I have a custom sound I am trying to make into my text tone. I went through the motions, converted to .m4r and imported it to my phone. I showed up in the "Ring Tones" section of the sounds menu in the phone. I selected it for the text tone & it plays when I click on it to preview but when I get an actual text or imessage it only vibrates and doesnt make the sound. Any ideas what could be keeping it from working? I have an iphone 6 running iOS 8.1. Also the tone is 1 second long... well under the 30 second time limit on text tones. Thanks in advance!