To do that we can make use of mobile emulators which will give us a feel of how the website will look across various smartphones.
So when designing a website, we need to keep in mind how this will look on a smartphone. Many websites are designed, for the PC/laptop and when viewed on a smartphone these look altogether different. One thing, we must keep in mind is that not all websites look the same. Mobile Emulator gives the user a glimpse of what a website would look if viewed on a smartphone.