AlmondMilf (Author)
Perhaps should you start where an iPhone is in use
with co-operative dependence with iMessage, then
we'd have some kind of beginning here..
Continuity features and requirements for Apple devices - Apple Support
//support.apple.com/en-us/108046
Where and when does the exact effect you state, in
your initial question here in this thread? It may or may
not have much to do with Messages. ~ Other macOS
Systems settings, could be acting up. Or in iPhone's.
Use Handoff to continue tasks on your other devices - Apple Support
//support.apple.com/en-us/102426 (see setup 'sharing' details etc)
..This article also concludes with Support Link to ask/get more info..
'Continuity' settings/shared factor; unless we are not on the same subject.
Troubleshooting Continuity on iPhone, iPad, and Mac - imore.com
https://www.imore.com/troubleshooting-continuity-iphone-ipad-and-mac
Use Continuity to connect your Mac, iPhone, iPad, iPod touch, and Apple Watch - Apple Support
//support.apple.com/en-us/HT204681
If you have [or not] an iPhone or iMessage issues, that
might also could use Wi-Fi settings, and you could also
use a wireless base station. When indoors at residence
most factors, a matter of iMessage (not MS Messenger)
are covered by a slew of Apple Support articles.
There are several settings too, using them may allow SMS
and other cellular or wi-fi messages to take place; study it.
Other issues inside the MacBook Air may invite use of
diagnostic look inside. A non-invasive user-friendly app
created by a fellow Apple Community, has made his app
available to ASC members, free; read & use EtreCheck.
How to use the Add Text Feature When Posting Large Amounts of Text
(ie: etrecheck) - Apple Community
//discussions.apple.com/docs/DOC-250000211
The report created w/ this utility can be shared in Text
area + uploads direct from this section. Download Link
+Exact Instructions are within the link, directly above.
Maybe this is a bit large; but since your post leaves many
details out when it comes to what's up, I'm about done!
