Samsung blocking texts
I habe a group text set up between three people, four including myself. I have an iPhone and two of the other three phones are also iPhones. The third phone is a Samsung. When I send a text, it will go to one of the iPhone's (the same person each time) and to the Samsung user. None of the messages show up on the second iphone. What is it with the Samsung that is blocking the message from getting to the second iphone. Any help would be appreciated.
iPhone 5s, iOS 8.1.2