Sprint and Verizon Wireless will both offer iPhone 4S handsets that will be GSM-unlocked, a new report states. Macworld on Tuesday confirmed that iPhone 4S units sold by Sprint will be GSM-unlocked out of the box, while handsets sold by Verizon Wireless will come locked, but a user can call Verizon asking for an “international unlock” and the carrier will oblige provided the user’s account has been in good standing for 60 days. Customers who plan to roam internationally or use an unlocked iPhone 4S in the U.S. should note that the handset requires a micro-SIM rather than a standard SIM card.

UPDATE: A Sprint spokesperson told Ars Technica that it will not, in fact, be selling GSM-unlocked iPhones.

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Zach Epstein has worked in and around ICT for more than a decade, first in marketing and business development with two private telcos, then as a writer and editor covering business news, consumer electronics and telecommunications. Zach’s work has been quoted by countless top news publications. He was also recently named one of the world's top-10 “power mobile influencers” by Forbes, as well as one of Inc. Magazine's top-30 Internet of Things experts.