I completely understand. Let me guide you through the process. To access your phone's settings, you'll need to locate the gear icon on your home screen. Once you tapve opened the settings menu, you should see several options listed under "Phone." Can "Call Settings" and then "Incoming Calls." From there, you can adjust your ringtone, voicemail, and other call-related settings.
Okay, I think I see. But what about text messaging?