Group texts sending as individual texts on iPhone 15 plus iOS 17.0.3
My group texts to any group with at least one android user are getting sent as individual texts. When other people start group texts with me in them causes me to receive the texts as individual texts (not a group text; they come in as a 1-on-1 conversation). I spent hours with t-mobile and tried everything like resetting network, deleting old threads and starting new text messages, turning on/off iMessage/sms/mms, restarting phone, etc. Nothing worked. Then got passed to a couple folks at apple support who basically asked me to go back to the previous version of iOS using a computer. I dont have a computer. I’m not buying cable adapters to connect to a computer if I had one. I have an iPad but turns out i need iTunes on a computer. I’m regretting switching to iPhone. Please Help!
Background: Switched from pixel to iPhone 15 plus. Took 3 hours at the store to set it up. It kept crashing or getting stuck at various points. Not sure if that crashing during install caused group texts issue. I’m just frustrated at how just basic functions like texting requires me to spend hours trying to make iPhone work again.