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220-1102 Practice Question: A user's iPhone 13 suddenly shows a black screen…
A user's iPhone 13 suddenly shows a black screen with a spinning gear icon after an iOS update. The device does not respond to touch or button presses. What is the most likely cause and the correct first step?
⚠ Common exam trap
CompTIA often tests the distinction between a force restart and DFU mode, where candidates mistakenly jump to DFU restore (Option C) as the first step, not realizing that a force restart is a non-destructive recovery method that resolves most post-update boot loops.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Force restart the iPhone by pressing and releasing Volume Up, then Volume Down, then holding the Side button until the Apple logo appears.
The black screen with a spinning gear icon after an iOS update indicates the device is stuck in a boot loop or update process, not a hardware failure. A force restart (Volume Up, Volume Down, hold Side button) is the correct first step because it forces the iPhone to reboot without erasing data, often resolving temporary software hangs. This sequence is specific to iPhone 7 and later models, including the iPhone 13, and bypasses unresponsive touch or button inputs.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
The battery is dead; connect to a charger and wait.
Why it's wrong here
If the iPhone's battery were completely depleted, it would typically display a low battery icon (a red battery symbol) or remain entirely unresponsive with a blank screen when attempting to power on. A black screen with a spinning gear, however, indicates that the device is powered on and actively attempting to load the operating system or process an update. This symptom points to a software hang rather than a lack of power, making connecting to a charger an ineffective primary solution.
- ✓
Force restart the iPhone by pressing and releasing Volume Up, then Volume Down, then holding the Side button until the Apple logo appears.
Why this is correct
This specific button sequence (press and release Volume Up, then press and release Volume Down, then press and hold the Side button) is the standard force restart procedure for iPhone 8 and newer models, including the iPhone 13. It performs a hardware-level reset, interrupting any hung software processes, such as a frozen operating system or a stalled update. This action often resolves issues like a black screen with a spinning gear by forcing the device to reboot cleanly without data loss.
- ✗
Place the device in DFU mode and restore via Finder.
Why it's wrong here
Device Firmware Update (DFU) mode is a low-level recovery state that allows the iPhone's firmware to be restored, often used when standard recovery mode fails or the device is completely unresponsive. While it can resolve severe software corruption, entering DFU mode and restoring the device will erase all user data and settings. It is premature to attempt DFU mode before trying a simple force restart, which is a non-destructive troubleshooting step.
- ✗
The screen is damaged; replace the display assembly.
Why it's wrong here
A physically damaged screen typically manifests as cracks, dead pixels, discolored lines, or complete unresponsiveness to touch, often without any display output or showing distorted images. A black screen that *also* displays a spinning gear, however, clearly indicates that the display hardware is functional and receiving output from the device's GPU. This symptom points to a software-related issue, such as a frozen operating system or a failed update, rather than a hardware fault with the display assembly itself.
Visual reference
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Related to this question
Learn chapter
Virtualization and Client-Side
Key term
Boot loop
A boot loop is a computer startup failure where the device repeatedly turns on and off or restarts without ever fully loading the operating system.
Key term
iOS
iOS is Apple's mobile operating system that powers iPhones and iPads, providing a secure and user-friendly platform for apps and services.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This 220-1202 practice question is part of Courseiva's free CompTIA certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the 220-1202 exam.