I need check my charger is original or duplicate

If this refurbished iPhone is not working properly, only having it a few days, I suggest that you contact FlipKart about what your options are for resolving this charging issue.

nallapusala Said:

"I need check my charger is original or duplicate: I bought refurbished Iphone 7 in flipkart in couple of days back, it is not charging up even after change the power socket"

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Verifying a Charing Block:

If there is no Serial Number on it, you can't check it. Go Here: Identify Counterfeit or Uncertified Lightning Connector Accessories - Apple Support. The ultimate solution would be to get a charger from Apple, and none other.

For Apple devices, you can enter the serial number here: Check Your Service and Support Coverage - Apple Support