IOS 10.3.1 phone call microphone not working.
Ever since i updated to the IOS 10.3.1, whenever i make phone calls to friends and family ( The ones that have not updated yet ) I can hear them perfectly fine through my speaker, and whenever i am talking to them, they cannot hear me at all, all they hear is static, but whenever i plugin my headphones and talk to them through the headphone microphone they can hear me just fine. Im assuming this is an issue that needs to be resolved in the IOS 10.3.1 update, because all of my friends that have updated to the 10.3.1, are having the same issue as I. I also have the same issue whenever I facetime my friends, I have to use headphones for them to hear me and not static. It is an iphone 7 plus and it's a new phone, and it worked properly before i updated it, so i know it isnt a hardware issue, it has to be an issue with the IOS 10.3.1 update that was released.
iPhone 7 Plus, iOS 10.3.1, null