Wipro Mobile App Development Interview Questions & Answers
Curated interview practice questions with answers. These are practice scenarios, not a verified list of past interview questions.
About Wipro hiring for Mobile App Development roles
Wipro is an Indian multinational technology services and consulting company providing IT, cloud, cybersecurity, engineering and data analytics services to enterprises worldwide. Its delivery teams work on application development, quality engineering and data platforms for clients in sectors like banking, healthcare and energy. In India it hires for testing, data analysis, support and development roles through programmes such as Wipro Elite NTH.
For Mobile App Development roles, this Wipro practice set focuses most on React Native Core (6), Dart and Flutter Basics (6), React Native Navigation, State and Native Modules (5), Mobile Backend, APIs and Firebase (4). It has 12 easy, 16 medium, 2 hard questions, so you can start easy and work up to the harder ones.
Company type
IT services
Headquarters
Bengaluru, India
Main India offices
Bengaluru, Hyderabad, Pune, Chennai, Kolkata
Wipro Mobile App Development interview process
Online assessment (aptitude + written communication)
Coding test
Technical interview
HR round
Typical pattern based on public candidate experiences. Rounds vary by role, team and year.
Solved for WiproStart practicing
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01
Explain the mobile app lifecycle states on Android and iOS.
Both platforms move apps between foreground active, inactive, background and terminated states. On iOS, an app goes inactive during interruptions like calls, then background, where it gets limited time before suspension. On Android, activities move through resumed, paused and stopped, and the process can be killed in background. Cross-platform apps observe these through AppLifecycleListener in Flutter or AppState in React Native to pause work and save data.
TestFlight distributes iOS beta builds to internal testers on your team and external testers, up to 10,000, after a light beta review. Play Console offers internal testing for quick distribution to up to 100 testers, closed testing for selected groups, and open testing for anyone to join. Using these tracks catches device-specific bugs and gathers feedback before production, and staged rollouts then limit risk further.
03
Write a React Native component that requests location permission and shows the coordinates using Expo.
Situation: a new teammate spent two days on a Flutter layout that kept overflowing. Task: help without taking over. Action: I sat with them, showed how to use the widget inspector to see constraints, and explained the constraints go down, sizes go up rule with their own screen. Result: they fixed it in an hour and later solved similar issues alone. I also added the explanation to our team wiki.
React Native lets you build mobile apps with React and JavaScript or TypeScript. You write components like View, Text and Image, and React Native renders them as real native views on Android and iOS. JavaScript runs on the Hermes engine, and with the New Architecture it communicates with native code directly through JSI rather than an asynchronous JSON bridge. Business logic and most UI code are shared between platforms.
BuildContext is a handle to a widget's location in the element tree. It is used to look up inherited data like Theme.of(context), MediaQuery and Navigator, and providers. Each widget's build method gets its own context. Common mistakes are using a context from above a widget that provides data, or using a context after an async gap when the widget may be unmounted; check context.mounted before using it after await.
08
What is an Expo project and how does it differ from a bare React Native project?
Expo is a framework and toolset for React Native that provides prebuilt native modules, file-based routing with Expo Router, EAS cloud builds and over-the-air updates. With Continuous Native Generation, Expo creates the android and ios folders from app config and config plugins, so you rarely edit native code. A bare project manages native folders directly. Expo is now the officially recommended way to start React Native apps.
09
How does navigation work in React Native with React Navigation?
React Navigation provides navigators: native stack for push and pop screens using platform transitions, bottom tabs, drawer and material top tabs. You nest navigators, for example tabs inside a root stack with modal screens. Screens receive navigation and route props or use hooks like useNavigation and useRoute. Version 7 adds a static configuration API for better TypeScript inference and automatic deep link setup.
10
What are the JS thread and UI thread in React Native and why do they matter?
JavaScript, including React rendering and business logic, runs on the JS thread, while the native UI thread draws views and handles touches. If the JS thread is busy with heavy computation or large re-renders, taps and JS-driven animations lag even though the UI thread is free. Keep heavy work off the JS thread, move animations to the UI thread with Reanimated, and split expensive tasks into smaller chunks.
