I just purchased the phone Thursday and it was working very well. Yesterday, I started getting an error message everytime it checks for yahoo email. The error message is "Unable to send mail. The account setting is incorrect". I am receiving and can send messages, but every 15 minutes it beeps 6 times to inform me of the message - very irritating. I took it to the Verizon store and no one there knew what to do. I tried to delete the account but it won't let me.