How to Recreate Intermittent Errors in Mobile Software

This article discusses the reasons behind the occurrence of intermittent bugs in mobile testing and explores various factors to consider when encountering such issues.

Unreproducible defects, also known as non-reproducible bugs or intermittent bugs, can indeed occur during mobile, desktop, or website testing. These bugs are challenging to identify and fix because they cannot be consistently reproduced under the same conditions.

There are several reasons why unreproducible defects may occur more frequently during mobile testing:


1. Device and platform diversity:

Mobile testing involves a wide range of devices, operating systems, and configurations. Each device may have its own unique set of hardware, software, and network settings, which can greatly influence the behavior of the application.

2. Environmental factors:

Mobile devices are often used in various environments with different network conditions, battery levels, or interference from other apps. These factors can contribute to the inconsistency in bug reproduction.

3. Sensitivity to changes:

Mobile applications can be sensitive to even minor changes in the environment or device settings. This includes updates to the operating system, changes in network connectivity, or variations in memory allocation. Such changes may impact the way the application functions and result in sporadic bugs.

4. User interaction patterns:

Mobile applications heavily rely on user input and gestures. The timing, sequence, or specific actions performed by the user can sometimes trigger elusive bugs that are difficult to reproduce consistently.

A professional software testing company recognizes the challenges posed by unreproducible defects in mobile testing. Testers usually document as much detail as possible about the conditions, steps, and environment while encountering such bugs. This information helps in understanding the factors that may have contributed to the issue and allows developers to investigate potential causes more effectively.

A software testing company must consider various factors during mobile application testing when intermittent software bugs occur. These factors can greatly impact the behavior of the application and can potentially explain why a defect may not be repeated. Some of the situations to consider are:


1. Device Orientation:

The error could be related to a specific device orientation. Testers should try reproducing the defect in different orientations to see if it occurs consistently.

2. Motion Sensors:

If the mobile device was moving when the error occurred, it is possible that the sensors were activated and caused the issue. Testers should try replicating the movement to see if it triggers the defect.

3. User Actions:

Unintended user actions or interactions with the program in a different manner, such as slower inputs, may trigger the defect. Testers should explore different actions and interaction patterns to identify any patterns related to the bug.

4. Background Processes:

Other software products or processes executing on the device could interfere with the application's functionality. Testers should check for any conflicts or resource limitations caused by concurrent processes.

5. Environmental Factors:

Environmental conditions like lighting, temperature, or battery levels can affect device performance. Testers should take note of these factors and see if they contribute to the intermittent bug.

6. Network Conditions:

Different network technologies, providers, weak signals, dead spots, or network transition points can impact the application's behavior. Testers should test the application under various network conditions to identify any network-related issues.

Considering these factors during mobile application testing helps testers understand the context in which intermittent bugs occur. This information can be valuable for developers in identifying and resolving such defects effectively.


Intermittent bugs in mobile software testing present unique challenges due to device and platform diversity, environmental factors, sensitivity to changes, and user interaction patterns. A thorough understanding of these factors helps testers document detailed information about the conditions and environment surrounding the bug occurrence. This information assists developers in investigating potential causes and resolving such defects effectively. By considering these factors, software testing companies can improve their approach to addressing and mitigating intermittent bugs, leading to more robust and reliable mobile applications.

As companies strive to deliver high-quality mobile applications, it is essential to incorporate comprehensive testing solutions. WeTest Live Testing, for example, allows testers to observe how the app behaves under real user scenarios. This product assures that the app functions correctly, ensuring a smooth experience for all users. By leveraging WeTest Live Testing and considering the aforementioned factors during mobile app testing, companies can enhance their testing strategies and deliver exceptional mobile experiences.

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