Store data in a local database and render the UI from it, so the app works without network. Queue user changes locally with a pending status and sync them in the background when connectivity returns, using retries with backoff. Fetch server changes using timestamps or sync tokens and merge them. Resolve conflicts with clear rules like last write wins or server authority, and show sync status to users.
createState creates the State. initState runs once for setup like controllers and subscriptions; do not use inherited widgets there. didChangeDependencies runs after initState and when inherited data changes. build runs on every rebuild. didUpdateWidget runs when the parent rebuilds with new configuration. dispose runs when removed permanently, where you cancel streams, dispose controllers and timers to avoid memory leaks.
In Bloc, the UI adds events, the Bloc handles them with on<Event> handlers and emits new immutable states, and widgets rebuild with BlocBuilder or react with BlocListener. A Cubit is a simpler version where the UI calls methods directly and the Cubit emits states, without event classes. Use Cubit for straightforward logic and full Bloc when you need event transformations like debounce or detailed traceability.
14
How do you pass parameters between screens and type them safely?
Pass small, serialisable params like IDs with navigation.navigate('Details', { id }), and read them with route.params. Define a param list type, such as type RootStackParamList = { Details: { id: string } }, and use it with the navigator and hooks for type checking. Avoid passing functions or large objects, which break state persistence and deep linking; fetch full data on the destination screen.
15
A screen re-renders every time the user types in a search box, making it laggy. How do you fix it?
Keep the search text state local to the search input component so only it re-renders, debounce the query before updating the list or calling the API, and memoise the list and row components. Avoid storing frequently changing values in a global store that many components subscribe to. Use the React DevTools profiler to confirm which components render, and useDeferredValue to keep typing responsive.
Hermes is a JavaScript engine optimised for React Native. It compiles JavaScript to bytecode at build time, so the app does not parse and compile JavaScript on startup, which reduces time to interactive, memory use and app size. It is the default engine on Android and iOS. It supports debugging with Chrome DevTools-based tools and sampling profiling to find slow JavaScript.
17
How does Flutter render UI differently from React Native?
Flutter draws every pixel itself using its own rendering engine, Impeller, onto a canvas, so widgets look identical across platforms and do not depend on native UI components. React Native maps components like View and Text to real native views, so the UI uses platform controls. Flutter gives pixel consistency and predictable performance; React Native gives native look and easier reuse of native view libraries, plus web developer familiarity with JavaScript.
Expo Router is a file-based router built on React Navigation. Files in the app directory become routes, so app/product/[id].tsx maps to /product/42. Layout files define stacks and tabs, and every screen is deep-linkable automatically on mobile and web. It supports typed routes, protected routes for auth, and API routes. It reduces navigation boilerplate and makes URL-based linking consistent across platforms.
19
What are privacy declarations required by the app stores?
The Play Store requires a data safety form describing what data is collected, shared, encrypted and deletable, plus a privacy policy link and account deletion option for apps with accounts. The iOS App Store requires privacy nutrition labels, a privacy manifest file for the app and listed third-party SDKs describing data use and required reason APIs, and App Tracking Transparency permission before tracking users across apps.
20
How do you handle platform-specific code in React Native?
Use Platform.OS checks or Platform.select({ ios: ..., android: ... }) for small differences in styles or behaviour. For larger differences, create files with platform extensions like DatePicker.ios.tsx and DatePicker.android.tsx, and the bundler picks the right one automatically. Keep platform branches inside small components so screens stay shared. Native platform differences, such as permissions setup, are configured in native files or Expo config plugins.
21
What are the steps to publish an app on the Play Store?
Create a Play Console developer account, create the app and fill in store listing details, screenshots, privacy policy, content rating, data safety and target audience forms. Build a signed release App Bundle with a unique application ID and increasing versionCode, and use Play App Signing. Upload to internal or closed testing first, then promote to production with a staged rollout. New personal accounts must complete a closed test with testers before production access.
22
How do you handle gestures such as swipe to delete in React Native?
Use react-native-gesture-handler, which processes gestures on the native side, often with Reanimated for smooth animations. For swipe to delete, the Swipeable or ReanimatedSwipeable component renders action buttons behind a row. Define gestures with the Gesture API, such as Gesture.Pan, and compose them when needed. Wrap the app root in GestureHandlerRootView. Provide an accessible alternative like a long-press menu for screen reader users.
A Future represents a value that will be available later, like an HTTP response. Marking a function async lets it use await, which pauses that function until the Future completes without blocking the event loop. Errors are handled with try-catch. Dart runs on a single-threaded event loop per isolate, so awaiting network calls keeps the UI responsive. Use Future.wait to run independent futures concurrently.
