Carrier What do I do with a "Master Subsidy Lock" number?

[kirsch]

I have terrible coverage with Sprint with both our handsets. The iPhone 4S is now out of contract so I can finally drop them without paying ransom *cough* Early Termination Fee (ETF).

I asked Sprint to unlock it so I can take it with me to another carrier. It's fully paid for after all, I own it, right?

So they gave me a Master Subsidy Lock (MSL) code. Problem is that nobody at AT&T nor T-Mobile knows what to do with that. I can't find any information online. What do I do with this code? How do I apply it? Are they just pulling my leg?

Any information is appreciated. If this works, then I'll pay the ETF for the iPhone 5 as well.

 

[iSaxon]

I don't think MSL codes can unlock iPhones

...
There is no msl code with iPhones.
They are unlocked different.

 

[brand]

What do I do with this code? How do I apply it?

Since you got the code from Sprint why wouldn't you have just asked them when they gave you the code or called them back and asked since they are the ones that gave you the code.

 

[jeffm5690]

MSL? I don't believe that is iPhone compatible... Call Sprint.

 

[Applejuiced]

Where did they say you're supposed to stick the unlock code?

 

[jdecosta]

Sprint phone will not work on AT&T or Tmobile