I just recently got the iPhone 6 and I was able to text everybody with no problem and the first problem that occurred was when my friend who was a Samsung s4 couldn't receive my texts but I could receive his; keep in mind I have both regular text messaging and iMessage and I do make sure to hold on the text and click send as text message. I just don't understand why I receive his texts but he can't get mine, I even restarted my phone completely and it didn't solve anything. I've been trying to call att and the Apple store but their automatic system is too long to get past so I'll have to go to the store in a few days, but I just wanted some thoughts about what possibly could be happening?
Read more: Can't text certain people with iPhone 6?