US civil liberties group the Electronic Privacy Information Centre (Epic) claim that Jay-Z’s app, which was exclusively available to Samsung customers as part of their deal, collects "massive amounts of personal information from users, including location data". This, according to The BBC.

Jay ZJay Z wearing a ridiculous chain

According to Epic, the "Magna Carta app also includes hidden spam techniques" that makes users promote Magna Carta Holy Grail to their friends. The company have also complained about mobile communication phenomenon Snapchat recently.

In a statement, Samsung said: "We are aware of the complaint filed with the FTC and believe it is baseless. Samsung takes customer privacy and the protection of personal information very seriously. "Any information obtained through the application download process was purely for customer verification purposes, app functionality purposes and for marketing communications, but only if the customer requests to receive those marketing communications"

Jay ZThings haven't gone quite to plan for Jay Z and his new album

Jay-Z’s collberation with Samsung was supposed to be a turn of marketing genius, with customers of the mobile company getting access to Magna Carta Holy Grail before anyone else, and Jay-Z pocketing a cool lump of capital in the process, not to mention all the press it was getting.

But technical issues and these privacy complaints have marred the entire process. "Our permissions are in line with other apps' standard permissions. Samsung is in no way inappropriately using or selling any information obtained from users through the download process," add Samsung.

The Magna Carta Holy Grail app was released on 4 July with Samsung paying $5m (£3.2m) for digital copies for its customers.