LG K4 (ARM Cortex-A7) Specifications, Tests and Review

Display
4.5", 854 x 480
Front Camera
2 Megapixel
Main Camera
5 Megapixel
Operating System
Android 5.1 (Lollipop)
Storage
8 GB
RAM
1 GB
Processor
ARM Cortex-A7
Battery
1940 mAh

Other Variants:

A detailed list of technical data, specifications, ratings and expert review of LG K4 (ARM Cortex-A7). Get a comprehensive look at your chosen phone and see if this is the one that will best suit your needs. You can also use the comparison feature to compare with other competing phones.

DESIGN AND DIMENSIONS LG K4 (ARM Cortex-A7)
Product Type Smartphone
Form Factor Touch
Height 131.9 mm Worse than 53 % of phones rated.
Width 66.7 mm Worse than 53 % of phones rated.
Depth 8.9 mm Better than 66 % of phones rated.
Weight 120 g Better than 68 % of phones rated.
Body Colour Indigo blue | White
Waterproof (Water-resistant) -
SAR Value 1.26 W/kg (body), 1.13 W/kg (head)
Integrated Components FM radio
Connector Type Headset jack - mini-phone 3.5mm
Micro-USB - 5 pin Micro-USB Type B
SIM Card Type (Size) Micro SIM

Design of LG K4 (ARM Cortex-A7) has dimensions of 131.9 mm × 66.7 mm × 8.9 mm and weight of 120 g.

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DISPLAY LG K4 (ARM Cortex-A7)
Display Type LCD display
Display Technology IPS
Screen Size (Display Size) 4.5" Worse than 59 % of phones rated.
Screen Resolution (Display Resolution) 854 x 480 pixels Worse than 52 % of phones rated.
Pixel Density 218 ppi Worse than 94 % of phones rated.
Colour Depth 16.7 million colours Better than 98 % of phones rated.

The screen size reaches 4.5" inches. Smaller phone displays are not necessarily a disadvantage. They are easier to use with one hand. However, displays of these sizes don't provide the same experience when watching videos or playing games, so they're better suited for less demanding users. It means, if you're a basic user and you don't expect to use your phone for activities like watching videos or playing games on regular basis, this size is perfectly adequate. LCD displays are currently taking a back seat. This is mainly due to higher power consumption. In addition, they have the disadvantage of lower colour contrast, which can be reflected e.g. in the resulting photos. On the other hand, phones with LCD displays are in general cheaper than those with OLED technology.

Display Resolution of LG K4 (ARM Cortex-A7) is 854 x 480 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. If you want a perfect picture, focus on pixel density in addition to resolution. This number indicates how sharp the image will be. Best phones today have a display fineness of 450 ppi or higher, but the today´s average is around 350-400 ppi. That should be enough for you to enjoy a fine and sharp image. This model has a pixel density of 218 ppi.

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PROCESSOR LG K4 (ARM Cortex-A7)
Processor Type (CPU) ARM Cortex-A7
Clock Speed 1.1 GHz Worse than 78 % of phones rated.
Processor Core Qty Quad-core Worse than 57 % of phones rated.
Graphics System (GPU) Qualcomm ADRENO 304

The processor type of the LG K4 (ARM Cortex-A7) is ARM Cortex-A7. 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. LG K4 (ARM Cortex-A7) is provided with processor´s frequency of 1.1 GHz. Normally today you will find this value between 1.8 and 2.8 GHz, and the higher the number, the faster the response of the phone. The processor frequency will thus be one of the important parameters if you are looking for a phone capable of managing several requests at once without major problems.

The processor also includes the graphics accelerator Qualcomm ADRENO 304.

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MEMORY LG K4 (ARM Cortex-A7)
RAM 1 GB Worse than 61 % of phones rated.
Internal Memory Size (Storage Capacity) 8 GB Worse than 72 % of phones rated.
Supported Flash Memory Cards (Expandable Memory) microSDHC - up to 32 GB

The phone is provided with an internal memory of 8 GB. Internal storage capacity is often a key parameter, as it determines how many files, photos, apps and more your phone can store. 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. Fortunately, manufacturers nowadays think of all users and therefore offer phone models with different memory sizes so that everyone can choose what suits them.

In addition, if you need more memory, this model offers the option of inserting a memory card to increase the storage size.

