Verizon Wireless will soon begin charging a $20 activation fee for new customers who sign up for one of its contract-free device payment plans. The fee goes into effect Nov. 15. Previously, Verizon waived activation fees for customers who purchased devices via monthly installment plans. Verizon already charges a $40 activation fee to customers signing contracts. Though Verizon no longer offers contracts, it will still charge that $40 fee to grandfathered contract customers who add a new line of service. Verizon said the new $20 fee covers costs associated with adding a line, such as pairing the customer's phone number with their SIM card. Part of the initial appeal of monthly installment plans was the "$0 down" promise from carriers. Verizon's new fee effectively reneges on that policy. AT&T's installment plan customers now pay a $15 fee, too, when adding a new line. Sprint charges $36 for all new lines of service, and T-Mobile charges $15 for its SIM starter kit.