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CCNA Mobile Device Accessories Questions

30 questions · Mobile Device Accessories · All types, answers revealed

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1
MCQhard

A user wants to connect their smartphone to a car's stereo system that only has an auxiliary input (3.5mm jack). The smartphone has a USB-C port and no headphone jack. Which accessory is required?

A.A USB-C to USB-A cable.
B.A Bluetooth FM transmitter.
C.A USB-C to 3.5mm adapter.
D.A 3.5mm extension cable.
AnswerC

This adapter plugs into the phone's USB-C port and provides a 3.5mm jack that can connect to the car's auxiliary input.

Why this answer

A USB-C to 3.5mm adapter converts the digital audio from the phone to analog for the car's auxiliary input. A Bluetooth receiver would add wireless functionality but is not a direct wired solution. The correct answer is a USB-C to 3.5mm adapter.

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2
MCQmedium

A marketing team uses tablets to capture customer signatures on glass screen protectors. They report that the capacitive stylus often skips or fails to register strokes near the edges of the screen. After testing, you find the issue persists even without the protector. Which accessory should you recommend to improve stylus precision?

A.A tempered glass screen protector with an oleophobic coating
B.A Bluetooth keyboard
C.A fine-tip active stylus
D.A different passive capacitive stylus with a larger tip
AnswerC

Active styluses communicate with the device's digitizer for greater precision, reducing skipping and edge inaccuracies.

Why this answer

A fine-tip active stylus uses a digitizer layer for precise input, unlike passive capacitive styluses that rely on conductivity and can be inaccurate. A screen protector or Bluetooth keyboard won't address stylus accuracy, and a different capacitive stylus may still have the same issue.

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3
MCQmedium

A user wants to connect their laptop to a 4K TV for a movie marathon. They have a USB-C port on the laptop but the TV only has HDMI. Which accessory is required?

A.A USB-C to DisplayPort adapter.
B.A USB-C to HDMI adapter.
C.A USB-C to VGA adapter.
D.A USB-C to Ethernet adapter.
AnswerB

This is correct; it converts the USB-C video signal to HDMI for the TV.

Why this answer

A USB-C to HDMI adapter or cable is needed to convert the signal from USB-C to HDMI. This allows the laptop to output video to the TV. The correct answer is a USB-C to HDMI adapter.

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4
MCQhard

A user has a laptop that supports Thunderbolt 3 and wants to connect two external 4K monitors at full resolution. They currently have a single USB-C hub that only supports DisplayPort over USB-C. What is the most likely limitation?

A.The laptop's graphics card cannot drive two 4K monitors.
B.The hub does not support Thunderbolt 3 bandwidth.
C.The monitors are not compatible with USB-C.
D.The user needs a USB-C to HDMI adapter for each monitor.
AnswerB

Thunderbolt 3 requires a compatible dock to deliver the necessary bandwidth (40 Gbps) for dual 4K displays; a standard USB-C hub may only support single display or lower resolutions.

Why this answer

Thunderbolt 3 supports dual 4K displays, but a standard USB-C hub may not have the bandwidth or proper support for multiple high-resolution displays. A Thunderbolt 3 dock is required for full functionality. The correct answer is the hub does not support Thunderbolt 3 bandwidth.

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5
MCQmedium

A user has a laptop that supports USB-C Power Delivery and wants to charge it using a portable power bank while on a flight. The power bank has a USB-A output. Which additional accessory is required?

A.A USB-A to USB-C cable.
B.A USB-C to USB-C cable.
C.A power bank that supports USB-C Power Delivery output.
D.A USB-C to HDMI adapter.
AnswerC

To use USB-C PD, the power bank must have a USB-C port that supports PD output. The current power bank lacks this, so a new power bank is required.

Why this answer

USB-A ports do not support Power Delivery, which requires USB-C. A USB-C to USB-C cable is needed to enable PD charging from a power bank that has a USB-C output. Since the power bank only has USB-A, a USB-A to USB-C cable will not support PD.

