PC Support & RepairChapter 8Mobile Devices

Objectives•After completing this chapter, you will meet these

objectives:▫Explain the basic features of mobile operating systems.▫Establish basic network connectivity and configure

email.▫Compare and contrast methods for securing mobile

devices.▫Compare and contrast hardware differences in regards

to tablets and laptops.▫Execute and configure mobile device synchronization.

Mobile Device Hardware Overview

Mobile Device Hardware•No field-serviceable parts/FRUs•Can’t upgrade or replace internal components▫Screens can be replaced▫Not required of A+ tech

Field Replaceable Parts•You can fix touchscreens, glass, replace batteries▫Get parts from manufacturer▫Parts from other sources void warranty

•Field-replaceable parts:▫Battery▫Memory card▫SIM card

Touchscreens•Capacitive*▫Glass screen with conductor coating▫Sense conductive skin

•Resistive▫Two sheets of glass with spacer in between▫Touch= top glass contacts lower glass

Multi-touch•Slide/Swipe•Double touch▫Touch screen twice quickly to zoom in▫Touch the screen twice quickly again to zoom out

• Long touch▫Touch & hold until options available (copy/cut/paste)

•Scroll•Pinch to Zoom Out/Spread to Zoom In

Storage Drive•SSD▫Flash memory chips on board

Low power, reliable, lightweight, small, no moving parts, no noise

Project•Handout: Identify the Multi-touch

Review- 3Q•Which type of touch display is now most common &

has a conductive coating?▫Capacitive

•Which touch display has 2 layers of glass that uses pressure?▫Resistive

•Unlike laptops, mobile devices don’t have these for repairing.▫Field serviceable parts or FRUs

Mobile Operating Systems

Android vs. iOS•Android is open-source▫Free to change code &

distribute▫Android on other devices

now

• iOS is closed-source▫Code not available▫If Apple gave you rights,

you’d pay Apple a royalty fee

Apps•Android▫Google Play, Amazon App Store, others▫Install apps from trusted sources▫Google Play only allows apps to install that are

compatible• iOS▫Apple App Store only place to get▫Apple makes sure apps are safe, perform well, and

don’t infringe on copyright

Installing Content• Pull▫ When using app stores, you “pull” from their

server• Push▫ Browse Google Play from computer/get from

iTunes▫ Content will be “pushed” to the mobile device

• Sideloading▫ Get app from other source▫ Transfer to device by Wi-Fi, Bluetooth, cable▫ After transfer, install▫ Generally NOT SAFE

Review- 4Q•When you get an app from the app store, how is that

app getting on your device?▫Pushed

•Which mobile OS is open source?▫Android

•Which app store is fully controlled & all apps are carefully scrutinized there?▫Apple

•What kind of storage drive do mobile devices have?▫SSD

Android Touch Interface

Home Screen Items•Main screen & slide for other

screens• Icons & widgets•Possible buttons at bottom of

device/screen•Google Search App

Notification & System Icons•Top of screen

•Clock, battery, Wi-Fi, Cell Data Connection, Notifications, Vibrate

•Swipe down from top

•Quick way to get to settings

Apps• Icons are shortcuts to apps•On Home screen or “All

Apps” icon• Add to Home screen:▫Tap, hold, & drag

•Move/Remove app from Home Screen:▫Click, hold, drag to move▫Click, hold, drag to remove

icon

Customize Home Screen

HTC One M8

Uninstall an App

HTC One M8

Multi-tasking with Apps•Tap Recent Apps button▫Tap to go to that app▫Swipe to close

Only stops current activity of app, not stop

Practice Project•Notifications swipe down•Switch home screens•Recent apps•Move an app•Remove an app from home screen•Create a folder to group apps in•Move a widget to home screen•Click All Apps button•Uninstall an app (from All Apps)

Review- 4Q•What’s the difference between an app & widget?▫Widget is a program that displays information

•How can you view all of your notifications quickly on Android OS?▫Swipe down from top

•How can you dismiss a notification?▫Swipe to the side

•How can you view recent, running apps?▫Click the Recent Apps button

iOS Touch Interface

Home Screen•No navigation icons- Just one button•No widgets•No app shortcuts- actual app