24
What is the difference between StatelessWidget and StatefulWidget?
A StatelessWidget has no mutable state; its build output depends only on constructor parameters and inherited data. A StatefulWidget creates a State object that persists across rebuilds and holds mutable data; calling setState marks it dirty so build runs again. Use stateful widgets for local UI state like animations, text controllers or toggles, and lift shared or business state into a state management solution.
25
How do you set up CI/CD for a cross-platform mobile app?
On every pull request, run lint, formatting checks, unit and widget or component tests. On merge, build signed Android and iOS release artifacts using CI services such as GitHub Actions, Codemagic, Bitrise or EAS Build, with signing keys stored as secrets. Use fastlane or EAS Submit to upload to internal testing tracks and TestFlight. Automate version numbers, generate release notes and run smoke tests with Maestro.
26
Explain Row, Column, Expanded and Flexible in Flutter layouts.
Row lays out children horizontally and Column vertically, with mainAxisAlignment and crossAxisAlignment controlling placement. Expanded forces a child to fill remaining space along the main axis, and Flexible lets a child take up to its share but be smaller. Using flex values divides space proportionally. A common error is an unbounded width or height, such as a ListView inside a Column without Expanded, which throws a layout exception.
27
What local storage options exist for Flutter and React Native apps?
For simple key-value settings, Flutter uses shared_preferences and React Native uses AsyncStorage or MMKV. For sensitive data, flutter_secure_storage or expo-secure-store use Keychain and Keystore. For structured data and queries, use SQLite via sqflite or drift in Flutter and expo-sqlite or WatermelonDB in React Native. Object stores like Isar, Hive or Realm also exist, but check maintenance status before choosing.
28
How do you secure Cloud Firestore data accessed directly from a mobile app?
Because the app talks to the database directly, security rules are the backend. Write rules that check request.auth for authentication and that users can read or write only their own documents, for example allow read, write: if request.auth.uid == userId. Validate fields and types in rules, never leave test mode rules open, and move sensitive operations like payments or role changes to Cloud Functions. Test rules with the emulator suite.
29
What is accessibility in mobile apps and how do you implement it?
Accessibility makes apps usable by people with disabilities. Provide labels for icons and images so screen readers like TalkBack and VoiceOver can announce them, keep touch targets at least 44 to 48 points, support dynamic text sizes, ensure colour contrast, and avoid conveying information only by colour. Flutter uses Semantics widgets, and React Native uses accessibilityLabel and accessibilityRole. Test with screen readers enabled.
The app registers with the platform push service, FCM on Android and APNs on iOS, often both through FCM, and receives a device token. The app sends this token to your backend, linked to the user. When an event happens, the backend sends a message to FCM or APNs with the token, which delivers it to the device. The app requests notification permission, handles taps to open the right screen, and refreshes tokens when they change.
Tips to crack the Wipro Mobile App Development interview
Prepare for the essay writing section in the online test by practising short, clear, grammatically correct essays on general topics.
Revise basic coding problems on strings and arrays plus fundamentals of DBMS, operating systems and computer networks.
Learn about Wipro's values, known as the Spirit of Wipro, and its focus areas such as cloud and cybersecurity.
Keep a one-minute story ready for every project on your CV: problem, your part, tools, result.
Practise the hard questions on this page aloud; Wipro interviewers usually ask follow-ups on your first answer.
Frequently asked questions
How many rounds are there in the Wipro Mobile App Development interview?
Candidates usually go through 4 stages: Online assessment (aptitude + written communication); Coding test; Technical interview; HR round. The exact rounds change with the role, team, location and your experience, so confirm the process with the recruiter.
Which topics should I prepare for the Wipro Mobile App Development interview?
This practice set leans on React Native Core (6), Dart and Flutter Basics (6), React Native Navigation, State and Native Modules (5), Mobile Backend, APIs and Firebase (4). Revise those first, then practise explaining one or two of your own projects end to end, because most Wipro interviewers ask you to walk through real work.
Are these the exact questions asked at Wipro?
No. These are curated practice questions that match the skills and difficulty usually tested in it services interviews like Wipro's. They are not a leaked or verified list of past questions.
Where does Wipro hire Mobile App Development professionals in India?
Wipro has large teams in Bengaluru, Hyderabad, Pune, Chennai, Kolkata. Openings and locations change often, so check the Wipro careers page and filter by city and experience.
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