This kind of a last ditch effort before I switch back to Verizon (where I originally came from 3 weeks ago). I switched over to straight talk for a cheaper bill but nothing is working right. I've been on the phone with straight talk for more than 5 hours doing all the diagnostic steps possible. They sent me a new Sim and it's still doing the same problem. I have the right app settings, HD calling us on, reset me network, and factory reset my phone. I tried downloading other mms apps to see if I could send or recieve pictures, and still no luck. My phone is Samsung, galaxy s20 +. I was w Verizon for a year before I switched over and never had this problem so I know it has to do with my transferring over. Could really use an outside opinion instead of an over the phone tech