Mobile App Testing

Mobile App Testing involves analyzing mobile apps for functionality, usability, visual appeal, and consistency across multiple mobile devices. It helps ensure an optimal user experience, irrespective of the device used to access the app.

As mobile applications become more integral to business operations and consumer experiences, ensuring their functionality across diverse devices, operating systems, and networks is essential. Mobile app testing plays an important role in verifying performance, usability, and security before an app reaches its audience.

Here’s what you need to know to understand mobile app testing, how to do it right, and its significance for developers and teams trying to build more device-agnostic mobile apps.

What is Mobile App Testing?

Mobile App Testing refers to the process of validating a mobile app (Android or iOS) for its functionality and usability before it is released publicly. Testing mobile apps help verify whether the app meets the expected technical and business requirements.

For successful mobile app testing, teams need to test apps across numerous screen resolutions, operating system versions, and distinct network bandwidths. This helps ensure that the app performs flawlessly across numerous device configurations when released publicly.

At a high level, testing mobile apps includes the following:

• Testing apps performance across distinct OS versions (for example Android 7.0, 8.0, etc)
• Testing apps appearance in both Portrait and Landscape mode
• Validating apps compatibility and performance when operated on specific settings
• Testing whether the app is compatible with mobile sensors like Gyroscope, Accelerometer, GPS, etc.
• Testing the app’s GUI (Menus, dropdown, navigation buttons, etc) for functionality

Why is Mobile App Testing critical?

The primary objective of mobile app development is to broaden business reach and engage users across the globe. However, users are less likely to engage with an app if it is faulty or difficult to navigate. Without thorough testing, mobile apps are prone to critical bugs that can severely impact the user experience, especially for new users.

Below are some critical reasons why mobile app testing is indispensable:

• Device and OS Compatibility: Ensures the app works smoothly across different devices, screen sizes, and operating systems.
• User Experience (UX): Verifies that the app offers intuitive navigation, quick response times, and seamless functionality.
• Performance Under Load: Tests the app’s ability to handle high traffic and varying network conditions without slowing down or crashing.
• Security Assurance: Identifies potential vulnerabilities to protect user data from breaches.
• Regulatory Compliance: Ensures the app complies with industry-specific regulations (such as GDPR, HIPAA).
• Brand Reputation: Helps prevent bugs and performance issues that could negatively impact the user experience and harm the app’s reputation.

Approaches for Mobile App Testing

Mobile app testing can be approached in several ways to ensure optimal functionality, performance, and user experience. The three primary testing methods include manual testing, automated testing, and beta testing.

1. Manual Testing

Manual testing involves human testers who evaluate the app’s features and overall performance. This method is typically employed to assess usability and discover UI issues.

2. Automated Testing

Automated testing leverages tools and scripts to run tests automatically, which is especially valuable for regression testing.

3. Beta Testing

Beta testing involves releasing the app to a limited group of external users (beta testers) before the final release. This method helps gather feedback on performance and identifying bugs missed during earlier testing stages.

How does App Testing benefit your business?

Mobile app testing is not just about identifying bugs and fixing issues; it provides several strategic advantages:

• Enhanced User Experience: Ensures smooth navigation and usability, improving user satisfaction.
• Increased Customer Retention: Reduces bugs and crashes, encouraging users to stay engaged with the app.
• Higher Revenue Potential: Optimizes functionality for better conversions, purchases, and ad views.
• Brand Reputation Protection: Prevents negative reviews and protects your brand’s image.
• Cost Savings: Identifies and fixes issues early, reducing costly post-launch fixes.
• Competitive Advantage: Provides a superior user experience, distinguishing your app from competitors.
• Compliance and Security: Ensures your app meets industry regulations.

How is Mobile App Testing different from Web App Testing?

Mobile applications are specifically designed for operating on mobile devices, while web applications reside on web servers and are accessed through web browsers. Mobile app testing focuses on testing an app across numerous mobile devices whereas web app testing validates the appearance and functionality of websites across multiple browsers.

Types of Mobile Apps

1. Mobile Web App: Responsive versions of websites accessed through mobile browsers.
2. Native App: Developed specifically for mobile devices and their operating systems.
3. Hybrid App: A combination of native and mobile web apps.

Types of Mobile Apps Testing

• Functional Testing: Ensures that the core features of the app work as expected.
• Usability Testing: Assesses the app’s user interface and user experience.
• Performance Testing: Examines the app’s stability and responsiveness under varying conditions.
• Security Testing: Ensures that sensitive user data is properly encrypted.
• Compatibility Testing: Tests the app across multiple devices and operating systems.
• Localization Testing: Evaluates the app for adaptation to different languages and cultures.
• Regression Testing: Confirms existing functionalities are still working after updates.

What features are analyzed in an App Test?

During mobile app testing, several key features are evaluated to ensure the app meets quality standards:

• UI/UX
• Functionality
• Performance
• Compatibility
• Security
• Stability

Who performs Mobile App Testing?

Typically, app development teams have dedicated QAs who conduct mobile apps tests in each sprint. However, non-QA stakeholders (developers, management, product owners, potential users) also participate, which helps consider multiple perspectives in the testing process.

Common mistakes to avoid while running Mobile App Tests

• Don’t start testing without being clear on the purpose of the app.
• Don’t try testing everything at once.
• Avoid relying solely on emulators and simulators for tests.
• Don’t focus only on the UI without vetting backend services.
• Proceed without a comprehensive testing plan.

Strategies for Mobile App Testing

• Be clear about the challenges.
• Use emulators/simulators in the initial stages only.
• Invest in Beta Testing.
• Involve QA teams from early phases of development.

How does BrowserStack help with Mobile App Testing?

BrowserStack allows testing mobile apps on real mobile devices, providing access to real Android and iOS devices on the cloud for manual and automated testing.

1. App Live: An Interactive Mobile App Testing tool that offers access to thousands of real devices.
2. App Automate: An Automated Mobile App Testing tool that integrates with popular testing frameworks.