CANNOT SEND GROUP TEXTS CONTAINING ANDROID USERS!
I made a trip abroad using Google Fi a few months ago using an iphone xs max. I got back and popped my ATT sim back in. Since then I have been unable to respond to any group text with an android user in it. All "iphone only" group threads work. individual texts with android users works. I can receive the group thread texts, it just wont let me respond to them. I've done every reset imaginable including deleting the thread and starting a new one to no avail. I have since upgraded to an iphone 11 and the problem persists. I've been through two levels of ATT support and pushed to a third that I was told would get back to me in three days. Here we are almost two weeks later with no response. Getting frustrated. Has anyone else had this issue? I did have to change APN settings to use Fi but since putting in ATT sim those settings are no longer accessible to me.