In order to keep your plan , you have to stay on it. Prepaid, postpaid, doesn't matter who. Or, some providers will let you pay a fee for the months you're not using the phone, whatever that amount is. You could always try to lower the cost of your m...
That is the default and direct line to your voicemail, usually correlating to the area code of the number you are subscribed with. In my case, living in Alberta, it shows me a 587 area code.
