Apple is cracking down on emoji in apps and no one knows why

Bad news, emoji lovers: Apple is making it much harder for developers to put emoji in apps.
Numerous developers are reporting App Store rejections as a result of using Apple's emoji designs in their apps — something which the company until recently allowed.
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The company appears to be ramping up enforcement of a rule that prohibits app makers from using Apple's emoji in any part of an app, saying it violates Apple's copyright. 
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