The correct answer is a USB-C to USB-C cable, but the power bank lacks a USB-C port, so the user needs a power bank with USB-C output or a different solution. Actually, the correct answer is a USB-C to USB-C cable, but since the power bank only has USB-A, that won't work. The best option is to get a power bank with USB-C output.

However, the question asks for an additional accessory, so the correct answer is a USB-C to USB-C cable, but it won't work with a USB-A power bank. Let me rephrase: The user needs a power bank that supports USB-C PD output. The correct answer is a power bank with USB-C output.

I'll adjust the options accordingly.

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6
MCQmedium

A user wants to use a wired headset with their tablet for voice calls, but the tablet only has a single USB-C port and no 3.5mm jack. The headset has a 3.5mm plug. Which accessory should you recommend?

A.A USB-C hub with multiple ports.
B.A Bluetooth audio adapter for the headset.
C.A USB-C to 3.5mm adapter.
D.A 3.5mm Y-splitter cable.
AnswerC

This adapter plugs into the tablet's USB-C port and provides a 3.5mm jack for the headset, enabling wired audio.

Why this answer

A USB-C to 3.5mm adapter converts the digital USB-C signal to analog audio, allowing the headset to work. A splitter would not help because the tablet lacks a 3.5mm port. The correct answer is a USB-C to 3.5mm adapter.

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7
MCQmedium

A user reports that their laptop's external monitor connected via USB-C to HDMI adapter flickers intermittently. The adapter works fine with other devices. What is the most likely cause?

A.The HDMI cable is defective.
B.The USB-C port on the laptop has a loose connection.
C.The monitor's refresh rate is set too high for the adapter.
D.The laptop's graphics driver is outdated.
AnswerB

This is correct; a loose port can cause intermittent signal loss, leading to flickering.

Why this answer

Intermittent flickering often points to a loose or damaged cable or port. Since the adapter works elsewhere, the issue is likely with the laptop's USB-C port or the cable connection. The correct answer is a loose connection at the laptop port.

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8
MCQmedium

A small business owner wants to use a smartphone as a point-of-sale (POS) terminal for credit card payments. They ask which accessory is essential for this setup. What should you recommend?

A.A portable Bluetooth speaker for transaction alerts.
B.A rugged case to protect the phone from drops.
C.A magnetic stripe reader that plugs into the headphone jack.
D.A high-capacity power bank for extended use.
AnswerC

This is correct; such readers are designed for mobile POS systems.

Why this answer

A card reader that connects to the smartphone via the headphone jack or Bluetooth is essential for processing credit card payments. This accessory allows the phone to read the magnetic stripe or chip. The correct answer is a dedicated card reader.

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9
MCQmedium

A customer wants to use a portable projector with their smartphone for impromptu presentations. The smartphone has a USB-C port that supports DisplayPort Alt Mode. Which accessory will enable this connection?

A.A USB-C to USB-A adapter
B.A USB-C to HDMI adapter
C.A Bluetooth audio receiver
D.A wireless HDMI dongle
AnswerB

This adapter uses the USB-C Alt Mode to transmit HDMI video and audio, making it compatible with the projector.

Why this answer

A USB-C to HDMI adapter leverages the smartphone's DisplayPort Alt Mode to output video to the projector's HDMI input. A USB-C hub with HDMI would also work, but a direct adapter is the simplest. A wireless adapter or USB-C to USB-A cable cannot carry video signals.

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10
MCQeasy

A customer wants to connect a Bluetooth keyboard and mouse to their tablet for a presentation. They ask which accessory is needed to ensure both devices work reliably from across the room. What should you recommend?

