Hejaz
Historically, the Hejaz has always seen itself as separate from the rest of Saudi Arabia. The Hejaz is the most populated region in Saudi Arabia; 35% of all Saudis live there. Hejazi Arabic is the most widely spoken dialect in the region. Saudi Hejazis are of ethnically diverse origins.
Hejazi Arabic
A conservative phonological feature that Hejazi holds is the lack of palatalization for the letters , and , unlike in other peninsular dialects where they can be palatalized and merged with other phonemes in certain positions (to [t͡ʃ], [t͡s], [ʃ], or [s] in case of ك, [d͡ʒ] or [d͡z] in case of ق and in case of ج), it is also worth mentioning that this trait of non-palatalization is becoming common across Saudi Arabia especially in urban centers, another feature is that the ل is only velarized to /ɫ/ in the word الله /aɫːaːh/ 'god' (except when it follows an /i/: بسمِ الله or لله ) and words derived from it, unlike other peninsular dialects where it might be velarized allophonically, as in pronounced in Hejazi but in other peninsular Arabic dialects.