Aaron Tilley (Hacker News):
Right now, the call feature of these apps runs in the background even when not in use, which allows the apps to connect calls faster, but also allows them to make others , unrelated tasks such as collecting data. Now, Apple limits background access so that it can only be used for Internet calls.
Apple's move will force Facebook to redesign its messaging apps, say two people familiar with the problem. It can have a particularly big impact on WhatsApp, which has used the Internet dialing feature in a variety of ways, including implementing the app's end-to-end encryption, the people said.
In a statement, a Facebook spokesman said that the company does not collect data through the calling feature.
Michael Potuck (via Ben Sandofsky ):
Apple's former App Store evaluation manager, Phillip Shoemaker, shared concerns about how Facebook might have been or still uses the background app access.
Shoemaker also noted that Facebook was trying to keep the PushKit API in the main app when the company shared Messenger as a standalone app in 2014. When Apple took hold, Facebook got Facebook to remove the API.
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