I would guess a copy of the death certificate faxed or postal mailed to verizon wireless legal department would cancel out the line. If you have no contract then a simple call to customer service or a trip to a verizon wireless store can terminate that line.
This is true.
For Verizon's many shortcomings they do make this process easy.
About two years ago my mother in law passed away. She had a line of service on my account with my wife. one call to *611 a few days after her passing put everything in motion. No proof or death certificate required or requested.
Her line of service dropped at the end of the billing cycle.
I'm sorry to hear about your wife njmdad. I know this can be a hard time and I'm here to help. I just sent you a private message. Please send me more details so that I can assist.
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