Answer to "Speaker phone option is greyed out"Having the same similar issue, for one minute to another, I received a call, I couldn’t hear them, or them me. Looked to clean the speaker option, greyed out. Hard Reset about 5 times, yet nothing. When I start up the phone, the Apple icon is lite up for like 5 minutes while starting up. (Usually doesn’t take that long to light up). It’s an Iphone7.