Q: can i find my iphones last known location before it disappeared?

No.

No, you can only find its current position if Find My Phone is turned on in Settings > iCloud, the iPhone is powered up and connected to the internet.

I want to find my iphone

You can enable to send last location to Appe when the battery is critically low.

if you have aleady enabled it, You might have chance to find it.

andalecia wrote:

 

I want to find my iphone

Did you enable Find my iPhone BEFORE you lost it? If you did, log in to https://icloud.com/find using the Apple ID that you used to enable Find my iPhone. It should show on a map if it is powered on and connected to a network.