•Home button▫Wake, Return to last/main Home screen, Double-press

for recent apps, Hold for Siri

Notification Center•Swipe down from top,

even when locked▫Click X to clear

Apps•All apps are on home screen▫No “All Apps” button

•Move apps by holding & dragging▫Press Home button to save

•Remove an app▫Hold app until it shakes▫Touch X on the app▫Press Home button to save

changes

Create Folders•Drag an icon on top of

another•Name of folder

determined by apps in it▫You can change it

•Press Home to save

Move Icons & Create

Folder iPhone 6

Multi-tasking with Apps•Switch between apps

w/out going to Home screen

•Recent apps are paused in background

•Press Home button 2x▫Tap to open one▫Swipe up to close one

Practice Project•Unlock•Show notification center•Open app & then go to Home screen•Open recent apps•Move an app•Delete an app•Make a folder with apps

Review- 4Q•You’re in an app. You opened it from the 2nd home

screen. How do you get to the main home screen?▫Hit Home button twice slowly

•How do you create a folder containing several apps?▫Drag an app on top of another

•How do you remove an app?▫Hold until it shakes, click the X, hit home button

•What happens if you hit the Home button 2x?▫Recent apps list

Common Features

Adjust Screen Orientation•Accelerometer▫Adjusts the screen orientation▫Other apps use it to determine motion

•Android:▫Settings >> Display >> Auto-rotate screen

• iPhone/iPad:▫Swipe bottom up >> Tap lock icon

Adjust Screen Brightness•Makes easier to read in

sunlight• Saves battery• Auto-adjust (if have light

sensor)

• Android:▫Swipe down, Settings

• iPhone/iPad:▫Swipe bottom up OR

settings

Change Brightness iPhone 6

Change Brightness HTC One

M8

GPS• Navigation▫ Turn-by-turn directions

• Geocaching▫ Shows the location of geocaches ; hidden containers around the world.

Users find them and often sign a log book to show that they found it• Geotagging▫ Embeds location information into a digital object, like a photograph or a

video, to record where it was taken• Specialized search results▫ Can display what’s around you such as restaurants close by

• Device tracking▫ Locates device on map if it’s lost or stolen

Turn GPS On/Off

iPhone 6

Turn GPS On/Off

HTC One M8

Practice Project•On Android & iOS:▫Turn off/on screen rotation▫Adjust screen brightness▫Auto-set brightness▫Turn GPS off/on & set mode

Review- 3Q•What is built into mobile devices that helps adjust

the screen rotation?▫Accelerometer

•What’s one way you can help save battery power?▫Lower brightness; shut GPS off

•What’s the easiest way to get to the brightness settings on an iPhone?▫Swipe up from bottom

Network Connectivity

Wi-Fi• Connect to wireless

network or Add▫ SSID & password

• Never send login or password information using clear, unencrypted text

• Use a VPN connection when possible

• Enable security on home networks

• Use WPA2 security

Connect to Wi-Fi

S5

Connect to Wi-Fi

iPhone 6

Cellular Data•Current: 3G & 4G LTE

•Android:▫Settings >> More >>

Wireless Networks >> Mobile Networks

• iOS:▫Settings >> General >>

Cellular Data

Turn 4G On/Off HTC M8

Turn Data On/Off

iPhone 6

Airplane Mode• Turns off all cellular, Wi-Fi, and

Bluetooth radios

• Android:▫Settings >> More >> Airplane

Mode▫Hold Power Button >> Airplane

Mode

• iOS:▫Settings > Airplane Mode >>

On/Off▫Swipe Up

Bluetooth•Headset, Speaker, Keyboard/Mouse, Tethering•Up to 8 devices at once

•Pairing:▫Turn on device▫Turn on Bluetooth on phone/Tablet▫Discover▫Pair (Pin- 0000)

Pair Bluetooth HTC M8

Pair BluetoothiPhone 6

Review- 4Q•What mode shuts off all radios in your mobile

device?▫Airplane Mode

•On an iPhone, how can you quickly set Airplane mode?▫Swipe up from bottom

•On an Android, how can you set Airplane mode?▫Hold power button in

•Why would you shut off data?▫So you don’t use too much; traveling outside US

Configuring Email

Configuring Email•Browser, Email Client, or App

• Info you’ll need:▫Email address & password▫Incoming & outgoing email server names▫Protocol for incoming server

POP or IMAP▫Security used for encryption

SSL (IMAP SSL 993; POP SSL 995)

Android Email Setup•On setup, you connect

with Gmail account•Then setup other email

accounts

•Download App for that email OR

•Settings >> Add Account▫Uses all purpose email

app

Setup Email

Galaxy S5

Exchange Email

Galaxy S5

iOS Email Setup•Apple ID used for iCloud

email setup▫And iTunes & App store

•Other accounts:▫Settings >> Mail,

Contacts, Calendars >> Add Account

Setup Personal

EmailiPhone 6

Setup Exchange

EmailiPhone 6

Device Synchronization

Data Sync•Exchange of data between devices for consistency▫Contacts▫Email▫Calendar entries▫Pictures▫Music▫Apps▫Video▫Browser links and settings

Sync with iOS•Apple sync with iTunes or iCloud

Sync with iTunes

iCloud Backup

Sync with Android•No specific application ▫Use third party app▫Phone may come with a

sync app•Gmail can back up all

google info (mail, contacts, calendars, etc.)

