I have had ALOT of sanyos...
Sanyo comes with an Outgoing list, Incoming, Missed, AND recent call list.. ( yes i know 4, odd but its good to have recent call list incanse u delete a number out of the other 3, its still there... ALSO, the recent call list is good cause its ALL 3 lists combined into one and yes it is deleteable.. it holds up to 48 numbers, maybe more.. mine got up to 48 recent calls once ).. just tellin ya what i like about sanyo! hehe... a little off topic, but its ok.. lol.. sorry alrite back to the subject at hand.........
Okay..click the menu button ( in the middle )
messaging
texts
inbox ( or outbox, which ever u want to delete )
options ( right side top button )
then ERASE * to erase that ONE message.. if u want to delete ALL, scroll down to ERASE ALL and hit ok* and there ya go