I had a problem with my iPhone 6s: Bluetooth stopped working. I got in touch with Apple’s chat support and was given advice on how to fix it. The advice was to “reset all settings” on the phone, advice rivalled in its cretinous stupidity only by my idiocy in following it (it made no difference to Bluetooth, of course, and a later advisor, who bothered to run some diagnostics on my phone, tells me the problem lies with the battery - but that’s another matter).
Anyway, after a very long time spent restoring all my settings, I find that the phone no longer appears in Messages on my MacBook; Messages preferences lists email addresses but no phone number. Texts sent from the phone don’t appear on my Mac, and all messages sent from the Mac seem to come from my mac.com address, not my phone, and they don’t appear on the phone.
I’ve tried signing out of the Messages account and signing back in, but it makes no difference. In “Internet accounts”, my phone is shown as a listed device.
Any ideas on how to restore the link between my phone and Messages?