Region wise lock in Samsung S4

Hi,
One of my friends purchased a S4 from Middle East to use in India. He never used the phone until it reached here. After putting an Indian sim , it is asking for a unlock number [The sim is not having any PIN number. It was working fine in another phone.].
I came to know that Samsung started to region lock all their devices.

Now the question is , anybody has the same issue ?
Will rooting clear the lock if we use a custom rom or a radio ?
Any tool to unlock this ?

Google was not helping much...
 
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