Operating memory significantly affects the performance of the entire phone. LG K4 (ARM Cortex-A7) has an operating memory of 1 GB. Phones with less than 4 GB of RAM are better suited for undemanding users who use phone more for basic needs and some essential applications only. But if you are a heavy user, reach for at least 6 to 8 GB of RAM, which is the standard today, or 12 GB for the really demanding ones.

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CAMERA LG K4 (ARM Cortex-A7)
MAIN CAMERA
Number of Main Cameras 1
Sensor Resolution 5 Megapixel Worse than 60 % of phones rated.
Lens Aperture F/2.8 Worse than 96 % of phones rated.
Focus Adjustment Automatic
Face Recognition (Face ID) Face detection Better than 79 % of phones rated.
Light Source LED light
Video Resolutions 1280 x 720 (720p)
Camera Features (Functions) Gesture Shutter
FRONT CAMERA
Number of Front Cameras 1
Sensor Resolution (Front) 2 Megapixel Worse than 81 % of phones rated.
Lens Aperture (Front) F/2.8 Worse than 98 % of phones rated.

The rear camera of the LG K4 (ARM Cortex-A7) 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. A high resolution lens alone does not necessarily mean high quality photos. The main lens in this has a resolution of 5 Megapixel. However, if you are looking for perfect photos, in addition to resolution, don't forget to focus on at other parameters such as lens aperture or pixel size. Luminance is one of the main factors determining the quality of a photograph. Commonly today, this value ranges between F/1.8 and F/2.2. However, best photomobiles have an aperture of up to F/1.2. Value indicates how much light passes through the sensor and the lower it is, the better the quality of the photos. Main lens here is equipped with F/2.8. If you like to take photos of people and portraits, you'll appreciate the facial recognition feature. The camera automatically detects face and focuses on it.

Front camera
The front camera of phone LG K4 (ARM Cortex-A7) has one lens. This number of lenses is standard on most smartphones nowadays. The resolution of main lens reaches 2 Megapixel. Again, it should be noted that resolution is not the only factor affecting the quality of the front camera photo. The aperture of main lens is F/2.8.

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BATTERY AND CHARGING LG K4 (ARM Cortex-A7)
Battery Capacity (Battery Size) 1940 mAh Worse than 56 % of phones rated.
Standby Time 510 hours Better than 77 % of phones rated.
Talk Time 1200 minutes Better than 79 % of phones rated.
Run Time Details Talk (GSM): up to 1200 hrs
Talk (WCDMA): up to 540 min
Standby (GSM): up to 510 hrs
Standby (WCDMA): up to 500 hrs
Battery Technology Lithium Ion

The battery size of LG K4 (ARM Cortex-A7) is 1940 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.

Standby time is 510 hours. The value indicates how long your phone will last on a single charge when you are not actively using it. The battery life when making calls is, like standby time, a figure that tells us how long the phone will last on a single charge when making continuous calls. For the LG K4 (ARM Cortex-A7) it is 1200 minutes.

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CELLULAR LG K4 (ARM Cortex-A7)
Technology WCDMA (UMTS) / GSM
Mobile Broadband Generation 4G Better than 88 % of phones rated.
Operating System Android 5.1 (Lollipop)
Navigation GPS, A-GPS, GLONASS

LG K4 (ARM Cortex-A7) supports 4G. 4G connectivity is still common today, although the latest phones already have 5G connectivity. 3G connectivity is now more of a thing of past and can only be found on older models. The phone's operating system is Android 5.1 (Lollipop).

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COMMUNICATIONS LG K4 (ARM Cortex-A7)
Data Transmission GPRS, EDGE, HSDPA, HSUPA, HSPA+, LTE
2G Band 850 GSM, 900 GSM, 1800 GSM, 1900 GSM
Wireless Interface IEEE 802.11b/g/n
Bluetooth Bluetooth 4.1
Bluetooth Profiles A2DP
Messaging Services SMS, MMS

Bluetooth 4.1 makes it easy to connect your phone to other wireless devices such as headphones, speakers, TV or tablet and more.

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MEDIA LG K4 (ARM Cortex-A7)
Supported Digital Audio Standards WAV, MP3, FLAC, eAAC+
Supported Digital Video Standards XviD, MPEG-4, H.264
FEATURES LG K4 (ARM Cortex-A7)
Phone Functions Speakerphone, voice control, call timer, conference call, flight mode, voice dialing, vibrating alert
Sensors Accelerometer, proximity sensor
Additional Phone Features Radio Data Service (RDS), Knock Code function
OTHERS LG K4 (ARM Cortex-A7)
Included Accessories Power adapter

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