@Avi K: “Englishman, The Litvaks in Israel speak Hebrew. I once was waiting in a governent office with an older immigrant from Russia and a Litvak. The Russian addressed him in Yiddish and he had a very difficult time trying to answer.”
Sure, there are those who speak Ivrit. There are also many who speak Yiddish. I know myself since we were neighbors and friends of quite a few of them in Yerushalayim. I must say that, from experience, it seems that Bnei Brak has more (monolingual) Ivrit-speakers while Yerushalayim has more primarily Yiddish-speakers.