[iMore Question]

trying to locate serial number to check apple care cant find it phone wont power on at all

[Tartarus]

Check the box.
It's on the back.

[Rob Phillips]

Welcome to iMore! It depends on what device you're referring to. You can find more info here: https://support.apple.com/en-us/HT204073

[Tech198]

The only thing that would really be helpful and the only place Apple doesn't provide it is on the back of the iPhone itself .. Always wondered why that is?

U can derive from the MEID, or IMEI instead,, but Apple seems to use that only iin the places u cannot get at the serial number easily (etc.. in the SIM tray for example , but u need to get it open first) if u don't have anything pointy with you.