Hi There,
Thanks for reaching out to us with this concern. My name is Augie and I'm here to help.
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Based on that model number (A1387 / EMC 2430 ), you actually own an iPhone 4s, not an iPhone 4. With that in mind, the batteries for the 4s and for the 4 are different, and they’re not cross-compatible.
With this in mind, we’ll be more than happy to set you up for a return and refund , and help you in ordering the correct battery. To do so, please send us an email with your order number to support@ifixit.com, and link this conversation.
Thanks again, and looking forward to helping you get this resolved soon.
