Why FaceTime On iPhone Is Grayed Out (And What You Can Do To Fix It)
Once you do, you can verify if FaceTime is still grayed out in the Settings app. You should also check if FaceTime is rigged ...
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Yes, You Can Join Apple FaceTime Calls From an Android Phone or PC. Here's How
Apple has a way for Android phone owners (and people on Windows PCs) to join FaceTime calls with iPhone users. No special software required. Here's how it all works.