PC Support & Repair Chapter 8 Mobile Devices
Jan 19, 2016
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