how to track my lost iphone without tracking app or/and “find my iphone app”?

hi there, i was wondering if i can find my iphone without any find my iphone app or something like that, if i loose mine?
i thought about any wep app where i can set in my serial number of my phone or this EIM numer or something and it tells me when my phone was connected to internet/wlan or something like that
i dont know if something like i told exist the right way :laugh: would be nice to hear any solutions
thx
Answer #1
nope, u don’t. The only thing an IMEI can be used for without a tracking app is either having the provider lock it down (deny network access) or the cops to locate it using cellphone antenna’s.
Answer #2
Just have your phone locked.
If you then find it you can unlock again.
There wouldn’t be sites to do what you want.
And if there were I’d assume you’d have to register phone anyway.