You don’t have to be pro designer for application designing, it’s about inner instinct and how passionate you are, and it’s not just about experience designers who can understand that there is more to designing then just making it appealing to eyes, it should feel and be compatible with the inner functionalities, sometimes designs are so stuck up and heavy that they ruin all the functionalities of any mobile development.

Designing for You Not for Users:
Every mobile application development should be design for users end, if your creation need small buttons at least make the click space bigger for the people with big fingers, facilitate your user not yourself.

Forgetting Mobile is No Desktop:
An important fact which is mostly forgotten by many, when going from desktop to mobile and doing minimal changes will of no meaning think about the fact that mobile and tab users are always at short of time, so things should be precise with less numbers of screen and keeping everything together.

Copy Pasting for All Platforms:
Mobile isn’t a desktop, every platform is different in nature, and we should respect that difference rather than designing the same website or application for mobile as desktop and another crime is just doing same designs for all platforms.

Heavy Content:
Loading your application with too much content will not make it slow but will bore the users, and they will not give your application other look if its magnificently amazing features wise, smartphone users hate delay and too much loading time. It’s better to keep things light.

These are the few designing mistakes which mobile app designers can easily refrain from, trying to keep simple and make sure you know the platforms.