I went into my Settings-Sound-Default Notifications and changed my text tones to something different. Every time I receive a text it reverts back to a default sound. I have ringtones and sounds saved to my SD card. The only time I hear my own sounds is when I receive a Facebook message. My phone ringtone also reverts to a default one and not the one I chose. My Note is bone stock. No mods or anything. Any suggestions?