Sprint refused to unlock an owned cell phone when other service providers will.
Sprint refused to unlock an owned cell phone when other service providers, such as AT&T, T-Moble, etc. will.
DO NOT SUBSCRIBE TO, OR PURCHASE A CELL PHONE, FROM SPRINT.
If you want to change service providers, from Sprint, to AT&T, T-Mobile, etc., Sprint will NEVER unlock your phone making your hundreds of dollars investment totally useless.
Even all of the online unlocking services, that you can pay for, can't unlock a Sprint locked phone.
The other service providers will unlock your phone without issue.