Operating Systems - chapter 16
Unable to decrypt email (android)
May need to generate a new public key and private key and distribute new pubic key to those who send you encrypted email
Weak cellular signal (ios)
Use Wi-Fi to connect to the Internet
System lockout (android)
Wait until timer counts down and try again If passcode or screen swipe doesn't work, enter your Google account and password associated with device Google offers many solutions Go to accounts.google.com and search for methods
Developers for iOS (closed source) only have access to APIs, which are calls to the OS
Apps must be tested and approved before being sold in the App store Better assurance of high quality apps Centralized app purchasing
Use AirDrop
AirDrop is a feature (beginning with iOS 7) that can be used to easily transfer files between devices Uses Bluetooth to detect nearby compatible devices Creates a peer-to-peer network
Android OS
Android's launcher (GUID) supports windows, panes, 3d graphics Connects to Wi-Fi, Bluetooth, cellular networks Users can configure up to five custom software buttons Called Home touch buttons Up to seven apps can be pinned to Favorites tray Notifications provide alerts and related information about apps and social media
Use iCloud Drive to Sync Content
Apple ID gives you a free iCloud account at icloud.com Can sync files stored on iCloud Drive with any Apple mobile device or personal computer When you turn on iCloud Drive on an Apple device Content stored on your iCloud drive is automatically synced with your device
iOS Apps
Are only available through the its App Store Can use the iTunes Store app to search, purchase, and download content iPads and iPods must be activated by signing into the device with an Apple ID or user account A process called jailbreaking allows users to download software from sources other than Apple Void any manufacturer warranty on the device
The Action Center provides direct links to Wi-Fi and Bluetooth connection apps(Windows phone)
As well as airplane mode app
Android offers a number of options for these tasks
Automatically sync using online accounts: Gmail, Facebook, Twitter, Dropbox, LinkedIn etc. have sync functions Use third-party syncing apps: for personal files such as pictures, music, and videos there are several sync apps OneDrive will sync entire folders in the background Dropbox only sync fires placed in the app's own folder Sync apps with your app source Google Play allows apps to be updated automatically or manually
Android OS by Google
Based on Linux Used on variety of smart phones and tablets Most popular OS for smart phones
Android OS by the Open Handset Alliance and Google
Based on Linux: Linux and Android are open source
iOS by Apple
Based on Mac OS X Used on iPhone, iPad, iPod Touch
Windows Phone (WP) by Microsoft
Based on Windows and used on various smart phones (not tablets) Less than 3% of smart phones sold today use WP(now is 0%)
Configure, Sync, and Troubleshoot Android Devices
Because Android is open source, different manufacturer's devices may require different steps to configure the device and OS You should use the user guide for each device you are supporting Most settings you will need are in the Settings app Some setting options might rely on third-party apps
Windows Phone tiles and menus are different from Android and iOS icon-based launchers
But settings, options, and troubleshooting tools closely resemble those of Windows 8
Access Action Center by swiping down from the top of the Start screen(Windows phone)
Buttons in the Action Center are links to respective apps, not toggle switches Example: tapping Wi-Fi opens the Wi-Fi app It does not toggle Wi-Fi on and off
Common Problems and Solutions: Touch screen not responsive (iOS)
Clean the screen with a soft, damp cloth Don't use the touch screen when your hands are wet Remove any plastic sheet or film protecting screen
Troubleshooting tools you should use in order: (ios)
Close running apps Uninstall and reinstall an app Restart the device Reset the device Update iOS Update from Recovery mode using iTunes Reset all settings Erase all data and settings Restore the device Restore the device from Recovery mode using iTunes
Restore From an iTunes Backup
Connect the device to iTunes Select the device to show the Summary page In the Backups section, click Restore Backup in the shortcut menu Also, when setting up a new device and you first connect it to iTunes on your computer It will ask if you want to restore from backup or set up the device as a new device
Some steps to try to resolve Android problems
Force a reboot by pressing and holding the power button or by battery removal Uninstall and reinstall a app Update Android Use Safe Mode Update firmware Use Recovery mode Factory reset or hard reset using the Settings app Should be last resort (erases all data and settings)
Remaining market share is shared by:
Java Micro Edition (ME) by Oracle Symbian OS BlackBerry OS Kindle Fire by Amazon
Use iTunes to Back Up and Sync Content
