Smartphone In Bangladesh
Android is the product of the world’s most popular
technology company Google. Android is the most popular OS around the world.
Users like Android for its easy and customize-able features. Google Play Store
is also plus point of Android because you can easily search and download any
Apps from here for free. They are updating OS version day by their nest version
is.
One of the main characteristics of smartphones is
the screen. Depending on the device's design, the screen fills most or nearly
all of the space on a device's front surface. Many smartphone displays have an
aspect ratio of 16:9, but taller aspect ratios became more common in 2017.
Screen sizes are measured in diagonal inches. Phones with
screens larger than 5.2 inches are often called "phablets".
Smartphone with screens over 4.5 inches in size are commonly difficult to use
with only a single hand since most thumbs cannot reach the entire screen
surface; they may need to be shifted around in the hand, held in one hand and
manipulated by the other, or used in place with both hands. Due to design
advances, some modern Smartphone with large screen sizes and
"edge-to-edge" designs have compact builds that improve their
ergonomics, while the shift to taller aspect ratios has resulted in phones that
have larger screen sizes whilst maintaining the ergonomics associated with
smaller 16:9 displays.
Some audio-quality enhancing features, such as Voiceover
LTE and HD Voice have appeared and are often available on newer smartphones.
Sound quality can remain a problem due to the design of the phone, the quality
of the cellular network, and compression algorithms used in long-distance
calls. Audio quality can be improved using a VoIP application over WiFi.
Cellphones have small speakers so that the user can use a speakerphone feature
and talk to a person on the phone without holding it to their ear. The small
speakers can also be used to listen to digital audio files of music or speech or
watch videos with an audio component, without holding the phone close to the
ear.
Cameras have become standard features of smartphones. As of
2019 phone cameras are now a highly competitive area of differentiation between
models, with advertising campaigns commonly based on a focus on the quality or
capabilities of a device's main cameras.
Typically smartphones have at least one main rear-facing
camera and a lower-resolution front-facing camera for "selfies" and
video chat. Owing to the limited depth available in smartphones for image
sensors and optics, rear-facing cameras are often housed in a "bump"
that's thicker than the rest of the phone. Since increasingly thin mobile phones
have more abundant horizontal space than the depth that is necessary and used
in dedicated cameras for better lenses, there's additionally a trend for phone
manufacturers to include multiple cameras, with each optimized for a different
purpose (telephoto, wide-angle, etc.).
Images are usually saved in the JPEG file format; some
high-end phones also have RAW image capability.
Modern advanced smartphones have cameras with optical image
stabilization (OIS), larger sensors, bright lenses, and even optical zoom plus
RAW images. HDR, "Bokeh mode" with multi lenses and multi-shot night
modes are now also familiar. Many new smartphone camera features are being
enabled via computational photography image processing and multiple specialized
lenses rather than larger sensors and lenses, due to the constrained space
available inside phones that are being made as slim as possible.
Battery:-
A smartphone typically uses a lithium-ion battery. By the end of 2017, smartphone battery life
has become generally adequate; however,
earlier smartphone battery life was poor due to the weak batteries that could
not handle the significant power requirements of the smartphones' computer
systems and color screens.
Smartphone users purchase additional chargers for use
outside the home, at work, and in cars and by buying portable external
"battery packs". External battery packs include generic models which
are connected to the smartphone with a cable and custom-made models that
"piggyback" onto a smartphone's case. In 2016, Samsung had to recall
millions of the Galaxy Note 7 smartphones due to an explosive battery issue.
For consumer convenience, wireless charging stations have been introduced in
some hotels, bars, and other public spaces.
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