Of course have. Some providers have "features" that allow fraudsters to find out a mobile phone number. And in some cases, even quietly sign up for any paid service (for example, described here https://habrahabr.ru/post/196894/ ).
I specifically wrote "features", because in some cases these are real vulnerabilities, and in some it seems like an agreement with a telecom operator, issued as "caring for the user."
On the other hand, home wifi is also not always safe. There are mentions of vulnerabilities that allow you to interact with the router (you open the page in the browser, and it is already a tricky way to knock on the router. The address of the router is usually known and is usually logged in there) and register your settings there (for example, custom dns).
UPD
Remembered, there are still sites, when entering which, it offers to update the flash player or the version of android. And so gently predalgayut click on the buttons. Many on this lead. As a result, the malware is installed on your phone, and what will it do ... and who knows.