Make sure computer qualifies for iTunes Download and install iTunes software Connect your device to your computer via USB port To see options for backups, syncing, and transferring, in the iTunes window, click File and click Devices To backup device to computer, click Back Up iTunes automatically syncs most information on the device (see following slide) Use the Settings menu to choose what content to sync
Windows Phone Apps
Obtained through Microsoft Store Availability of apps are more limited than what can be found for Android or iOS Windows 10 Mobile will be more compatible with Android and iOS Number of apps should increase Apps can be obtained from third-party websites
Sync, Back Up, and Restore from Backup in iOS
On Apple devices, you can backup iOS settings, email, documents, and other data using iTunes or iCloud iTunes backs up to your computer iCloud backs up to storage on Apple web sites
Wireless connectivity problems (android)
On the Wi-Fi screen, tap menu icon, tap Advanced Wi-Fi, uncheck Wi-Fi signal weak so that the device will attempt to maintain a connection even with a weak signal
To add a Microsoft account: (Windows phone)
Open the Settings app, tap email+accounts, tap add an account, then Microsoft account, tap sign in, enter email address and password, tap next After authentication is complete, you'll be asked if you want to back up content, tap yes to back up photos, texts, phone settings, and app data
(Windows phone)Before troubleshooting, back up your phone's data and then attempt the following options:
Power down and power up Force a restart Press and hold the volume down button and the power button together for 10-15 seconds Remove the battery May need to go to Settings and tap Date+time to reset the time Update Windows Phone
Before installing an update (android)
Read the release instructions about the update, called the Product Release Instructions (PRI)
Android OS by the Open Handset Alliance and Google
Releases of Android based on dessert names Froyo Gingerbread Honeycomb Ice Cream Sandwich Jellybean KitKat Lollipop Future releases will following alphabetical order
Inaccurate touch screen response (android)
Remove protective cover Check accessibility settings in the Settings app
(Windows phone)Restoring a Windows phone from backup, or installing a backup on a new device
Requires that you use the same Microsoft account that was used to create the backup
(Windows phone)Troubleshooting options (cont'd):
Reset the phone Wipes all user data and settings off the phone Make sure you back up data and settings first Force reset Use if phone is completely unresponsive Check manufacturer documentation for specific steps Software Recovery Tool Some Windows phones can be reset and recovered using the Software Recovery Tool on your computer Check manufacturer documentation for information
Configure Android Email
Since Google owns Gmail, it's easy to configure a Gmail account on Android Once configured, you can sync books, calendars, contacts, Gmail, and Google Photos To set up a Gmail account, tap the Gmail app on the home screen and enter your Gmail account and password Other types of accounts can be automatically configured by Android
Rooting is similar to jailbreaking an iOS device
The process of obtaining root or administrative privileges to an Android device Gives you complete access to the file system, and all commands and features To root a device: Download and use third-party software For some manufacturers, rooting will void a warranty Some carriers will refuse technical support for a rooted device
Network connections are configured using the Settings screen, available settings include: (android)
Turn Airplane mode on or off Turn Wi-Fi on or off and configure Wi-Fi access points Turn Wi-Fi calling on or off Turn Bluetooth on or off Share and connect Set up tethering Set up a VPN
Overheating (android)
Turn the screen off for a while and close unneeded apps
Wi-Fi Connection (IOS)
Use Setting to turn on Wi-Fi On the Wi-Fi screen you can view available Wi-Fi hotspots, see which Wi-Fi network you are connected to, turn Wi-Fi off and on, and decide whether the device needs to ask before joining a network
Bluetooth Connection(IOS)
Use Settings to turn on Bluetooth Two Bluetooth device begin the pairing process A Bluetooth PIN code might be required
Dim display (android)
Use brightness slider to change brightness Make sure the Auto option is not selected so you have control over the screen's brightness level
Windows Phone by Microsoft
WP by Microsoft is a simplified version of the Windows OS designed for desktops, laptops, and tablets Windows Phone 8.1 corresponds to Windows 8.1 Windows Phone does not have a desktop screen Most Windows phones have three buttons below the screen Start button accesses the Start screen Windows phones rely primarily on the Start screen for accessing apps
VPN Connection (IOS)
A mobile device can be configured to communicate securely over a VPN To create a VPN connection, tap Settings, General, scroll down and tap VPN Tap Add VPN Configuration Follow directions to complete the connection
CDMA carriers are likely to require that a cellular device have a Removable User Identity Module (R-UIM) (IOS)
A small card similar to a SIM card Contains a database file called the PRL (Preferred Roaming List), which lists the preferred service providers or radio frequencies our carrier wants the device to use
