I read the posts, I did the seemingly impossible, then I saw the auto-reply actually work 10 mins ago! It was such a relief. Wow, works so well on email auto-response out of office, but texting was near Impossible to make happen! I did what everyone said to do on dozens of forums -- allow in the messages settings, allow focus to be accessed - check. I allowed the driving focus to auto reply to all contacts. Done. I set my personal message - done. I created a lock screen just in case I had to - done. I then followed a suggestion to turn Off the messages having access to focus, then deleting the driving focus, Then turning off the phone then back on again - done. Then...add the messages to allow and access focus. Check! Then, I added my driving focus back in and repeated - auto reply to all contacts, set my lock screen, set my message that auto-saved from the previous session. I tested it - it actually worked!! Then, I tried it from another phone. It DID NOT WORK!!! UNTIL.....I added the contact in the SEND-FROM phone, then it worked. WOW, The sender has to have the recipient in THEIR contacts too, not only the recipient needing to have the Sender saved as a contact. That's really too bad, since if the sender only has text history such as when they just receive a text from the recipient or Just receive the phone number and name of the recipient but they do not save their contact info for WHATEVER REASON, if the sender AND the recipient do not both have each other saved as contacts, it will not work! I do not know what the harm would be if the recipient has the sender contact info saved and the sender texts, why would they NOT receive an auto-response!? Well, it appears that they will not, unless BOTH the sender and the recipient are contacts saved in one another's phones. Mystery solved! So, there is NO WAY to guarantee that all senders will receive auto-responses, since the recipient can never be sure that the sender has the recipients' contact info saved!! Well, finally cracked the code, but wow, what a time suck. Hopefully this helps! I do not usually post anything anywhere, but I felt that this could help a LOT of people since I spent SO MUCH TIME on this!! Oh, and I just realized that iMessage has to be turned off too apparently.