Quick answer
У вас есть вай-фай?
u vas yest váy-fay — pronounced “vay-fay”, plus how to ask for the password
The options
Saying it
Russians say вай-фай with the stress on the second part and no “w” sound. The network name is сеть and the password is паро́ль — masculine, despite the -ь.
Reading out a password
Passwords are dictated letter by letter using Latin names, or you will simply be handed a card. Useful: ма́ленькими бу́квами (lower case), без пробе́лов (no spaces), все ци́фры (all digits).
What you hear back
Typical mistakes
моя́ паро́ль
мой паро́ль
паро́ль is masculine.
У вас есть интерне́т? — when you mean wifi
У вас есть вай-фай?
Both are understood, but вай-фай is what people ask in cafés.
Check yourself
Which is correct?