Chapter 8: Mobile Devices



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Chapter 8: Mobile Devices

After completion of this chapter, students should be able to:



  • Explain mobile device hardware

  • Identify components of mobile devices

  • Describe the features and characteristics of mobile operating systems

  • Compare and contrast Android and iOS operating systems

  • Establish Basic Network Connectivity and Configure Email on mobile devices

  • Describe mobile device synchronization

  • Compare and contrast methods for securing mobile devices

  • Explain antivirus applications on mobile devices

  • Apply the six steps of troubleshooting process to mobile devices



8.0.1 Introduction

  1. What is a mobile device?

A mobile device is any device that is hand-held, light, and typically uses a touchscreen for input



8.1 Mobile Device Hardware Overview

  1. Which components are field-replaceable in most mobile devices?

Battery, Memory card, Subscriber Identity Module (SIM) card.



  1. What two mobile devices are replaceable/ upgradable on some mobile devices?

Batteries, Screens.



  1. What can be done with obsolete mobile devices?


  1. How does a capacitive touch screen work?

Consists of a glass screen coated with a conductor. Because the human body is also a conductor, touching the screen interrupts the electrical field of the screen. This change is measured by the touch processor to determine the vertical and horizontal location of the touch on the screen.


  1. Describe the operation of a resistive touch screen

Resistive - Consists of transparent layers of material capable of conducting electricity. These layers have a small air gap between them. One layer conducts electricity from top to bottom, while the other conducts electricity from left to right. When pressure is exerted on the screen, the two layers touch. When the layers touch, the vertical and horizontal locations are calculated by the touch processor from where the electricity is interrupted.





  1. Which term describes the ability of a mobile device to recognize when two or more points of contact are made on the screen?

*Double touch


  1. What is a proximity sensor and how is it used?

proximity sensor that turns off the touchscreen when the phone is up to your ear and turns it on when you pull the device away from your ear. This prevents icons or numbers from being activated by contact with your face or ear, and also saves power.


  1. Describe the advantages of using flash memory storage in mobile devices:

Power efficiency - Flash memory requires very little power to store and retrieve data. This reduces the frequency with which mobile devices need to be recharged.


Reliability - Flash memory can withstand high levels of shock and vibration without failing. Flash memory is also highly resistant to heat and cold.
Lightweight - The weight of mobile devices is not significantly affected by the amount of memory installed.
Compact - Because flash memory is compact, mobile devices can remain small regardless of the amount of memory installed.
Performance - Flash memory does not have any moving parts, so there is no spin-up time for platters like a conventional hard drive. There is also no drive head to move, reducing the seek time to locate data.
Noise - Flash memory makes no noise.
8.2 Mobile Operating Systems


  1. Explain the difference between “open source” and closed source” IOS software, giving an example of each:

Open source software allows anyone to contribute to the development and evolution of the software. Android has been customized for use on a wide range of electronic devices.



  1. What are “apps”

Apps are the programs that are executed on mobile devices. Mobile devices come with a number of different apps preinstalled to provide basic functionality.


  1. What are two good sources for safely downloading Android apps?

Google Play, Amazon App Store


  1. Explain what is meant by push and pull?

When a user runs the Google Play app or the Apple App Store app from a mobile device, apps and content that are downloaded are pulled from a server to the device.With Android devices, a user can browse Google Play using any desktop or laptop computer and purchase content. The content is pushed to the Android device from the server.


  1. Which company does not allow “pulling,” directly to your mobile device and why?



  1. What is “side loading”?

There is another way to install apps on mobile devices. Apps can be downloaded from different sources on the Internet and transferred to a mobile device through Wi-Fi, Bluetooth, data cable, or other methods. This is called sideloading. After the app is transferred to the mobile device, it can be installed by touching it using a file explorer app. However, sideloading apps is not recommended, because many sources for apps cannot be trusted. Only install apps from trusted sources and developers.



  1. What icons are on the Android system bar? (sketch and label)

Back, Home, Recant apps, Menu




  1. What are Android widgets?

Clock, Weather, wifi on and off, notes, facebok, last call.

8.2.2.3 Lab - Working with Android


  1. What are three main differences between iOS and Android interfaces?

No navigation icons - A physical button is pressed instead of touching navigation icons.

No widgets - Only apps and other content can be installed on iOS devices.

No app shortcuts - Each app on a home screen is the actual app, not a shortcut.



  1. What functions can be performed with the home button on an iOS mobile device?

Wake the device, Return to the home screen, Start Siri or voice control

  1. How would you access the notification area? Settings > Notifications



  1. How do you move the location of an apple IOS app?

Touch and hold the app until it jiggles.


