The IMEI is written on the back of the handset near the bottom. It will actually say IMEI next to it and it will be a 15 digit number usually starting with a 0 for an iPhone 5.
The ESN is the number written in very small writing on the SIM card that's in the phone. You can remove the SIM by inserting either the SIM removal tool or a bent paperclip into the tiny hole on the right side of the phone.
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The ESN is not part of the phone and can be changed by putting in another SIM. The IMEI is part of the handset can cannot be changed. Whilst written onto the handset, it is hardwired in, you'd need to replace pretty much the entire device to change this (it's impossible).
Hi Rindra,
The IMEI is written on the back of the handset near the bottom. It will actually say IMEI next to it and it will be a 15 digit number usually starting with a 0 for an iPhone 5.
The ESN is the number written in very small writing on the SIM card that's in the phone. You can remove the SIM by inserting either the SIM removal tool or a bent paperclip into the tiny hole on the right side of the phone.
Regards,
Anthony