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What makes Samsung Galaxy Core Duos unique?

Here are 4 unique features & highlights of Samsung Galaxy Core Duos :
1 The thinnest phone priced around Rs. 14,000 with 5 MP camera
2 The #2 phone priced around Rs. 14,000 with 5 MP camera
3 The #3 most popular1 phone priced around Rs. 14,000 with 5 MP camera
4 The #3 most high-end Samsung phone with 1 GB RAM
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