iPhone 5S speak to text button on keyboard vanished.
I've been using speak to text for several months, because I've been having a few eye surgeries, and still can't see the keyboard even with large/bold font. About 4 days ago, the button on the keyboard with the microphone icon vanished. I took the phone to Verizon, but they had no idea why it would just disappear. Spoke with tech support while going through all of the settings with them. No cure found. Help? My vision is getting worse with increased internal bleeding and retinal detachment. I need the speak to text function back desperately!!
iPhone 5s, iOS 10.3.3