All language subtitles for Connecting Mobile Devices - CompTIA A+ 220-1101 - 1

The amount of technology in a single phone
or tablet is remarkable,

and in this video we'll talk about
connectivity for those particular devices.

There's both wired

and wireless options for connectivity
on our phones, on our tablets,

and we have seen many changes
to the standards

and the way that we connect
to those devices through the years.

We use this connectivity to perform
a number of different functions,

not only connectivity to the internet.

Being able to obtain our email
and browse the net,

but we also use it for backup
and identification and in some cases

to synchronize our systems
with all of the other devices that we use.

For the majority of our phones
and our tablets, we use USB or Universal

Serial Bus as the primary wired connection
type.

USB B is designed for high speed
communication, and it's often

used to connect our mobile device
with our computer or with a power source.

You're probably already familiar

with the larger type
A plug that we often see on computers.

The device itself may have
a different type of USB connection.

If you have an older device, it may be
connecting over USB with this mini B plug.

Many of today's mobile devices
using this type of connectivity

will use the smaller micro
B plug, and indeed,

that's a very common
standard across many mobile devices.

This is not the only way to connect
and charge our mobile devices,

but this tends to be some of the more
common connections that you'll find.

Newer
phones and tablets use a USB connection,

but it's a different type of connector,
specifically a USB C connector.

usb-C is used on both devices
and the computer,

so you may find that your device has fewer
type eight plugs these days

and more of the smaller usb-C plugs.

The usb-C standard defines
what this plug looks like,

but you could put lots of different types
of signals over that single interface.

For example, the usb-C plug may be sending
DisplayPort signals.

It may provide HDMI, video and audio,

or you may be sending Thunderbolt data
over a usb-C physical connection.

If you have an Apple device, you might not
be using any of those USB connections.

You may instead
be using a lightning connection.

This is an eight pin
proprietary connection from Apple,

and it's commonly seen on
iPhones and iPads.

There are a number of advantages
that lightning has over the micro USB

one is that this lightning connection
supports a higher power output,

which allows us to charge our phones
and our tablets that much faster.

This is also a type of connector
that can be inserted either way,

which was a problem
prior to the advent of usb-C.

What this means for you as a technician
is that you'll

probably have a lot of different cables
in your tool bag.

You might be walking around with cables
that are designed for a USB

mini, USB, micro USB, or lightning
connectors.

Just so you're able to plug in
and connect to whatever you might find.

Before the advent of Universal Serial Bus.

We still use serial communication,
but it was using different interfaces.

Commonly it would use a DB9 interface.

This is a nine pin connection.

Sometimes you'll see
this referred to as a D9 connection.

These serial cables
commonly transported Rs232 signals,

and this is a standard of communication
that's been around for a very long time.

You can probably still find devices
in your infrastructure

that use DB9 connections with Rs232
to be able to connect

and view consoles on switches, routers,
and other devices.

Before USB was invented,
this was the serial connection

that we used
for almost everything on our computers.

So if you needed to plug in a modem
or a mouse,

then you were probably using DB9
over the serial connection.

These days we see a lot more USB

and a lot less DB9 in our environments.

But if you still have an older switch
or router around,

then you'll probably need a serial cable
with a DB9

connector at the end so that you're able
to configure that device.

If you look at your laptop today, you
probably won't even find a DB9 connector.

Instead, you'll have to get a conversion
cable that will use one of your USB

interfaces,
convert it to a DB9 physical connection

so you can send those serial signals
over to a switch, router,

or anything else that might need
this type of serial connection.

A very popular mobile connection
type is NFC.

NFC is near field communication,
and it's a way to send small amounts

of data between devices that are located
very close to each other.

If you've ever gone into a store
and used a payment system

or you needed to transfer information
between two mobile devices, then you're

probably using NFC
to facilitate that conversation.

You can also use NFC as an access device,
or something like an identification card,

that you could hold up to a sensor
and use it to unlock an electronic door.

You can't have a conversation
about mobile device connectivity

without including Bluetooth.

It is probably one of the most popular
wireless communication methods

we use with our mobile devices.

If you're using wireless earbuds
or a wireless headset,

or you're connecting

to the audio system of your automobile,
then you're probably using Bluetooth.

You may be used to using a Wi-Fi hotspot
at your local coffee shop,

but you can also use many mobile phones
as a wireless hotspot.

You can enable that wireless hotspot
functionality on your mobile phone,

and now anyone around
you can connect to your mobile phone

over 802.11 and your mobile phone
will use your wireless

provider's network
to be able to gain access to the internet.

Not all phones support this Wi-Fi hotspot
connectivity, and your phone provider

may require you to pay extra each month
just to enable that capability

on your phone.

Either way, it's another option
that you can use to be able to gain access

to the internet from devices
that may only have 802.11 access.

Either way, it's a method
you can use to enable your 802.11 devices

to be able to gain internet access
where there may not be a public

access point available.