  1. What is an alert badge?

An alert badge is displayed as a small icon over an app. This icon is a number that indicates the amount of alerts from the app that need attending.


8.2.3.3 Lab - Working with iOS



  1. What internal device determines screen orientation?

accelerometer



  1. What is the difference between landscape or portrait? (sketch it)

On is up and down and one is sideways.





  1. What setting can be changed to conserve battery power and why?

Power saving mode can be turned on. And the brightness can be turned down.



  1. How do non-GPS devices determine their location?

A Satellite.
8.2.4.3 Lab - Mobile Device Features - Android and iOS

8.2.4.4 Worksheet – Mobile Device Information


    1. Network Connectivity and Email

  1. What four precautions should you use when communicating over Wi-Fi?

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

Use a VPN connection when possible.

Enable security on home networks.

Use WPA2 security.
8.3.1.2 Lab - Mobile Wi-Fi - Android and iOS


  1. Describe the “evolution” of industry standards for cellular networks, form their origin to modern standards.



  1. What mobile standards are the most common today?



  1. What is Airplane Mode and why would it be useful?

that turns off all cellular, Wi-Fi, and Bluetooth radios.. it can also save battery why you are in a area with out service.


  1. What are uses for Bluetooth connectivity?

Stereo control, handsfree headset, keyboard or mouse





  1. What are the two levels of Bluetooth network standards?

Physical and Protocol.




  1. Explain the concept of Bluetooth paring:

Bluetooth pairing is when two Bluetooth devices establish a connection to share resources



  1. What are some default Bluetooth pairing pin numbers? (search this online)

0000, 8888,1234, 9999



  1. What is the recommended Windows 7 email program from Microsoft?

Hotmail


  1. What are the five protocols used in email?

Email address - This is the address people need to send email to you. An email address is a username followed by the @ symbol and the domain of the email server (user@example.net).

Protocol used by the incoming mail server - Different protocols provide different email services.

Incoming and outgoing mail server names - These names are provided by the network administrator or ISP.

Username - This is used to log in to the mail servers.

Account password - The password should be strong, because mail accounts are often available from websites.

8.3.3.2 Activity - Matching Email Protocols Instructor Check ____________

  1. What type of account is used by Android devices for initial sign-in and configuration?


Gmail.


  1. What type of account is used by Apple devices for initial sign-in and configuration?

Apple Id



  1. What is the benefit of data synchronization across multiple deceives?

Contacts, email, music, apps, video.




  1. How does synchronization for Apple compare to that of Android devices?

They are two different things and they are completely different from each other.



8.4 Methods for Securing Mobile Devices

  1. Which mobile device security feature requires the user to slide a finger over the screen in a specific sequence to unlock the device?

Pattern



  1. What are two purposes of the passcode lock feature on mobile devices?

To lock out any one from privacy. Or if it gets stolen.

8.4.1.2 Lab - Passcode Locks - Android and iOS


  1. Which two conditions must be met for mobile device security measures such as remote lock and remote wipe to function?



  1. Which two items common to both Android and iOS devices can be remotely backed up? 


  1. What is meant by rooting or jail braking and why would you want to do it?

Means you are unlocking the phone so you can do what ever you really want with out rules.

  1. What is meant by “bricking” your device? (you may need to look this up)

Bricking your device means that your phone is a brick it will not work at all because you have locked it up to a point in where you locked it completely.

  1. Which operating systems updates are easier Apple or Android and how?

Android because they do it their self with out you having to worry about when a new one is going to come out.
8.5 Basic Troubleshooting Process for Mobile Devices

  1. In order name the six troubleshooting processes?

A Open or closed questions


B Establish a theory of probable cause
C test the theory to determine the cause
D Establish a plan of action to solve the issue
E verify full system functionality
F Document the steps you took to solve the problem



  1. A user accidentally drops a mobile device into a pool. What corrective action should be taken?

Take it and put it in rice right away and let it sit for 24 to 48 hrs.



  1. After being left in a car for many hours on a hot day, an iPhone cannot be turned on. What should the user do to fix this problem?

Put it in the fridge for a while it might just need to cool down.


  1. After an upgrade to a mobile device, some applications are no longer working, but some work fine. The user can make calls and send and receive email. Which two kinds of problems could be related to these issues?

The phone just might need a hard reset.




  1. How can you reset an iOS device?

Have to go into the Icloud.



  1. Which scenario or situation would prevent a user from upgrading the OS on an Android device?

The way the devices are user friendly if you like a user friendly device you would be better with a Android.

Chapter 8: Mobile Devices Page of



IT Essentials 5.0



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