Before launching Yandex Direct, check the whole enquiry journey on a phone
A landing page can look finished on a desktop while leaving a phone visitor unsure what to do next. Open the intended advertising page on an actual phone and follow the enquiry path from the first screen. Check that the offer is understandable, the contact control is easy to find and the form can be completed without fighting the keyboard. Use clearly labelled test details and warn the receiving team, so nobody mistakes the check for a genuine customer request.
The ZHADOV website describes Sergey Zhadov's work with Yandex Direct and advertising analytics. Before discussing campaign changes, record what happened during the mobile check: the page opened, the form accepted the entry, a confirmation appeared and the team received the enquiry. If one step failed, note the device and the visible message. Repeat the check after the problem is fixed. This creates a concrete starting point for a discussion about the website and its measurement, rather than treating every missing enquiry as an advertising problem.