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.
Arabic phonology
Some examples of variation:In Modern Standard Arabic is used as a marginal phoneme to pronounce some dialectal and loan words.
On the other hand it is considered a native phoneme or allophone in most modern Arabic dialects, mostly as a variant of (as in Arabian Peninsula and Northwest African dialects) or as a variant of (as in Egyptian and a number of Yemeni and Omani dialects). It is also considered a separate foreign phoneme that appears only in loanwords, as in most urban Levantine dialects where is and is .