Do not over-do on features
As a developer, you need to make sure that your app is as user-friendly as possible. In order to do this, it's important to know what features your users really want and need out of the app.
Over-doing on features can lead to a lot of problems in terms of usability and maintainability. Here are some examples:
Too many features will make the overall size of your mobile application larger than it needs to be; this makes it harder for users who have limited data plans or storage space on their devices (or both) because they'll have more content than they can actually use at any given time. This also means that when users do manage their data usage carefully enough not only will they save money but also won't run into any issues with downloading certain files because there aren't enough free resources left over after everything else has been done already so all we have left now is "unused" storage space available now which means no more room left over but instead an empty folder full only consisting entirely outwards towards itself without any outward movement whatsoever yet still feeling lonely nonetheless because there hasn't been any noticeable movement yet either way since everything else seems stuck inside itself instead too afraid even just once try anything new might get hurt again later down road if things start falling apart too much then everything starts crumbling down faster than before which means nothing gets fixed anytime soon until next year comes around again where hopefully things won't happen again anytime soon either since then maybe something goes wrong again
Do not overlook platform-specific features and/or capabilities
It is important to remember that iOS and Android have different capabilities, so you need to consider the user's expectations when developing. For example, if a user wants to be able to make payments through your app (e.g., paying bills), then they will not expect you to provide this functionality on both platforms. In addition, they may not have access to your platform because it is not available in their country or region; therefore you should make sure that any payment processing features are localized accordingly.
You should also consider how users interact with their environment: what kind of device do they use? Do they have connectivity issues? What language does the user speak? These are just some examples of things that could affect how easy it is for them experience using your mobile application but also determine how much time they'll spend using it too!
Consider the app's performance on different devices with varying speed of Internet
When you're developing a mobile app, it's important to consider the performance of your product on different devices with varying speed of Internet connections. In other words, how will your app perform when it's used on a tablet or a smartphone? How will it perform when someone else is using their own personal device at home instead of an internet café?
For example, if you're developing an app that collects user data and sends it back to the company who owns the product (in this case, your employer), then it doesn't matter if someone uses their phone or laptop while they browse through photos on Facebook—your app will still work just fine as long as they have access to Wi-Fi or cellular data service. On the other hand, if you're creating an educational game like Candy Crush Saga or Angry Birds Star Wars II: Lightsaber Battle II; then those apps need high bandwidth (fast) connection speeds so users can play without any lag time between clicks/swipes/moves etcetera..
Test your application properly before release
It is important to test your application properly before release. You can do this by testing it on different devices and networks, as well as browsers and operating systems.
You should also check that your app works in different locations around the world, such as in different cities or countries.
Make sure you understand your target audience and their expectations
When it comes to developing a mobile app, you should understand your audience. This means that you need to know what they expect from an application and how they use it.
You can do this by talking with potential users of your product and asking them questions about their experience with other apps in the market. You should also conduct surveys among people who have used similar products before so as not to get any wrong ideas about what people want from their mobile devices.
Once all this information has been gathered, it will be easier for you when writing down what kind of content would be included on each page of your app (or website).
Too many (good) things can actually make some of those things become bad
If you’re developing a mobile app and want to avoid too many things, here are some things to keep in mind:
The more features your app has, the more complex it will be. This means that there are more parts of your code that need to be tested individually and often (just like any other software). So if you have 20 different functions in one screen, there is a good chance that something won't work as expected because of all those different pieces interacting with each other.
More features also mean longer loading times for users on slower devices or networks where connectivity can be slow at times—and this would probably affect their experience even more since they're using a mobile device instead of just using their computer or laptop/netbook which still have decent bandwidth speeds even though they aren't as fast as desktops anymore due mainly due lack of programs being developed specifically made around such platforms like HTML5 technologies etcetera...