The number of mobile subscriptions contains all the subscriptions acquired by households and companies, excluding such subscriptions that have been sold to be used only in so-called Machine-to-Machine use (e.g. for electricity metres).
Mobile data-transfer subscriptions can be divided into different kinds of subscriptions, according to subscription agreements. In the statistics, subscriptions have been classified first by means of invoicing ground of data-transfer into mobile broadbands and into other subscriptions. Mobile broadband subscription refers to either 1) a mobile data connection that does not include traditional telephony. These types of connections cannot be used for telephony, and the pricing scheme does not include telephony charges. In other words, these connections can only be used for data transmission and possibly for sending SMSs and MMSs. Or to 2) all subscriptions that include data transmission services subject a monthly charge or that have been used to purchase data transmission services in the last three months and that can also be used for traditional telephony which is subject to a pricing scheme.
From 2H2017 onwards, prepaid subscriptions that have been used for data transfer are included to mobile broadbands.