All part of an app are published as a package of files wrapped into one file with an .apk extension
Android Application Package (APK) format
Google Play is the official source for apps
Called the Android marketplace
Location services not working in apps (ios)
Check the Location Services settings System lockout Wait until timer counts down on the screen and attempt to enter passcode again
No sound or distorted sound from speakers (ios)
Check volume setting and check to see if Bluetooth is on
Most of the settings required to support an iOS device are in the Settings app
Configure the iOS and apps Find it on the home screen Tap the Settings app and search through its menus and submenus until you find what you need
Bluetooth connectivity issues (ios)
Delete all unknown devices
Short battery life (android)
Disable wireless connections and close apps when you're not using them May need to look into a replaceable battery
Windows Phone automatically syncs contacts, calendars, and email with an online email account (Windows phone)
Documents can be automatically synced through OneDrive
Configure iOS Email
Email can be managed in a one of two ways Using a browser Using an email client Smart phones use a built-in mail app To configure the Mail app on iOS you need the following: Your email address and password Names of your incoming and outgoing email servers Type of protocol your incoming server uses (POP or IMAP) Security protocols used
App data, Wi-Fi passwords, and other settings can be backed up directly through the Android OS
Go to Settings app, tap Backup & reset Make sure that Back up my data is checked Backup data is stored on Google's servers and is connected with your Google account
Overheating (ios)
If device is too hot to touch safely, power off and replace the device Don't use device in direct sunlight for long periods of time
(Windows phone)Check for Windows Phone updates by opening the Settings app and tapping phone update
If no updates are pending, tap check for updates You can also set the phone to automatically download updates
Screen won't rotate (ios)
Look in Control Center to ensure the orientation isn't locked Orientation Lock icon is a padlock symbol with an arrow circling around it
Bluetooth not connecting (android)
Make sure Bluetooth is turned on and check settings
Wi-Fi connectivity issues (ios)
Make sure access point and router are working Disconnect and then reconnect to the network
Apps not loading (android)
May be due to insufficient space Uninstall unused apps and delete unnecessary files
Slow performance (android)
May have too many apps open, try closing some
Cellular Connection (IOS)
Must have a subscription with your carrier that includes a cellular data plan Information that might be used when a connection is first made: IMEI - a unique number that identifies each mobile phone or tablet device IMSI - a unique number that identifies a cellular subscription for a device or subscriber ICCID - identifies the SIM card if the card is used CDMA carriers are likely to require that a cellular device have a Removable User Identity Module (R-UIM)
Android apps (open source) can be obtained from many sources
No assurance of quality Market is not always convenient for developers Many variations of Android exist, creating incompatibilities
Dim display (ios)
Open Control Center and adjust brightness
How to handle common problems: (android) Dropped calls
Try updating firmware
Android updates are automatically pushed to the device by the manufacturer
You can also manually check for updates Go to the Settings app and tap About On the About screen, tap System updates or Software update (or similar item)
Android apps
are sold or freely distributed from any source or vendor
Advantages: To iCloud:
devices automatically back up to iCloud and Apple is responsible for protecting your backups
To use iCloud Backup to backup content:
iCloud Backup requires iOS 5 or higher Turn on iCloud Backup Tap Settings, then iCloud, tap Backup Select items to back up iCloud Backup normally backs up whenever your device is connected to Wi-Fi Can manually back up on the Backup screen by tapping Back Up Now
iOS by Apple
iOS is proprietary software from Apple based on Mac OS X Only used by Apple devices iPhone iPad iPod touch Apple is sole developer and can maintain strict standards on its products
Use iTunes to Back Up and Sync Content (cont'd)
iTunes automatically syncs: Contacts App data and app settings Documents Calendar Call history Photos and videos taken by the device Wi-Fi and email passwords (Microsoft Exchange info) Bookmarks Text and voice messages
Use Handoff
is another synchronization tool designed to connect devices that all use the same Apple ID Can start a task on one device and then pick up that task on another device
Mobile OSs are factory installed
true
Most apps are written using Java using the Android software developer kit (SDK)
true
To configure settings on an Android device
use the Settings app, which can be found in the Apps Drawer or on the Notifications shade
Advantages: to iTunes
you have more control over your backups and the cost for storage is less
