Podcast
Questions and Answers
A mobile device user notices their battery life has significantly decreased over a couple of years. What is the most likely cause of this issue?
A mobile device user notices their battery life has significantly decreased over a couple of years. What is the most likely cause of this issue?
- The user is storing too much data on the device, causing the battery to drain faster.
- The device's operating system is outdated and needs to be upgraded.
- The device is infected with malware that is consuming battery power in the background.
- The battery has naturally lost some of its capacity due to repeated recharging cycles. (correct)
A user is traveling to a remote area with no cellular coverage. What is the most effective way to conserve battery life on their mobile device?
A user is traveling to a remote area with no cellular coverage. What is the most effective way to conserve battery life on their mobile device?
- Enable airplane mode to disable all wireless radios. (correct)
- Continuously search for available Wi-Fi networks.
- Lower the screen brightness to the minimum level.
- Disable location services and close all background apps.
A user wants to identify which apps on their Android device are consuming the most battery power. Where can they find this information?
A user wants to identify which apps on their Android device are consuming the most battery power. Where can they find this information?
- Settings > Display > Power Saving
- Settings > Battery > Battery Usage (correct)
- Settings > Security > Battery Optimization
- Settings > General > App Management
What specific function is disabled when airplane mode is activated on a mobile device?
What specific function is disabled when airplane mode is activated on a mobile device?
A mobile device user observes that their device's battery appears swollen. What is the most appropriate course of action?
A mobile device user observes that their device's battery appears swollen. What is the most appropriate course of action?
Why does a mobile phone consume more battery power when it has a weak cellular signal?
Why does a mobile phone consume more battery power when it has a weak cellular signal?
If a user is concerned about preserving battery health over the long term, what practice should they generally avoid?
If a user is concerned about preserving battery health over the long term, what practice should they generally avoid?
What is the primary design feature of a mobile device battery that allows it to handle a buildup of gas?
What is the primary design feature of a mobile device battery that allows it to handle a buildup of gas?
What is the initial action to take when encountering a swollen battery in a mobile device?
What is the initial action to take when encountering a swollen battery in a mobile device?
What is the recommended method for disposing of a faulty swollen battery?
What is the recommended method for disposing of a faulty swollen battery?
Why is it recommended to perform a backup of a mobile device if its screen is cracked but the device still functions?
Why is it recommended to perform a backup of a mobile device if its screen is cracked but the device still functions?
Why is it typically necessary to replace the entire display, rather than just the glass, when a mobile device screen is broken?
Why is it typically necessary to replace the entire display, rather than just the glass, when a mobile device screen is broken?
What is the best immediate action to take to protect yourself if the glass on your mobile device is broken?
What is the best immediate action to take to protect yourself if the glass on your mobile device is broken?
What should you do first when your mobile phone is not charging properly?
What should you do first when your mobile phone is not charging properly?
When troubleshooting slow charging on a mobile device, after checking the interface, what is the next logical step?
When troubleshooting slow charging on a mobile device, after checking the interface, what is the next logical step?
If your mobile device is charging slowly, and you suspect a voltage issue, what tool should you use to confirm this?
If your mobile device is charging slowly, and you suspect a voltage issue, what tool should you use to confirm this?
What is a primary factor that affects the signal strength of a mobile device on a cellular network?
What is a primary factor that affects the signal strength of a mobile device on a cellular network?
What action can be taken to improve Wi-Fi performance if interference is suspected from other access points?
What action can be taken to improve Wi-Fi performance if interference is suspected from other access points?
According to warranty terms for mobile devices, what type of damage is typically not covered?
According to warranty terms for mobile devices, what type of damage is typically not covered?
What are liquid contact indicators (LCIs) used for in mobile devices?
What are liquid contact indicators (LCIs) used for in mobile devices?
What is the first step to take if you accidentally spill water on your mobile device?
What is the first step to take if you accidentally spill water on your mobile device?
After powering down a wet mobile device, what components should you remove, if possible?
After powering down a wet mobile device, what components should you remove, if possible?
Besides rice, what is a more effective desiccant for drying out a wet mobile device?
Besides rice, what is a more effective desiccant for drying out a wet mobile device?
After a mobile device gets wet, what action should be avoided during the drying process?
After a mobile device gets wet, what action should be avoided during the drying process?
What is the primary reason mobile devices automatically shut down when they become too warm?
What is the primary reason mobile devices automatically shut down when they become too warm?
Which of the following is the MOST effective first step in troubleshooting a mobile device with a completely unresponsive (black) screen?
Which of the following is the MOST effective first step in troubleshooting a mobile device with a completely unresponsive (black) screen?
What is the MOST likely solution if a mobile device only charges when the charging cable is held at a specific angle?