A.A USB-C hub with Bluetooth functionality to extend range.
B.A Bluetooth adapter plugged into the tablet's charging port.
C.A Bluetooth extender or repeater to boost signal strength.
D.A wireless dongle that connects both keyboard and mouse via a single receiver.
AnswerC

This is correct; a Bluetooth extender can increase the effective range, ensuring reliable connection from across the room.

Why this answer

A Bluetooth adapter is not needed if the tablet already has Bluetooth, but a Bluetooth extender or a USB hub with Bluetooth can improve range. However, the most straightforward answer is that a Bluetooth adapter (if the tablet lacks built-in Bluetooth) is essential, but since most tablets have it, a simple Bluetooth keyboard and mouse set will work. The correct answer here is that a Bluetooth adapter is not required; the tablet's built-in Bluetooth is sufficient, but for range, a Bluetooth extender can help.

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11
MCQmedium

A technician is setting up a mobile point-of-sale system for a small retail store. The tablet needs to be mounted on the counter and remain powered throughout the day. Which two accessories are essential for this deployment?

A.A rugged case and a Bluetooth keyboard.
B.A stand and a charging dock.
C.A screen protector and a stylus.
D.A portable battery pack and a car charger.
AnswerB

The stand provides a stable mount, and the charging dock ensures the tablet remains powered all day, which is essential for continuous operation.

Why this answer

A secure stand keeps the tablet in place, and a continuous power source (such as a charging dock or cable) ensures it stays charged. A screen protector is optional, and a Bluetooth keyboard is not needed for a POS system. The correct answer is a stand and a charging dock.

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12
MCQeasy

A customer wants to use their tablet as a secondary display for their laptop while traveling. They need a solution that does not require a Wi-Fi network. Which accessory should you recommend?

A.A Bluetooth keyboard and mouse set.
B.A USB-C to HDMI adapter.
C.A wireless display adapter like Miracast.
D.A portable battery pack.
AnswerB

This adapter connects the tablet to the laptop's video output, allowing the tablet to serve as a monitor via a wired HDMI connection, which does not rely on Wi-Fi.

Why this answer

A USB-C to HDMI adapter allows the tablet to act as a monitor via a wired connection, which works without Wi-Fi. Wireless solutions like Miracast or AirPlay require a network. The correct answer is the USB-C to HDMI adapter.

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13
MCQmedium

During a conference call, a user complains that their wireless earbuds keep disconnecting from their smartphone every few minutes. The earbuds work fine when paired with a different phone. What is the most likely cause?

A.The earbuds have a low battery.
B.The smartphone's Bluetooth driver is outdated.
C.Bluetooth interference from other devices in the conference room.
D.The earbuds are not compatible with the smartphone's Bluetooth version.
AnswerC

Conference rooms often have many wireless devices (phones, laptops, projectors) that can cause Bluetooth interference, leading to frequent disconnections.

Why this answer

When an accessory works with one device but not another, the issue is likely with the original device's Bluetooth configuration or interference. Interference from other devices or a poor Bluetooth antenna in the phone are common causes. The correct answer is Bluetooth interference from other devices in the conference room.

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14
MCQhard

A user reports that their smartphone's wireless charging pad stops charging after a few minutes, and the phone gets very hot. The phone supports Qi wireless charging. The technician tests the pad with another phone and it works fine. What is the most likely cause?

A.The phone's battery management system is faulty.
B.The phone's wireless charging coil is misaligned with the pad.
C.The phone case contains metal or magnetic components that interfere with charging.
D.The wireless charging pad is not Qi-certified.
AnswerC

This is correct; metal can cause eddy currents, leading to heat and charging interruption.

Why this answer

Since the charging pad works with another phone, the issue is with the user's phone. A thick case, especially one with metal or magnetic components, can interfere with wireless charging and cause overheating. The correct answer is a case with metal or magnetic parts.

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15
MCQeasy

A technician is setting up a new tablet for a field worker who needs to capture signatures from customers. The tablet has a standard USB-C port. Which accessory is most appropriate for this task?

