How can I find my iPhone?

How can I find my iPhone?

Added (1). I lost the iPhone somewhere in my house. I don't know my apple I'd. Apple reset pages are only letting me verify by phone. I have find my iPhone on in it.

Tell for Apple

https://ebay.to/2lGIOB6 https://ebay.to/2KqlS3x

My emoji was there now how do reinistall them