Mobile Application Developer

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“Mobile Application Developer Frequently Asked Questions in various Mobile Application Developer job interviews by interviewer. The set of questions are here to ensures that you offer a perfect answer posed to you. So get preparation for your new job interview”



35 Mobile Application Developer Questions And Answers

21⟩ Explain me what is onboarding and why is it so important for mobile design?

User onboarding is the process of increasing the likelihood that new users will successfully adopt your product.

When launching a product, you need to spend a lot of time and resources to attract a sufficient number of users. There are a variety of means to attract users to your app, including advertising, referral programs, public relations, and content marketing. But when people finally download the app, they sometimes feel abandoned or let down. Therefore, you must do a good job at showing users why they need your app and how they should use it.

Onboarding can sometimes be an integral part of the app, where we show the user how to behave within the app. This dive in effect is especially useful if we incorporated some new features that might be unfamiliar to our users. Tooltips can also be used to show them how things work.

The same approach can be used when we have complex systems. With tooltips we can explain why some things are there or why others are not. It’s something like a guided tour of your app, where hints are only triggered when the user reaches an appropriate point in their experience. Thus, hints may appear in different orders for different users and actions.

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22⟩ Explain me what is the best search pattern for mobile phones?

Displaying faceted-search controls on mobile devices in a ‘tray’ overlay is a new and effective way of displaying both results and filters on relatively small mobile screens.

Faceted search lets users refine a set of results by applying filters that comprehensively describe the search space. The ability to narrow down searches is invaluable for users who need to find something specific within a large content set. This type of search has become common for e-commerce/m-commerce and travel websites, as well as many different types of document and media collections.

A faceted system includes two critical elements:

Simple controls to construct sophisticated searches - providing familiar controls like drop-down menus and checkboxes with natural-language labels. This allows ordinary users to narrow down a large set of results to a smaller set that meets their exact criteria, without any knowledge of Boolean logic or query syntax.

Simultaneous display of the facet controls and the results - Showing both the filters and the results at the same time makes it easier for users to understand the relationship between the two; ideally, this is reinforced by dynamically updating the results set as soon as the user selects filter criteria.

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23⟩ Tell us how could AR and VR change the future of mobile design?

Pokemon Go changed the rules of the game and created a new trend in mobile design and gaming. The combination of Augmented Reality (AR) and flexibility provided by smartphone platforms helped create a whole new user experience. These emerging technologies will bring monumental changes to digital product design.

The gaps between smart devices (smartphones, tablets, laptops, wearables) are being blurred with each consecutive product generation. Rapidly evolving hardware is bringing AR closer to mainstream users, even though the concept has been around for a while. There are many reasons why the interface will evolve. Designers are no longer limited by technology, their biggest limitation today is their own creativity. It is also important that many of these emerging technologies are reasonably priced, or seamlessly integrated in new devices at no extra cost to the user.

The design process in the future will change. For example, in order to make an interface for VR we need specialist skills, and we need to create UIs in 3D. In addition to designing 3D assets, designers will also have to master certain skills, for example learn some Unity basics, or employ 3D design software.

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24⟩ Please explain me what is the best way to improve User Experience (UX) without changing the interface?

Animation has long been used as an eye-catching element that helps differentiate an app from its competitors.

Now, however, more designers are incorporating animation as a functional element that enhances the user experience, to simulate the appearance of interacting with a real object.

Animation is no longer just for games. It also illuminates navigation: Think of a button that toggles a panel of otherwise hidden content, such as a menu. Closing the panel shrinks the menu, where it disappears back into the button. Other examples include zooming content or providing feedback to confirm a user’s action.

Functional animation makes app experiences more dynamic and provides a more direct visualization of the user’s actions. As smartphones become more advanced, designers are adding HTML5 animation and parallax design to mobile apps to bring a new level of richness and excitement to the mobile user experience.

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25⟩ Explain me do you have experience in building the features I’m looking for?

Before you begin interviewing potential candidates, create a wish list of which features your app must have, and which are nice to have. A list gives your potential mobile app developer an exact idea of what you’re looking for.

