I have an iPhone XR and a 2021 12.9" iPad Pro, both with the current version of iOS 15, and and a 2019 27" iMac with the current version of macOS 12. All are signed in with the same Apple ID. I checked my settings for Messages on my iPhone and iPad, and they're identical. My problem is that, for a handful of people in my Contacts, I can no longer send messages to them on my iPad. When I look at the name in the To: field, it's red. When I tap on the name, it says, "[phone number] is not registered with iMessage." If I try to send a text, it says, "Not delivered." I also no longer receive messages from those people. If I try the same thing from my iPhone, the name in the To: field is green. When I tap on the name, it displays the phone number as it appears in my Contacts. I'm able to send and receive messages just fine. Messages on my iMac also works just fine.
I researched the problem online and tried the various suggestions, such as signing out of and back into iCloud on my iPad, turning Messages off and on, and rebooting my iPad. None have worked. There is supposed to be a workaround where you tap on the message or the circled "i" by the message and select "Send as SMS text" (in fact, I remember doing that a couple times in the past for people with Android phones), but that option doesn't appear. I'm wondering if there's some other setting outside of Messages that I need to enable. If it's relevant, I have my T-Mobile phone number as the Send Messages From option on all three devices, and WiFi Calling is enabled. There are only three people in my Contacts for whom I know for sure that this is happening. It happened sporadically in the past for one of them, and I would have been on an earlier iPad and iOS 13 or 14 at the time. Any ideas?
I researched the problem online and tried the various suggestions, such as signing out of and back into iCloud on my iPad, turning Messages off and on, and rebooting my iPad. None have worked. There is supposed to be a workaround where you tap on the message or the circled "i" by the message and select "Send as SMS text" (in fact, I remember doing that a couple times in the past for people with Android phones), but that option doesn't appear. I'm wondering if there's some other setting outside of Messages that I need to enable. If it's relevant, I have my T-Mobile phone number as the Send Messages From option on all three devices, and WiFi Calling is enabled. There are only three people in my Contacts for whom I know for sure that this is happening. It happened sporadically in the past for one of them, and I would have been on an earlier iPad and iOS 13 or 14 at the time. Any ideas?