What is the MOST likely solution if a mobile device only charges when the charging cable is held at a specific angle?
Which of these observations is LEAST likely to indicate a malware infection on a mobile device?
Which of these observations is LEAST likely to indicate a malware infection on a mobile device?
How does using the CPU or display of a mobile device affect its temperature?
How does using the CPU or display of a mobile device affect its temperature?
What is the immediate next step after a 'Slide to power off' message appears on an Apple device?
What is the immediate next step after a 'Slide to power off' message appears on an Apple device?
For an Android device with a non-removable battery that is unresponsive, what is a common method to perform a hard reset?
For an Android device with a non-removable battery that is unresponsive, what is a common method to perform a hard reset?
Why might replacing a damaged interface on a mobile device require replacing the entire system board?
Why might replacing a damaged interface on a mobile device require replacing the entire system board?
Apart from running virus scanners, what is a proactive measure one can take to identify potential malware symptoms on a mobile device?
Apart from running virus scanners, what is a proactive measure one can take to identify potential malware symptoms on a mobile device?
When is it acceptable to apply heat to a wet mobile device to speed up the drying process?
When is it acceptable to apply heat to a wet mobile device to speed up the drying process?
If a mobile device frequently overheats, and app usage utilities reveal a particular app using a disproportionate amount of CPU, what is the MOST appropriate course of action?
If a mobile device frequently overheats, and app usage utilities reveal a particular app using a disproportionate amount of CPU, what is the MOST appropriate course of action?
Which of the following is a characteristic function of internal mobile device sensors?
Which of the following is a characteristic function of internal mobile device sensors?
If a mobile phone's screen is black and unresponsive, and a soft reset fails to produce a response, what combination of buttons is commonly used on Apple devices to perform a hard reset?
If a mobile phone's screen is black and unresponsive, and a soft reset fails to produce a response, what combination of buttons is commonly used on Apple devices to perform a hard reset?
You suspect that a user's mobile device is infected with malware. Which of the following network activities would provide the STRONGEST evidence to support that suspicion?
You suspect that a user's mobile device is infected with malware. Which of the following network activities would provide the STRONGEST evidence to support that suspicion?
Flashcards
Battery Degradation
Battery Degradation
Battery capacity decreases with each recharge cycle over time.
Poor Reception Battery Drain
Poor Reception Battery Drain
When a device constantly searches for a signal outside network range, it drains the battery.
Airplane Mode
Airplane Mode
Disables all wireless radios on a device, saving battery life when no connectivity is needed.
Radios Disabled by Airplane Mode
Radios Disabled by Airplane Mode
Cellular, Wi-Fi (802.11), Bluetooth, and GPS radios are typically disabled by airplane mode.
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Check Battery Usage
Check Battery Usage
Settings and Battery sections in iOS, iPadOS, and Android provide battery usage details.
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Mobile Battery Shape
Mobile Battery Shape
Mobile device batteries are flat to fit inside the devices.
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Swollen Battery
Swollen Battery
A swollen battery indicates a buildup of gas due to battery failure.
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Handling Swollen Batteries
Handling Swollen Batteries
Do NOT open or puncture a swollen battery due to the contained gases.
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Water damaged device recovery
Water damaged device recovery
Allow the device to completely dry out in a dry area before attempting to power it on.
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Mobile device heat protection
Mobile device heat protection
Sensors inside the device will automatically shut it down to prevent damage.
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App CPU usage check
App CPU usage check
Use app usage utilities to identify apps that are using a lot of CPU.
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Mobile device response to direct sunlight
Mobile device response to direct sunlight
Shutting down to prevent damage.
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Soft reset (Apple)
Soft reset (Apple)
Hold down the Power button until the 'Slide to power off' message appears.
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Hard reset (Apple)
Hard reset (Apple)
Hold down the Power button and the Home or Volume button for 10 seconds.
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Hard reset (Android)
Hard reset (Android)
Remove the battery and reinsert it, or hold down the Power and Volume buttons.
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Damaged interface repair
Damaged interface repair
Damage to the interface may require replacement of the entire system board.
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Malware symptoms on mobile devices
Malware symptoms on mobile devices
Unusual apps, high data usage, pop-ups, overheating, battery drain, CPU usage.
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Malware detection on mobile devices
Malware detection on mobile devices
Use a third-party application or virus scanner.
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Cursor Drift
Cursor Drift
The cursor moves erratically or jumps unpredictably on the screen.
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Swollen Battery Safety
Swollen Battery Safety
Gases are contained to prevent fire risk and additional device damage.
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Swollen Battery Handling
Swollen Battery Handling
Stop use, replace with a known good battery, and dispose of the old one at a hazardous waste facility.
