Recently my iPhone 5s has not been able to send picture texts to non-iPhone users. I also have noticed that I sometimes do not receive texts when included on group texts with iPhone and non-iPhone users. I updated my software to iOS 8.1.2, I checked that my "Send and Receive" option is turned on, I checked that my cellular data was on, I reset my network settings, I cleared my website history and data and deleted old texts. I am still having the same issues and am not sure what else to do.