From where I can replace the battery

kushal283 Said:

"From where I can replace the battery: location for battery change"

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Getting a New Battery:

Take it to Apple, an AASP(Apple Authorized Service Provider), or your local retailer.

A. Contacting Apple:

• Contact Us - Choose Locations
• Proceed from there as Necessary

Or...

B. Contact an AASP: 

1. Go Here: Find Locations - Apple Authorized Reseller
2. Click: Service & Support
3. Enter: your location information
4. See: if there is an AASP nearby
5. Contact: an AASP that shows up, and find out more about the services that they offer to fix the iPhone

Or...

C. Contact a Retailer:

Contact your local retailer, asking them if they replace batteries.