Regarding the email issue, I have had this issue with my email only. What email service do you use? If you use an email service from a cable provider (I use Shaw in Canada), the wireless carrier may block the SMTP server when you are not on WiFi. Also, the cable provider may have a different POP server when not using WiFi. I encountered this issue with email. This email issue should not happen if you use a clould-based email system like Gmail or Hotmail.