The source states that the reason for the move was for Credo to accommodate its new customer activations except for the ones who plan to bring in their own devices. Although they have moved to Verizon, the MVNO is said to still make use of Sprint's network to give way for BYOD customers; especially since only 10 percent of new customers decide to do so. Apart from the 10 percent, the rest of Credo's new customers purchase phones from them directly. The source has attributed these figures from the 100,000 customers of Credo.
While there hasn't been an official announcement from Credo, the report seems to be reflected on their website. Before this weekend, Credo says that its wireless network services are "provided on the Nationwide Sprint Network." A visit to the website shows that this statement has been changed and that the MVNO now offers "nationwide 4G LTE coverage. Because it matters." There is no direct mention of who its new host network is. But judging on the latest network tagline of Verizon: "better matters", this is a close hint.
As of this writing, it still isn't verified whether or not Credo has decided to move away from Sprint. If it were, however, it certainly isn't the first MVNO to make this decision. Earlier this year, Republic Wireless (another Sprint MVNO) signed an agreement with a carrier that offered GSM wireless network. Back in 2013, PTel Mobile also switched to T-Mobile after dropping Sprint. It's important to note tough that PTel has already shut down this year).
We'll have to stay tuned for an official statement from Credo Mobile. Hopefully, they are only making these changes for the betterment of its customers, especially if this is a change that will affect the way they conduct business.
Source: Fierce Wireless