A.A Bluetooth keyboard for typing notes.
B.A capacitive stylus with a fine tip.
C.A USB-C to HDMI adapter for external display.
D.A screen protector to prevent scratches.
AnswerB

This is correct; a stylus provides the precision needed for signatures.

Why this answer

A stylus with a fine tip is ideal for capturing signatures accurately on a touchscreen. Capacitive styluses are common for this purpose. The correct answer is a capacitive stylus, as it provides precision.

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16
MCQeasy

A field technician frequently uses a ruggedized tablet outdoors for data collection. They complain that the screen is hard to read in direct sunlight. Which accessory would best improve screen visibility without adding significant bulk?

A.A privacy filter
B.An anti-glare screen protector
C.A portable external monitor
D.An external battery pack
AnswerB

Anti-glare protectors diffuse reflected light, making the screen more readable in sunlight without adding bulk.

Why this answer

An anti-glare screen protector reduces reflections and improves readability in bright environments. A privacy filter, while reducing glare, also restricts viewing angles, which is not the primary need. A portable monitor or external battery do not address screen readability.

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17
MCQhard

A user complains that their wireless Bluetooth earbuds frequently disconnect during calls when their smartphone is in their pocket. The earbuds work fine when the phone is on a desk. Which accessory or configuration change is most likely to resolve this issue?

A.A Bluetooth signal booster app
B.A Bluetooth neckband style headset
C.A metal phone case
D.A Wi-Fi analyzer to change router channels
AnswerB

Neckband headsets have the Bluetooth receiver near the user's collar, reducing signal blockage from the body.

Why this answer

Bluetooth signal can be blocked by the human body, especially when the phone is in a pocket. Using a Bluetooth neckband or headset with an external antenna can improve signal reception. A Bluetooth signal booster or case may help, but a neckband physically positions the receiver closer to the phone.

Wi-Fi interference is less likely given the scenario.

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18
MCQmedium

A user connects a USB-C docking station to their laptop and finds that the external monitor works, but the Ethernet port on the dock does not provide network connectivity. The laptop's built-in Wi-Fi works fine. Which is the most likely cause?

A.The Ethernet cable is faulty
B.The USB-C port on the laptop is damaged
C.The docking station's Ethernet driver is not installed
D.The laptop's Wi-Fi is interfering with Ethernet
AnswerC

Many USB-C docks require specific drivers for Ethernet to function; without them, the network adapter is not recognized.

Why this answer

USB-C docks often require driver installation for Ethernet functionality. If the driver is missing, the network adapter won't be recognized. A faulty cable or disabled port could also cause issues, but driver issues are common.

The monitor working confirms the dock's power and video pass-through are functional.

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19
MCQmedium

A user reports that their laptop's battery drains quickly when connected to a USB-C docking station, even when the laptop is plugged into the dock's power delivery port. The dock supports 60W power delivery, but the laptop requires 65W. What is the most likely issue?

A.The laptop's battery is failing
B.The dock's power delivery is insufficient for the laptop
C.The USB-C cable is not rated for power delivery
D.The laptop is running high-performance mode
AnswerB

When the dock provides less power than the laptop needs, the laptop supplements from its battery, leading to gradual discharge.

Why this answer

If the power delivery from the dock is less than the laptop's requirement, the laptop will draw power from both the dock and its battery, causing it to discharge slowly. This is a common issue when using underpowered chargers. A faulty battery or high-performance settings could contribute but are not the primary cause.

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20
MCQeasy

A user reports that their smartphone's screen protector has a large bubble in the center and the edges are lifting. They installed it themselves two days ago. What is the most likely cause of this issue?

A.The screen protector is incompatible with the phone model.
B.The phone's screen has a manufacturing defect.
C.The user did not properly clean the screen before installation.
D.The screen protector is a tempered glass type, which is prone to bubbles.
AnswerC

Dust, oil, or moisture left on the screen prevents the adhesive from bonding evenly, leading to bubbles and lifting edges. This is the most common cause of such issues.

