Omzet mobiele operators gaat dalen
door de sterke afname variabele gesprekskosten.
Retail telecoms service revenue in Western Europe, by service type, 2008–2014 [Source: Analysys Mason, 2010]
door de sterke afname variabele gesprekskosten.
Retail telecoms service revenue in Western Europe, by service type, 2008–2014 [Source: Analysys Mason, 2010]