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Mobile Screen Material
Mobile Screen Material
Mobile device screens are commonly made of glass, which can break.
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Action After Screen Breakage
Action After Screen Breakage
Back up data immediately if the screen is broken but the device is still functional.
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Broken Screen Repair
Broken Screen Repair
The entire display needs replacing, as the glass is connected. Also do not touch, it can cut.
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Broken Glass Safety Measure
Broken Glass Safety Measure
Use clear tape over broken glass to prevent cuts.
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Charging Port Issue
Charging Port Issue
Dirt and lint can accumulate in charging ports and prevent proper charging.
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Damaged Charging Cable
Damaged Charging Cable
Check for damage or fraying and test on another device to confirm it works.
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Voltage Check
Voltage Check
Use a multimeter to check voltage from the wall outlet and connector.
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Cellular Signal Variance
Cellular Signal Variance
Signal strength varies based on location due to building materials.
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Wi-Fi Interference
Wi-Fi Interference
Interference from other devices and access points can affect Wi-Fi performance.
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Improving Wi-Fi signal
Improving Wi-Fi signal
Change the channel or frequencies on your access point.
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Water damage exclusions
Water damage exclusions
Water damage is not covered under warranty.
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Liquid Contact Indicators
Liquid Contact Indicators
Sensors inside devices turn color when exposed to liquid.
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First Action for Water Contact
First Action for Water Contact
Power down immediately, remove components, and do not plug in.
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- Mobile devices rely on batteries, which degrade over time with each recharge.
- Battery capacity diminishes after years of recharging, necessitating battery replacement.
Minimizing Battery Use
- Be aware of device reception, as phones constantly try to reconnect outside of network range, draining the battery.
- Enabling airplane mode disables radios, preventing constant signal checks and saving battery life.
- Airplane mode disables cellular, 802.11 networking, Bluetooth, and GPS radios.
- iOS, iPadOS, and Android provide built-in battery features under Settings and Battery to check application battery usage.
Battery Issues
- Mobile phone batteries are flat to fit inside devices.
- Swollen batteries indicate a buildup of gas due to battery failure.
- Do not puncture a swollen battery due to potential fire risk.
- Replace swollen batteries and dispose of faulty batteries at hazardous waste facilities.
- Swollen batteries can damage devices, potentially requiring device replacement.
Broken Screens
- Mobile device screens are commonly made of glass, which can break.
- Back up devices with broken screens due to potential further damage.
- Broken glass necessitates replacing the entire display, not just the glass.
- Handle broken glass carefully due to sharpness; use clear tape for protection.
Charging Problems
- Charging issues can stem from a dirty charging interface, damaged cable, or insufficient voltage.
- Clean the charging interface carefully to avoid damaging pins.
- Check for cable damage and test with another device.
- Use a multimeter to check voltage from the wall outlet and connector.
Signal Strength Factors
- Signal strength varies based on location, especially inside buildings.
- Cellular connections have larger signal areas than Wi-Fi networks.
- Wi-Fi range is limited, and interference from other devices can affect performance.
- Change Wi-Fi channel or frequencies to improve signal and throughput if interference from other access points is present.
Liquid Damage
- Liquid damage voids device warranties.
- Liquid contact indicators (LCIs) inside devices change color upon contact with liquid.
- Power down device and remove components if water damage occurs.
- Avoid powering on, charging, or operating the device. Remove case, cards, and battery if possible.
- Allow device to dry completely in a dry area before attempting to power it on.
- Although commonly suggested, rice is less effective than desiccants like silica gel packs for drying devices.
Heat Issues
- Overheating can damage mobile devices.
- Internal sensors shut down devices to prevent heat damage.
- Charging, discharging, CPU usage, and display usage generate heat.
- App usage utilities identify apps causing high CPU usage and heat.
- Avoid direct sunlight to prevent overheating and automatic shutdown.
Device Freezing
Hard Reset
- Black screens that don't respond to input may require a reset.
- For Apple devices, a soft reset involves holding the Power button and sliding to power off.
- Hard reset Apple device by holding Power and Home/Volume buttons for 10 seconds, then see the Apple logo appear, indicating a restart.
- On Android can be achieved by removing the battery if removable or, holding Power and Volume buttons.
Damaged Interfaces
- Damaged interfaces may cause charging or data transfer issues.
- Bent pins or internal damage may be visible upon inspection.
- Interface replacements often require replacing the entire system board and expertise and specialized tools.
Malware Symptoms
- Unusual applications, excessive data transfer, pop-up messages, high CPU usage, and rapid battery depletion indicate malware.
- Run third-party virus scanners to identify unusual software.
Cursor Drift
- Cursor drift, where the cursor moves without input, was common in older technologies.
- Calibration apps can recalibrate the screen and stop random input.
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