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I recently got a locked Sprint Galaxy s4 SPH-L720. I bought it to unlock it and then use it with a CDMA carrier in India.

following an you-tube video (used website too), I was able to unlock the phone.
youtube(dot)com/watch?v=lawcT1qqnLA[/url]
galaxys4root(dot)com/galaxy-s4-tutorials/how-to-unlock-sim-on-sprint-galaxy-s4/[/url]

After following the steps, I was able to unlock the phone for GSM.

But as soon as I put a CDMA sim card...It displays "Invalid Sim"

Can someone please suggest something to make it work for CDMA too. I changed the network settings from GSM to CDMA but that didn't help too.

Any suggestions are welcome!




Thanks
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