Why this answer

Screen protector bubbles and lifting edges are almost always caused by improper installation, such as not cleaning the screen thoroughly or not aligning the protector correctly. Even high-quality protectors will fail if the surface isn't perfectly clean and dust-free. The correct answer is improper installation.

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21
MCQeasy

A user complains that their smartphone's screen protector has started peeling off at the edges after a few weeks. They installed it themselves. What is the most likely cause of this problem?

A.The screen protector is of low quality and does not fit the device model.
B.The user did not clean the screen properly before installation, leaving dust or oil.
C.The smartphone case is too tight and pushes the protector off.
D.The device's screen has a factory oleophobic coating that repels the adhesive.
AnswerB

This is correct; improper cleaning leads to poor adhesion, causing edges to lift over time.

Why this answer

Improper installation, such as not cleaning the screen thoroughly or misalignment, is the most common cause of screen protector peeling. Dust or oil under the protector prevents proper adhesion. The correct answer focuses on installation technique.

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22
MCQmedium

A technician is configuring a tablet for a delivery driver who needs to navigate and take photos of packages. The driver complains the tablet's screen is hard to see in direct sunlight. Which accessory would best address this issue?

A.A high-brightness screen protector that boosts luminance.
B.A privacy screen filter to reduce viewing angles.
C.An anti-glare screen protector with a matte finish.
D.A sunshade hood that attaches to the tablet case.
AnswerC

This is correct; it reduces glare and improves outdoor visibility.

Why this answer

An anti-glare screen protector reduces reflections and improves outdoor visibility. Matte finishes diffuse light, making the screen more readable in bright conditions. The correct answer is an anti-glare screen protector.

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23
MCQeasy

A user reports that their smartphone battery drains quickly and the device feels warm to the touch, especially when using wireless charging. They are using a third-party wireless charger. What is the most likely cause of this issue?

A.The smartphone battery is defective and needs replacement.
B.The wireless charger is not properly matched to the device's charging standard, causing inefficient power transfer.
C.The device's operating system needs an update to support wireless charging.
D.The user is using a case that is too thick for wireless charging.
AnswerB

This is correct; mismatched charging standards lead to heat generation and slow charging, which can drain the battery faster.

Why this answer

The correct answer is that the wireless charger is not properly matched to the device's charging standard, causing inefficient power transfer and excess heat. This is a common issue with third-party chargers that lack proper certification. Using a charger designed for the device's specific wireless charging standard resolves the problem.

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24
MCQhard

A technician is deploying tablets for use in a warehouse where workers wear gloves. The tablets need to be used for scanning barcodes and entering data. Which accessory is most critical for this environment?

A.A screen protector.
B.A Bluetooth keyboard.
C.A rugged case.
D.A capacitive stylus.
AnswerC

A rugged case provides drop protection and seals against dust, which is critical in a warehouse environment where tablets may be dropped or exposed to debris.

Why this answer

A rugged case protects against drops and dust, which is common in warehouses. A capacitive stylus can be used with gloves, but a rugged case is more critical for durability. The correct answer is a rugged case.

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25
MCQhard

A technician is setting up a mobile workstation for a graphic designer who uses a laptop with a USB-C port that supports Thunderbolt 3. The designer needs to connect two 4K monitors, a wired Ethernet connection, and charge the laptop simultaneously. Which accessory should the technician choose?

A.A USB-C to dual HDMI adapter
B.A Thunderbolt 3 docking station
C.A USB 3.0 hub with HDMI and Ethernet
D.A KVM switch
AnswerB

Thunderbolt 3 docks offer high bandwidth, dual 4K support, Ethernet, and power delivery, meeting all requirements.

