Trying to carrier-unlock this phone; I think Sprint screwed me up.
I've been fighting with Sprint on this for nearly a week and I'm no closer to a fix than I was when I started.
Have a Sprint-branded Galaxy S5, model SM-G900P. It is carrier-locked. I would like it to not be carrier-locked. Apparently it is not, unfortunately, a simple matter of having Sprint unlock it through a provisioning server. I was given an MSL (Master Subsidy Lock) code and told that I could unlock the phone that way. I managed to get into the appropriate place to enter the code and was greeted with a menu of about a dozen or so options. Of course, there's no obvious "unlock carrier" option there. Google failed me.
I went to the Sprint store and spent three hours (yes, really) working with them trying to figure this out. They were unable to help me. They DID, however, make two changes to the phone through that MSL system and they (and I) are unable to change it back. One change was the removal of a username; there was previously a sprint.com email address there ("firstname.lastname@example.org" but I don't remember what the two characters for the ## were) and Sprint erased it. I can change the username though I don't know if I need to, and even if I needed to I no longer know what the previous username was.
The other change was turning off "System Connection Provider". It was previously on; the person at the Sprint store turned it off. Bad thing is, there's no apparent way to turn it back on again. When they turned it off the "On" button got grayed out.
I just want this phone to be functional and carrier unlocked. Any help would be appreciated.
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