Anyone have experience with SIM800? Ringtones? Keytones?

How does one change the ring tone on the SIM800? I can get the volume to change, but can’t figure out how to select different ring tones. Are there different ones? I thought there was.

Also, making the key tones when dialing keystrokes. Can’t get that to work either. Can’t do the menu choices on calling networks without them. Anyone have any luck with these?


-jim lee