1) Disable Zoom option
Are you one of the web site designers who use "User-scalable = no"> "in their rhythmic designs without thinking about it?" If this is the case, I must tell you that you're doing a big mistake. By not allowing users to zoom in on their website pages, they give them the feeling that you're taking control of things completely and do not value them for their desires.

2) False understanding of user behavior
Web site owners are often so busy with the task of creating a web site that ignores the behavior of their customers against this responsive design. After doing any responsive design, analyzes should be performed on those who are involved with it to evaluate its performance. For example, website owners should review their website for mobile users separately from home PC users after creating a responsive design for their website. In fact, there should be many other parameters that reflect the interaction of phone users with the web site, separately, to ensure that users and purchasers are satisfied with the design of your website and the responsiveness of your website.

3) Use a fixed program in multiple designs
There are many campaigns that have begun to create all-in-one software programs for rusive design. But the problem with using such programs is that a single application may not fit all designs, because mobile phone platforms require more attention and accuracy. Web designers, for example, use Cocoa and Xcode to work with ios, but this does not mean that they can be used for all platforms.

4) Not paying attention to the problem of routing users on the website
If you have a menu on your website with more than 3 options, then instead of putting all the options on the page, it's better to design me as a drop down menu, which has less space. And make sure that users see all the options on their cellphone screen. Additionally, you need to remember to create a mobile-friendly website design in an in-built design using an icon-based Icon-Based Layout.

5) Do not test
Testing a web site's performance before it's published is something that must and must be done, but some website designers and programmers who work on a website's web site ressure, after completing their work with the website. They forget to do the necessary tests to ensure the proper functioning of the website. At least the tests that must be done before the site is published, its performance is evaluated in different browsers and different mobile devices.