• Data reference period
• Place of residence (Portugal)
• Highest completed level of education

• COMPLETE EDUCATIONAL LEVEL:  Higher level of education that has been successfully completed, or for which equivalence has been obtained, and which confers a certificate or diploma.
• RESIDENT POPULATION:  Set of persons who, regardless of being present or absent in a given housing unit at the moment of observation, have lived in the place of their usual residence for a continuous period of 12 months prior to the moment of observation, or have arrived to the place of their usual residence during the period of 12 months prior to the moment of observation, with the purpose of living there for a year, at least.
• REFERENCE PERIOD:  Period to which the information refers and which may be a specific day or a time interval (month, fiscal year, calendar year, among others).

(Persons aged between 16 and 74 years old who have their own mobile phone /Resident population aged between 16 and 74 years old)*100