I recently purchased a Galaxy S5 from a friend who had the Sprint carrier

[robtappia]

My Galaxy S5 was purchased used it has a Sprint carrier however I took my phone to bring your own phone to Straight Talk how do I remove Sprint from my phone when I turn it on Sprint comes on it also has Sprint ID and Sprint Hub and Sprint voicemail that I cannot remove how do I do this

 

[B. Diddy]

Welcome to Android Central! Review Sprint's unlock policy, and contact Sprint directly about it. https://www.sprint.com/en/legal/legal-regulatory-and-consumer-resources?ECID=vanity:legal