This is a webpage for a courier company. This screengrab is the whole page as served to me. If I want to track my parcel I have to enter the details into the pretend phone on the right and pretend to use it like a phone, complete with tiny screen and fiddly controls.

I get that they would like me to install their app but this is almost offensively user-hostile design, and pretty much ensures I'll never install anything of the sort. I might consider installing the app of a company who deliver to me regularly and have a good track record of being good at their jobs, if that app offers useful functionality which can't be offered via a web page - but even that's unlikely. But these guys who I have never heard of until today and are pulling this nonsense? No way.