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Study Guide: CompTIA A+ Core Certification: Software Troubleshooting - Troubleshoot Common Mobile OS and Application Issues
Source: https://www.fatskills.com/comptia-a-exam/chapter/comptia-a-core-certification-software-troubleshooting-troubleshoot-common-mobile-os-and-application-issues

CompTIA A+ Core Certification: Software Troubleshooting - Troubleshoot Common Mobile OS and Application Issues

By Fatskills Exam Guides Team — the exam nerds behind 28,500+ quizzes and 2.1M practice questions across 500+ global exams.

⏱️ ~3 min read

220-1102: Objective 3.4: Given a scenario, troubleshoot common mobile OS and application issues.

Table: Common Symptoms of Mobile OS and Application Issues

Symptom Troubleshooting Step(s)
App fails to launch Delete the app and reinstall it.
App fails to close or crashes Delete the app and reinstall it.
Force-stop the app (methods vary by phone or device).
Clear the app’s cache and data (Settings menu).
App fails to update If the app pauses during the update, a file might have been corrupted in transit. Delete the app and repeat the download and install procedures.
App is slow to respond If rebooting does not fix this problem, check the available storage and delete old or unused data. When a phone nears storage capacity, it can lag.
OS fails to update This is likely a storage issue. Check for space, and make enough room for the update to download and launch.
Battery life issues arise Many features that run in the background can limit the battery life of a phone or device. For example:
- Make use of battery optimizing information and settings such as Low Power Mode.
- Reduce the brightness of the screen.
- Identify apps that use more power, and manage them.
- Turn off alert sounds and vibrations.
- Charge the phone or device before it runs out of power. One strategy is to occasionally run the battery down to 10–15 percent capacity and then charge it fully.
Phone or device randomly reboots Close any apps not in use. Determine whether an installed app is the problem by restarting in Safe Mode, removing the most recent app, and then restarting. If problem persists, repeat for other recent apps.
Screen does not autorotate Access the control center (with an iPhone, swipe down from the upper-right corner; on an Android device, swipe down from the top). Tap the rotation lock icon to toggle the setting.
Also check the Display settings and make sure the display is Standard and not Zoomed; the zoom can prevent the screen from rotating.
Connectivity Issues  
Symptom Troubleshooting Step(s)
Bluetooth For both iPhone and Android, the most common solution is to “forget” the device that is failing to pair from the cache.
Wi-Fi Check that signal strength is good. Sometimes walking away from a strong signal activates cellular data and drops the Wi-Fi connection.
Verify the networks and authentication.
Be aware that crowds at large events can overwhelm Wi-Fi (and cell) data systems.
Near-field communication (NFC) Make sure NFC is enabled in the Control Center (for iPhone models up to 11—in subsequent models, NFC is always on and no setting is available).
NFC is good for only a few inches. To connect, be sure that the reader and the phone are nearly touching.
AirDrop For iPhone/iPad:
Make sure the receiving device is both compatible and discoverable.
AirDrop works only when the receiving device is turned on and its screen is awake.
AirDrop uses Bluetooth and Wi-Fi; make sure they are enabled.
Check that Airplane mode is off.

 

For all issues in Table 8-5, the first steps are the same:
Step 1. Remove accessories and external battery packs.
Step 2. Restart the phone or device.
Step 3. Update the OS and the apps.
Sometimes OS updates impact the functions of installed apps.
Phones and other mobile devices might operate in many unexpected ways. Table 8-5 describes several problems and their possible solutions.

Note: These steps assume that the phone or device has been restarted and updated.

 


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