Support
iPhone Checker: Device Diagnostics
Bundle ID: com.appsonic.iphonechecker
Last updated: October 2, 2026
Need help with iPhone Checker? This page covers common questions about diagnostic tests, test results, device compatibility, permissions, and troubleshooting. For anything else, contact us by email.
Contact support
Email us and include your iPhone model, iOS version, app version, and a short description of the issue.
Email support@appsonic.comDiagnostics
iPhone Checker is designed to help you test important iPhone hardware and functions in one place. The available tests depend on your iPhone model and the system capabilities available to the app.
Available diagnostic checks may include:
- Display — check basic screen functionality.
- Touch Screen — check touch responsiveness.
- Speaker — check speaker output.
- Microphone — check microphone functionality.
- Vibration — check vibration response.
- Camera — check camera functionality.
- Flashlight — check flashlight operation.
- Battery — review available battery information.
- Connectivity — check supported connectivity functions.
- Other tests — additional checks may be available depending on the device.
Frequently Asked Questions
What is iPhone Checker?
iPhone Checker is a diagnostic tool that helps you test essential iPhone hardware and functions. The app provides guided diagnostic checks and summarizes the results in a simple format.
What iPhone functions can I test?
Depending on your iPhone model and iOS version, the app may provide checks for the display, touch screen, speaker, microphone, vibration, camera, flashlight, battery, connectivity, and other supported functions.
Not every test is available on every iPhone.
How do I run a diagnostic test?
- Open iPhone Checker on your iPhone.
- Select the diagnostic check you want to perform.
- Follow the instructions shown by the app.
- Complete the test.
- Review the result shown by the app.
What does "Passed" mean?
A Passed result means the test completed successfully and the tested function responded as expected during the check.
What does "Warning" mean?
A Warning means the test detected a result that may require attention or that the result has limitations that should be considered.
What does "Failed" mean?
A Failed result means the diagnostic could not confirm that the tested function was operating as expected during the test.
If a test fails, make sure you followed the instructions correctly and try running the test again.
What does "Unavailable" mean?
An Unavailable result means the diagnostic could not be performed on your device. This can happen because a specific capability is not available on your iPhone model or because iOS does not provide the required functionality to the app.
An unavailable test is not the same as a failed test.
Why are some tests unavailable on my iPhone?
iOS controls which hardware information and system functions third-party apps can access. Hardware capabilities also vary between iPhone models.
Because of these limitations, some diagnostic tests may not be available on your particular device.
Why did a test fail even though the feature seems to work?
Diagnostic tests are performed under specific conditions and may not always be able to confirm a function correctly.
Make sure the test instructions were followed and try the test again. If the feature works normally outside the app, a single failed diagnostic result does not necessarily mean that your iPhone has a hardware problem.
What is the overall diagnostic score?
The overall diagnostic score summarizes the results of the tests completed by the app.
It is intended as a convenient overview of the performed checks and should not be interpreted as a guarantee of your iPhone's overall condition or future reliability.
Can I use iPhone Checker before buying a used iPhone?
Yes. You can use the available diagnostic checks as part of your inspection when evaluating a used iPhone.
Diagnostic results should be considered together with the device's physical condition, activation status, battery information, purchase documentation, and other relevant checks.
Can I use it before selling my iPhone?
Yes. Running the available diagnostic tests can help you review important device functions before selling or handing your iPhone to another person.
Why doesn't the app show all battery information?
Apple limits the battery information available to third-party applications. The exact information accessible to iPhone Checker can vary depending on your iPhone model and iOS version.
The app only displays battery information that is available through the system capabilities accessible to it.
Why does the app need camera access?
Camera access may be required for camera-related diagnostic tests. The permission is requested when the relevant test requires camera functionality.
You can manage camera permission at any time through iOS Settings.
Why does the app need microphone access?
Microphone access may be required when performing a microphone diagnostic test.
You can manage microphone permission through iOS Settings. If permission is denied, the corresponding test may be unavailable.
What happens if I deny a permission?
If a diagnostic test requires access to a device function and that permission has been denied, the corresponding test may not be available.
You can change app permissions at any time through iOS Settings.
Does iPhone Checker guarantee that my iPhone is fully healthy?
No. iPhone Checker is a diagnostic tool and cannot detect every possible hardware or software issue.
Diagnostic results are based on the tests available to the app and the capabilities provided by iOS. For a comprehensive inspection or suspected hardware problem, consult Apple or an authorized service provider.
What should I do if the app is not working correctly?
- Close and reopen iPhone Checker.
- Restart your iPhone.
- Make sure iOS is up to date.
- Make sure you have granted any permissions required by the test.
- Try the diagnostic again.
- Contact support if the problem continues.
App Information
- App name: iPhone Checker: Device Diagnostics
- Developer: AppSonic
- Platform: iPhone (iOS)
- Bundle ID: com.appsonic.iphonechecker
- Category: Utilities
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Still need help?
Contact us at support@appsonic.com .
When contacting support, please include your iPhone model, iOS version, app version, and a short description of the issue. This helps us understand and respond to your request more quickly.