iMessages REFUSES to allow you to turn it on when NOT ON WIFI?!

No matter what you try, iOS Messages simply refuses to accept that CELLULAR DATA is ON if you try to enable it with cellular only (even if it was fine before, but you toggled it off for any reason or amount of time). The ONLY way to get it to turn back on is on WiFi. You can turn your phone off/on or toggle cellular data or date/time auto updates until you’re blue in the face all to no avail. EVERY SINGLE OTHER APP (including FaceTime, unless I toggle that off and then it also joins Messages in its idiocy) WORKS FINE.

What the heck good is that? If I had WiFi, I’d not be needing cellular! This is so ridiculous. Is there any real fix other than only ever being able to turn it back on via WiFi (and then it’ll be fine on cellular only until you toggle it off for any reason again)? Seems no fix works other than having WiFi (the real fix has to come from Cupertino and they could care less in years).