iPhone 6 plus adds a 1 in front of phone numbers when I respond to a phone call with a message, then I get an immediate text stating please use a valid 10 digit number!
Why does my iPhone 6 plus add a 1 in front of outgoing response phone call to callers? This makes an incorrect phone number and I immediately get a text message stating the phone number is not valid and to enter a valid 10 digit number. I cannot find how to stop the phone from adding a "1" in front of the callers number.