Mobile Devices Troubleshooting

A user reports that their iPhone 13 will not charge when plugged into the charging port. The user has tried different cables and power adapters, but the phone still does not charge. The phone's screen and buttons work normally. Which of the following is the most likely cause?

A user reports that their smartphone's screen is flickering and has vertical lines. The phone has not been dropped or exposed to water. Which of the following is the most likely cause of this issue?

A technician is troubleshooting a laptop that powers on but displays a black screen with no boot activity. The technician hears the fan spinning and sees the power LED is on. Which of the following steps should the technician perform next to isolate the issue?

A user complains that their laptop's Wi-Fi connection is extremely slow and keeps dropping, but other devices on the same network work fine. The laptop is an older model running Windows 10. Which of the following should the technician try first?

A technician is troubleshooting a laptop that has a blinking battery light and will not power on, even when plugged into AC power. The technician has already verified the AC adapter is working on another laptop. Which component is most likely faulty?

A technician is configuring a new Android tablet for a warehouse employee. The employee will use the tablet to scan barcodes and access a web-based inventory system. The tablet needs to stay connected to the Wi-Fi network even when the screen is off to receive updates. Which setting should the technician configure?

A customer brings in a tablet that will not turn on. The technician presses the power button and sees no response. The tablet was working earlier in the day. What is the first step the technician should take to troubleshoot this issue?

A user reports that their laptop's touchpad is not working properly. The cursor jumps around randomly when they try to use the touchpad. An external mouse works fine. Which of the following should the technician do first?

A user reports that their smartphone's battery drains very quickly, even when the phone is idle. The phone is less than a year old. Which of the following is the most likely cause of this issue?

A user reports that their Android smartphone's touchscreen is unresponsive after they dropped it. The screen is not cracked, and the device powers on normally. Which of the following is the most likely cause of the touchscreen issue?

A user reports that their iPhone 12 will not turn on after being left in a hot car for several hours. The device feels warm, and pressing the power button does nothing. What is the most likely cause of the device not powering on?

A customer brings in a laptop that will not charge. The technician checks the AC adapter with a multimeter and gets 19V output. When the adapter is plugged into the laptop, the charging LED does not illuminate. What should the technician check next?

A user reports that their laptop's touchpad is not working after they spilt a small amount of coffee on the keyboard. The keyboard still works, but the touchpad cursor does not move. What is the most likely cause?

A user reports that their Windows tablet's battery drains quickly even when the device is idle. The technician checks the battery report and finds that the 'System' process is using a high percentage of CPU. What is the most likely cause?

A technician is configuring a new Android tablet for a field worker. The worker will use a Bluetooth barcode scanner and a rugged case with a built-in keyboard. After pairing both devices, the keyboard types slowly and misses keystrokes, while the scanner works fine. What is the most likely cause?

A technician is troubleshooting a laptop that emits a series of beeps (one long, two short) on startup and displays nothing on the screen. The laptop was working fine until the user installed a new RAM module. What is the most likely cause?

A user complains that their laptop's built-in webcam is not working in video conferencing apps. The device manager shows the camera as 'disabled'. The technician enables it, but the camera still shows a black screen in apps. What should the technician do next?

A user reports that their Android smartphone's touchscreen is unresponsive after they dropped it in a puddle. The device powers on, but the display shows distorted colors and the touch input does not register at all. What is the most likely cause of this issue?

A technician is troubleshooting a laptop that has a blank screen after the user closed the lid and then reopened it. The laptop's power LED is on, and the fan is spinning. Pressing keys does not wake the display. What should the technician do first?

A technician is troubleshooting a Samsung Galaxy tablet that has a cracked screen but still responds to touch. The user wants to transfer data to a new tablet. The technician connects the tablet to a PC via USB, but the PC does not recognize the device. What is the most likely reason?

A user complains that their Android tablet's touchscreen is unresponsive in a vertical strip down the middle of the screen, but the rest of the screen works fine. They have restarted the device and removed the screen protector. What is the most likely cause?

A technician is troubleshooting a Samsung Galaxy tablet that will not rotate the screen when the device is turned sideways. Auto-rotate is enabled in the settings, and the screen rotates correctly in safe mode. What is the most likely cause?

A technician is setting up a new Android tablet for a field sales representative. The tablet needs to connect to the internet via a cellular data plan. The technician inserts a nano-SIM card from the company's carrier, but the tablet shows 'No SIM card' in the status bar. The SIM card works in another tablet. What is the most likely cause?

A user complains that their laptop's touchpad cursor jumps erratically while typing. They have cleaned the touchpad surface, but the issue persists. Which configuration change should you try first?

A customer reports that their Android smartphone's screen remains black when they press the power button, but the device vibrates when receiving calls. They have already tried a force restart by holding Power+Volume Down for 15 seconds. What should you do next to isolate the issue?

A user reports that their laptop's built-in webcam is not working in any application. The device manager shows the camera with a yellow exclamation mark. The technician has already updated the driver to the latest version, but the issue persists. What should the technician do next?

A technician is deploying 20 new tablets for a hospital's nursing staff. After configuring Wi-Fi and email, they find that the tablets will not connect to the corporate 5 GHz wireless network, only to the 2.4 GHz network. All tablets are the same model. What is the most likely cause?

A technician is troubleshooting a Lenovo ThinkPad that will not turn on. When the power button is pressed, the keyboard lights flash briefly, then nothing. The battery is known to be charged. After removing the battery and holding the power button for 30 seconds, the laptop still does not power on. What should the technician try next?

A user reports that their iPhone 13 will not charge when plugged into the USB-C port on their company-issued laptop, but it charges normally from the wall adapter. The laptop's USB-C port works with other devices. What is the most likely issue?

A user reports that their laptop's battery life has dropped significantly over the past month. The battery now lasts only 30 minutes on a full charge. The technician runs a battery report and finds that the design capacity is 50,000 mWh, but the full charge capacity is only 12,000 mWh. What is the most likely conclusion?