However, this phrase is not commonly used in English and doesn't convey the same meaning as it does in Portuguese.
In Portuguese, "Tem boi na linha" is a slang expression used to indicate that someone is trying to contact you, usually through a phone call.
Here are some possible English translations that capture the meaning better:
* Someone's on the phone
* You have a call
* There's a call for you
* Someone's trying to reach you
The best translation depends on the context and the level of formality you want to convey.