Thanks for reaching out to us. The HTC One from another provider would not be able to be activated on the Sprint network, however you can check out our Buyback program or utilize the resellers mentioned above to take it off your hands and pick up a device on our network. Please let me know if I can be of further assistance. Thanks!
Sprint Social Care Team
Sprint S.M.A.R.T Agents Sprint S.M.A.R.T Agent are here to help Monday through Friday 6:00 AM CT - 6:00 PM CT. If you need to speak to an agent outside of these hours, please visit Sprint Chat