. Some users will also appreciate facial recognition feature, which allows camera to recognise the face of person in frame and automatically focus on it.

Front camera
The front camera of phone ASUS ZenFone Zoom (ZX551ML) has one lens. This number of lenses is standard on most smartphones nowadays. The resolution of front lens reaches 5 Megapixel. Again, it should be noted that resolution is only one of several other significant factors that affect resulting quality of a photo. The main lens is also equipped with aperture of F/2.0.

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BATTERY AND CHARGING ASUS ZenFone Zoom (ZX551ML)
Battery Capacity (Battery Size) 3000 mAh Better than 69 % of phones rated.
Battery Technology Lithium polymer

The battery size of ASUS ZenFone Zoom (ZX551ML) is 3000 mAh. Nevertheless, battery capacity is not the only factor that affects the phone's battery life. For example - the size of the display, the performance of the processor, the use of data functions and, of course, the intensity of use of phone in general all have a significant impact on battery life. Standard for most smartphones today is a battery capacity of around 4500 to 5000 mAH. Phones with this battery size usually guarantee a phone life of at least 1 day. Older or cheaper smartphone models can then reach battery capacities typically around 2500 mAH and below. With this capacity, you may find that if you use your phone heavily, you may need to recharge your phone during the day.

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CELLULAR ASUS ZenFone Zoom (ZX551ML)
Technology WCDMA (UMTS) / GSM
Mobile Broadband Generation 4G Better than 88 % of phones rated.
Operating System Android 5.0 (Lollipop)
User Interface ASUS ZenUI 2.0
Navigation A-GPS, GLONASS, BeiDou

ASUS ZenFone Zoom (ZX551ML) supports 4G. 5G connectivity, which is slowly replacing standard 4G connectivity, is still more the preserve of the latest phones. The operating system in this case is Android 5.0 (Lollipop).

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COMMUNICATIONS ASUS ZenFone Zoom (ZX551ML)
Data Transmission GPRS, EDGE, HSDPA, HSUPA, HSPA+, LTE
2G Band 850 GSM, 1800 GSM, 1900 GSM
4G LTE Band Band 1, Band 2, Band 3, Band 5, Band 7, Band 8, Band 9, Band 18, Band 19, Band 28
4G LTE Frequency FDD 2100, FDD 1900 PCS, FDD 1800+, FDD 850, FDD 2600, FDD 900, FDD 1800, FDD 800 lower, FDD 800 upper, FDD 700 APT
Wireless Interface IEEE 802.11a/b/g/n/ac
Bluetooth Bluetooth 4.0
Bluetooth Profiles A2DP
NFC Yes Better than 66 % of phones rated.
Messaging Services SMS, MMS

Fans of modern technology will appreciate NFC function, which allows, among other things, contactless mobile phone payments, but also finds other uses in connectivity, such as unlocking the door or loading the menu in restaurant using the NFC tag. Basic connectivity standards also include Bluetooth 4.0, making it easy to communicate wirelessly with other devices such as headphones, tablets, speakers and smartwatches.

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FEATURES ASUS ZenFone Zoom (ZX551ML)
Phone Functions Speakerphone, call timer, conference call, vibrating alert
Sensors Accelerometer, proximity sensor, digital compass, gyro sensor
Additional Phone Features Multitasking
OTHERS ASUS ZenFone Zoom (ZX551ML)
Included Accessories Power adapter

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