Announced in March 2015 and released April 10, 2015, the Galaxy S6 Edge is the curved-screen version of Samsung's newest flagship smartphone.

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I had an HTC Desire 626 and now I got an AT&T Samsung Galaxy s6 edge. The htc was with virgin mobile and the galaxy is with at&t. But my galaxy is now an unlocked phone so I wanted to use the old sim card from my htc. And whenever I put it in I can't get service and it says that my sim card isn't valid or something and tells me to restart my device to try and get it to connect to service and if the problem keeps persisting to call the support line. I called customer service but they told me they couldn't help me.

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The AT&T Galaxy S6 Edge is a GSM phone. When you unlocked your S6 Edge, you technically only unlocked it for use with GSM carriers, such as AT&T and Tmobile. Virgin Mobile is a CDMA company. They utilize Verizon and Sprint towers. Your Galaxy does not pick up service with the Virgin Mobile SIM card because it does not have the hardware to pick up CDMA frequencies.

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