Verizon had telegraphed the move toward shared plans, but had not revealed the details or pricing.
Verizon Wireless has 93 million subscribers on its plans. It's a joint venture of New York-based phone company Verizon Communications Inc. and Vodafone Group PLC, a British cellphone company with wide international interests.
Verizon shares rose 2 cents to $42.58 in morning trading. The shares are close to a four-year high of $42.95.