...Martin D. Mileros; Robert Forchheimer Purpose Personal data is today recognized as an asset in the digital economy, generating billion-dollar annual revenues for many companies. But how much value do users derive from their seemingly free apps (zero-price services), and what user costs...

... the 4G enabled devices. Originality/value Although many studies in the literature estimated the implicit price of mobile phone attributes, none of these had explicitly assessed the impact of network mode generation of mobile phones on their prices. Tanvir Ahmed is the corresponding author and can...

... presented by the FT500 as laid out in Table I . As can be seen, size is defined here by reference to the capital values of the companies listed, the reasons for which can be found in the earlier articles. Coverage is restricted to companies with a free float – the proportion of shares available...

... is that there has been a widespread write‐down in the capital values of telecommunications companies of all kinds on a scale that has few, if any equals in other sectors. The article analyses the reasons for this phenomenon, concentrating upon the issue of indebtedness. Data are presented on a variety of indicators...