Review- 3Q•When setting up an Android phone, what kind of

email account is created 1st?▫Gmail

•What kind of email is created on an iPhone 1st?▫ iCloud

•Which kind of mobile device is best able to sync with a built in app?▫Apple

Securing Mobile Devices

Passcode Lock- Android• Lock when press power key or

after a time period•Types of Locks:

Lock Pattern

S5

Fingerprint Recognition

S5

Passcode Lock- iOS•Settings >> General

•Passcode ID▫4-digit Passcode

•Touch ID▫Fingerprint reader

Set up Touch ID

Failed Login Attempts• iOS▫Disabled after 5

attempts▫After 6th, 1 min disable▫Additional time after

•Android▫Varies 4-12 times▫Unlock by entering

Gmail acct info

Remote Backups• iCloud▫5GB of storage free

•Android▫Backed up with Gmail account▫Calendar, email, contacts

Find My iPhone- iOS•Missing or stolen?▫Login to iCloud & locate▫Send a message or play a sound▫Remote wipe▫Can’t find? Device is off or disconnected

Software Security•Vulnerable to malicious software•Android: may not be able to set scheduled scans• iOS: never schedules scans

•Apps run in a sandbox▫Keeps code isolated from other code

•Download from trusted sources•Better chance of transferring malware to

desktop/laptop

Rooting & Jailbreaking•Unlocks bootloader•Allows custom OS install▫UI▫Tweaks▫Overclock▫Tether▫Remove bloatware apps

•Voids warranty• Increases risk of infection

Patch & Update•Updates add

functionality•Patches fix problems•Get automatically•Android:▫Settings >> About

phone• iOS:▫Settings >> General >>

Software Update

Check for UpdatesiPhone 6

Check for Updates

Galaxy S5

Review- 3Q• If you’re going into the bootloader & customizing the

OS on an iPhone, what are you doing?▫Jailbreaking

•An iPhone has 2 kinds of locks. What are they?▫4-digit Passcode or Fingerprint ID

•Where do apps run that’s separated from other OS code? It makes it less vulnerable to malware.▫Sandbox

Basic Troubleshooting for Mobile Devices

Troubleshooting• Check for warranty 1st ▫May be able to exchange ▫Upgrade or pay for repair

• Force a reboot▫Soft reset (remove

battery)•Uninstall app• Check for an update• Factory reset (lose data-

last resort)

Safe Mode

Galaxy S5

Soft Reset Galaxy S5

Factory Reset

Galaxy S5

Common Problems

Common Solutions

Project• Identify possible solutions for each problem

Summary• Mobile device hardware has few field-repairable units.• Mobile devices are often replaced instead of repaired due to the high cost of

repairs.• Mobile devices often contain proprietary parts that cannot be interchanged.• Touchscreens are used instead of other input devices, such as mice and

keyboards.• SSDs are used in mobile devices because of their size, energy efficiency, and

lack of noise.• Open source software can be modified by anyone with little or no cost.• Use only trusted content sources to avoid malware and unreliable content.• Both Android and iOS have similar GUIs for using apps and other content.• Mobile devices use sensors, such as GPS and accelerometers, to enhance

their functionality.

Summary• Network connections for mobile devices are made with cellular, Wi-Fi, and

Bluetooth connections.• Email accounts are closely tied to mobile devices and provide many

different data synchronization services.• Android devices use apps to synchronize data not automatically

synchronized by Google.• iOS devices use iTunes to synchronize data and other content.• Passcode locks secure mobile devices.• Remote backups can be performed to backup mobile device data to the

Cloud.• Remote lock or remote wipe are features to secure a mobile device that

has been lost or stolen.• Antivirus software is often used on mobile devices to prevent the transfer

of malicious programs to other devices or computers.

PC Support & RepairChapter 8Mobile Devices