Until I foolishly upgraded to iOS 11 on my devices, I was able to send blast text messages to my 100+ employees using a couple of Group Texting Apps (namely Group Text+). It would flawlessly send text messages to all my employees with necessary work information whether they had iPhones or Android devices. As soon as I upgraded to iOS 11, the largest group text I could send was to 10 people. It would let me send to larger groups provided everyone had an iPhone with iMessage. There are two big issues with iMessage. 1) Not all of my employees have iPhones. 2) iMessage copies everyone on every response and I do not want this as it clutters up conversations. How can I restore my ability to SMS text large groups of people now that I have iOS 11? The app developers have been no help and I have tried everything from toggling on and off iMessage, and doing network resets, etc. Also, it seems the issue is with all of my various texting apps as none of them work now. They all did before the upgrade.