Among other things, Spotify will gather photographs, contacts and other types of multimedia files.
Besides, the service will gather GPS info, accelerometer data, as well as voices that were recorded while voice-controlling the smartphone.
Although Spotify said the new data collection tools are being introduced to improve its services and that users would be able to opt out, the updated policy generated angry responses.
The real reason? Ad prices, apparently.
The majority of Spotify's 75 million users are on the free, advertising-supported version of the service, although the new policy also applies to its 20 million paying subscribers, Telegraph writes in a report.
Some of the high-profile users have already turned their profiles off because of the new policy, including Markus Persson, the creator of Minecraft.
However, Spotify did say it values its users’ privacy and that it will allow anyone to opt out of sharing some data.
It said collecting more data would allow it to improve the service. Daniel Ek, its chief executive, personally responded to concerns on Twitter.
“We explicitly will ask when using camera or GPS. However both changing playlist image and running feature,” he said.