Once you have that list, ask the developer what functionalities and features they have experience developing. If your app requires very specific integrations that need to be included, then you’ll need to work with a developer with experience.

An experienced developer may still be capable of learning the functionality building you need; speak with them one-on-one to learn more.

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26⟩ Tell me how will you handle app testing?

More important than the actual development of an app is the testing itself. You don’t want to launch an app that hasn’t been thoroughly tested. Bugs and problems with features can happen, but should only happen during the testing period.

A mobile app developer should handle all of the testing and employ methodologies that tracks all features, establishes that they have all been implemented, and are in working order. Testing should be conducted during and after mobile app development.

It’s important to seek outside help in mobile app testing. You and a mobile app developer will have been working on the same project for a while, therefore may be unable to identify flaws or drawbacks. Consider seeking an outsider’s point of view.

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27⟩ Please explain how can designers leverage audio to enhance user experience?

Big players like Google and Apple are already using this approach to provide better UX while using their mobile platforms. Apple has Siri, while Google has Google Now. In order to enhance UX at some point, we can use voice for certain actions.

Cars can teach us a couple of basic things about designing with audio input for better user experiences. The first is that user experience design should not be limited to the usual graphic user interface (GUI).

For example, automotive apps could use voice to enhance user experience while the user is focusing on driving. Various car manufacturers have been integrating voice controls in their automotive infotainment systems for years.

Let’s imagine you are building an app that will alert the driver when the vehicle is approaching a speed camera or a built-up area. All it will take for the driver to take notice and adjust their speed is a simple audio alarm. The car has no means to visually inform drivers that they are about to hit the curb, which is why audio warnings are used for lane departure solutions as well, and similar audio warning systems have been employed in aviation for decades.

Sound tends to be very useful when we go beyond the GUI, especially when it’s necessary to alarm users and prompt them to act as soon as possible. This could be one of the examples how audio can enhance the user experience well beyond the screen.

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28⟩ Explain me do you have any experience migrating an app from one platform to another?

Most apps must be available on more than one OS, so experience reconfiguring or migrating an app from one platform to another is a very valuable treat. Tell about your experience in this field and detail the apps you have reconfigured and the solutions you have found to do it. If you don’t have any experience, expose the reasons why you think you are technically prepared to do it.

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29⟩ Tell us what size companies have you worked with in the past?

If you’re a large enterprise, you might feel more comfort knowing the mobile app developer you want to hire has similar experience.

The same goes for a startup business launching a mobile app. Businesses of different sizes operate very differently. The work atmosphere and culture could be very different from what the mobile app developer is used to, and therefore might not be the best fit.

If the developer has a keen understanding of processes, how paperwork and procedure is managed and budgets, then he or she may be a valuable asset to your team.

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31⟩ Do you know how to help me make money off my app?

It could take awhile before your mobile app is earning money (after all, have you seen all the free apps on the App store?). It’ll take time for your app to be recognized and widely used by your target audience. Once that happens, you’ll have the authority to charge a small fee for your app.

A mobile app developer should have some understanding of how to monetize a mobile app. There are several ways: in-app advertising, subscriptions, pay per download.

If your app will be free for the first little while, then your developer should have an understanding of mobile advertising networks.

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32⟩ Explain me how do you handle security issues?

Security is always a very delicate subject especially when talking about mobile devices. Show your knowledge about security and expose your ideas about how to minimize security issues in the app they are creating. Get informed, was there a recent attack to a specific type of software? Mention it and be prepared to explain how you would have solved it.

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33⟩ Tell me do you do code reviews?

One of the fastest ways to grow as a developer is to have other people read and comment on your code. Frequent code reviews mean the team is committed to getting better.

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35⟩ Explain me what kind of smartphone do you use?

This is a no brainer! You’re going to be developing apps for mobile so your smartphone is one of your main tools. I bet you’re not going to have any problem answering this but it will be good that you demonstrate familiarity and knowledge on how to use more than one OS and brand.

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