Why this answer

A Thunderbolt 3 docking station provides high bandwidth (40 Gbps) to support dual 4K displays, Ethernet, and power delivery over a single cable. A USB-C hub may not have enough bandwidth for dual 4K output, and a USB-C to HDMI adapter alone cannot provide Ethernet or charging. A KVM switch is for sharing peripherals between computers, not for this purpose.

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26
MCQhard

A technician is troubleshooting a laptop that will not charge via its USB-C port. The laptop uses a USB-C power adapter that works with other devices. The technician tests the port with a known-good USB-C flash drive, and it is not detected. What is the most likely issue?

A.The laptop's battery is completely dead and needs replacement.
B.The USB-C port is damaged or has bent pins.
C.The power adapter is not outputting enough wattage.
D.The laptop's BIOS settings have disabled the USB-C port.
AnswerB

This is correct; physical damage prevents both charging and data transfer.

Why this answer

Since the USB-C port fails to detect a flash drive and also does not charge, the port itself is likely damaged. This could be due to bent pins or internal damage. The correct answer is a damaged USB-C port.

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27
MCQeasy

A sales representative reports that their tablet's screen becomes unresponsive when they try to use it with a capacitive stylus. They need to annotate documents during client meetings. Which accessory should you recommend to resolve this issue?

A.A Bluetooth keyboard
B.A fine-point capacitive stylus
C.A screen protector
D.A passive stylus with a rubber tip
AnswerB

A capacitive stylus is designed to work with capacitive touchscreens, providing the necessary conductive tip for accurate input.

Why this answer

Capacitive touchscreens require a conductive stylus to register touch. A fine-point capacitive stylus provides the necessary conductivity and precision for annotation, unlike a passive stylus or a Bluetooth keyboard which won't affect touch input.

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28
MCQhard

A user wants to use a portable SSD with their tablet for video editing. The tablet has a USB-C port that supports USB 3.1 Gen 2. They need to transfer large files quickly and also charge the tablet simultaneously. Which accessory should they use?

A.A USB-C to USB-C cable
B.A USB-C hub with power delivery pass-through
C.A USB-C to USB-A adapter
D.A wireless SSD with Bluetooth 5.0
AnswerB

This hub allows the tablet to charge via the hub's PD port while the SSD connects at USB 3.1 Gen 2 speeds.

Why this answer

A USB-C hub with power delivery (PD) pass-through allows the tablet to be charged while connecting the SSD at full speed. A direct USB-C to USB-C cable would not allow simultaneous charging. A USB-A adapter would limit speed, and a wireless SSD would introduce latency and require separate power.

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29
MCQeasy

A user wants to connect their smartphone to a hotel TV to stream a presentation during a conference. The TV has only an HDMI port and no wireless capabilities. Which accessory is most appropriate for this task?

A.A USB-C to USB-A hub
B.An MHL-to-HDMI adapter
C.A Bluetooth speaker
D.A wireless display adapter like Chromecast
AnswerB

MHL (Mobile High-Definition Link) adapters allow smartphones to output video and audio to HDMI displays.

Why this answer

An MHL or SlimPort adapter converts the smartphone's USB-C or micro-USB output to HDMI, enabling video and audio output to an external display. A USB hub, Bluetooth speaker, or wireless display adapter would not directly connect to a wired HDMI port.

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30
MCQmedium

A user reports that their smartphone's wireless charging pad stops charging after a few minutes. The phone charges fine with a cable. The charging pad works with another phone. What is the most likely cause?

A.The charging pad is defective.
B.The phone's battery is faulty.
C.The phone case is too thick or contains metal.
D.The phone's wireless charging coil is damaged.
AnswerC

Thick cases or those with metal components can interfere with wireless charging, causing it to stop after a few minutes due to overheating or misalignment.

Why this answer

Wireless charging requires proper alignment and can be disrupted by thick cases or metal objects. Since the pad works with another phone, the issue is likely with the phone's case or placement. The correct answer is the phone case is too thick or contains metal.

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