can't receive text from other iPhones
I suddenly can't receive text messages from other iPhones (maybe since the last system upgrade?). I send texts, and they go through fine, but when the other iPhone user responds, the message goes to my iPad Messages app or seems to disappear completely if they are not a contact on my iPad. Texts from other types of phones come through fine. I have iMessage turned off on my phone, and I have verified with a couple of the other iPhone users that they only have my cell number in my contact info, not my email address.
iPhone 6s, iOS 11.3.1