The above website works fine on my Laptop but I have noticed unexpected behavior when I ran it on my Phone.
How should I solve this?
Thanks in advance.
You should debug your site.
The issues you’re experencing are unlikely to be related to specifically hosting with Netlify, and cross-browser / cross-device testing and debugging is just a part of life for a web developer.
You can get yourself an account with BrowserStack to see how your site performs in different situations.