NEW YORK — Verizon Wireless, the country’s largest cellphone company, said Thursday that it will start charging $2 for every payment subscribers make over the phone or online with their credit cards.

The company said this “convenience fee” will be introduced Jan. 15.

The fee won’t apply to electronic check payments or to automatic credit card payments set up through Verizon’s AutoPay system. Paying by credit card in a Verizon store will also be free, as will mailing a check.

Other carriers have tried to get subscribers to move to automatic payments through other means. AT&T offers a $10 gift card for those who set up AutoPay. Sprint Nextel charges subscribers who have caps on the fees they can rack up each month.

Those people are charged $5 monthly unless they set up automatic payments.