Answer to "Speaker phone option is greyed out"Just to give an update, I called AppleCare and spoke to a senior advisor. He was really helpful and told me he would ask about getting a replacement and call me back. Two hours later I got a call back telling me I can go to any store for another free replacement. I had to wait 90 min because I didn’t have an appointment but I did get my phone replaced again.
Answer to "Speaker phone option is greyed out"I had the same problem in May and Apple replaced my device for free. Now 5 months later, it did it again while on the latest 12.01 iOS! Went back to the Apple store expecting another replacement and they want to charge me $319 to replace it because the 90 day warranty on the previous replacement has expired. The guy at the Apple store said they stopped giving free replacements because they were giving out replacements left and right!