1) Zuck approves shutting down platform API access for Twitter's when Vine is released #competition
Team considered access to call history considered 'high PR risk' but 'growth team will charge ahead'. @Facebook created upgrade path to access data w/o subjecting users to Android permissions dialogue.
@Facebook statements re: Android SMS and Call Log History
1) internal discussion Feb 4 2015
2) public 'clarifying' statement Mar 25 2018
Q: Are there any contracts or other steps besides whitelisting to launch a feature using the APls?
A: You don't need to worry about any contracts for the api. This is a product we are testing and will be rolling out slowly.